PRIMARY 3 THIRD TERM LESSON NOTE COMPUTER SCIENCE STUDIES ICT

WEEK 2&3

Topic: Components of the computer system unit 1&11

Subbtitle: Disk Drive

Learning Objectives:At the end of this this lesson,pupils should be able to:

1. Say the meaning of disk drive

2. Identify the different types of disk drive

3. Locate the position of floppy disk drive in the computer
4. State the meaning of CD and ROM

Resources and materials:

Scheme of work

Online information

Instructional material:

Textbook

Chalkboard

Pictures/charts of disk drive and the types of disk drive

Building Background/connection to prior knowledge: pupils are familiar with the topic in their previous classes.

CONTENT

MEANING OF DISK DRIVE

A drive is a location (medium) that is capable of storing and reading information that is not easily removed, like a disk or disc

A disk drive is a device that reads and/or writes data to a disk. The most common type of disk drive is a hard drive (or “hard disk drive”), but several other types of disk drives exist as well. Some examples include removable storage devices, floppy drives, and optical drives, which read optical media, such as CDs and DVDs.

Types of disk drive

There are different types of disk drive

HARD DRIVES

These are also called ‘fixed disks’ in ancient computerese because the storage media is mounted within the computer and not intended to be removed.

FLOPPY DRIVES

Named for the media disks that could be pulled out and that would ‘flop’ when carried. These disks are designed to allow users to store data to a disk, remove it and carry the data elsewhere. These typically come in one of two formats in the United States: 3.5″ @1.44Mbytes and 5.25″ at 1.22 Mbytes. There are a few proprietary types as well, such as Zip drives, DAT tapes etc.

CD-ROM

Compact Disk Read Only Memory or CD-ROMs are shiny circular pieces of plastic with a hole in the middle. These look like audio compact disks and computer software and data are stored on them. They are read using a powerful (red) light-emitting diode (LED) that is sometimes called a ‘laser’ and thus the name ‘laser disk’. Compact Disk media is made of pressed layers of plastic and can store about 640 MB of data.

DVD-ROM

Digital Video Disks were first used to store movies for playback on compact players.

Blu-Ray

The latest development in data storage and movie disks is Blu-Ray, so called because it uses a blue LED (sometimes called a laser, which is actually something entirely different) to read/write from the disk.

REMOVEABLE DRIVES

These are drives where the drive itself can be removed or ported elsewhere. The media is usually not pulled out. Removable hard drives are a good example of these.

Position of the floppy disk in the computer

A floppy disk, like a cassette tape, is made from a thin piece of plastic coated with a magnetic material on both sides. However, it is shaped like a disk rather than a long thin ribbon. The tracks are arranged in concentric rings so that the software can jump from “file 1” to “file 19” without having to fast forward through files 2-18. The diskette spins like a record and the heads move to the correct track, providing what is known as direct access storage

Meaning of CD AND ROM

Stands for “Compact Disc Read-Only Memory.” A CD-ROM is a CD that can be read by a computer with an optical drive. The “ROM” part of the term means the data on the disc is “read-only,” or cannot be altered or erased. Because of this feature and their large capacity, CD-ROMs are a great media format for retail software.

Good morning, class! Today we will be learning about disk drives and their different types. Let’s get started!

 

1. Meaning of Disk Drive:

A disk drive is a device in a computer that is used for reading from and writing to disks. It is responsible for storing and retrieving data on various types of disks.

 

2. Different types of Disk Drives:

There are several types of disk drives commonly used in computers. Let’s explore them:

 

a) Floppy Disk Drive (FDD):

– Floppy disk drives are one of the oldest types of disk drives.

– They use floppy disks, which are small, flat, and flexible magnetic storage media.

– Floppy disks are usually 3.5 inches or 5.25 inches in size.

– They were widely used in the past but have become less common nowadays.

 

b) Hard Disk Drive (HDD):

– Hard disk drives are the primary storage devices in most computers.

– They use rigid magnetic disks to store and retrieve data.

– HDDs have large storage capacities and are commonly found in desktop computers and laptops.

 

c) Solid State Drive (SSD):

– Solid state drives are a newer type of disk drive.

– They use flash memory technology to store data.

– SSDs are faster and more durable than traditional hard disk drives.

– They are commonly found in modern laptops and desktop computers.

 

d) CD/DVD Drive:

– CD (Compact Disc) and DVD (Digital Versatile Disc) drives are used to read and write data on optical discs.

– CDs and DVDs are circular discs that store data in digital format.

– CD drives can read CDs, while DVD drives can read both CDs and DVDs.

– They are commonly used for installing software, playing music, watching movies, and backing up data.

 

3. Locating the Floppy Disk Drive:

In older computers, the floppy disk drive was usually positioned in the front of the computer’s casing, below the main unit or above the main unit. However, it’s important to note that floppy disk drives are becoming less common in modern computers.

 

4. Meaning of CD and ROM:

a) CD:

– CD stands for Compact Disc.

– It is a type of optical disc that can store data, audio, or video.

– CDs are read by CD drives and can be played in CD players or computers.

– They are commonly used for storing music albums, software, and data backups.

 

b) ROM:

– ROM stands for Read-Only Memory.

– It is a type of memory that stores data permanently and cannot be changed or erased.

– ROM is commonly used in devices like game consoles, smartphones, and computers to store firmware or software that should not be altered.

 

I hope this explanation helps you understand the concept of disk drives, their types, and the meaning of CD and ROM. If you have any questions, please feel free to ask!

Strategies& Activities:

Step :Teacher revises the previous topic.

Step 2:Teacher introduces the new topic.

Step 3:Teacher explains the new topic.

Step 4: Teacher welcomes pupils questions.

Step 5: Teacher evaluates the pupils.

Assessment & Evaluation:

1. Say the meaning of disk drive
2. Identify the different types of disk drive
3. Locate the position of floppy disk drive in the computer
4. State the meaning of CD and ROM

WRAP UP(CONCLUSION) Teacher goes over the topic once again for better understanding.

Assignment:

1. What is dick drive?
2. Identify 3 types of disk Dr
3. What is the full meaning of CD and ROM

[mediator_tech]

 

1. The disk drive is a device used for ____________ and ____________ to disks.

a) reading, writing

b) storing, retrieving

c) copying, pasting

 

2. The different types of disk drives include floppy disk drives, hard disk drives, solid state drives, and ____________.

a) CD drives

b) USB drives

c) printer drives

 

3. The position of the floppy disk drive in the computer is usually located ____________.

a) at the top of the computer

b) in the middle of the computer

c) at the front or below the main unit of the computer

 

4. CD stands for ____________.

a) Compact Drive

b) Computer Disc

c) Compact Disc

 

5. ROM stands for ____________.

a) Read-Only Memory

b) Random-Access Memory

c) Real-Time Operating Memory

 

6. The floppy disk drive uses ____________ disks.

a) flexible

b) rigid

c) circular

 

7. Hard disk drives are the primary storage devices in ____________.

a) smartphones

b) televisions

c) most computers

 

8. Solid state drives are faster and more ____________ than traditional hard disk drives.

a) expensive

b) durable

c) heavy

 

9. CD drives can read ____________.

a) CDs

b) DVDs

c) both CDs and DVDs

 

10. DVDs can store more data compared to ____________.

a) floppy disks

b) hard disk drives

c) solid state drives

 

11. The position of the floppy disk drive in modern computers is becoming ____________.

a) more common

b) less common

c) bigger

 

12. CDs are commonly used for storing ____________.

a) music albums

b) software

c) both music albums and software

 

13. ROM is a type of memory that stores data ____________.

a) permanently

b) temporarily

c) randomly

 

14. Floppy disk drives were widely used in the ____________.

a) past

b) present

c) future

 

15. Solid state drives use ____________ technology to store data.

a) magnetic

b) flash memory

c) optical

 

[mediator_tech]

WEEK 4&5

Topic: Components of the computer system unit 1&11

Subtitle : Hard disk

Learning Objectives:At the end of this this lesson,pupils should be able to:

1. Identify the hard disk drive
2. Differentiate between the hard disk drive and floppy disk
3. State the use of hard drive

Resources and materials:

Scheme of work

Online information

Instructional material:

Textbook

Chalkboard

Pictures/charts of disk drive and the types of disk drive

Building Background/connection to prior knowledge: pupils are familiar with the topic in their previous classes.

CONTENT

HARD DISK

A hard disk drive (HDD) is a non-volatile computer storage device containing magnetic disks or platters rotating at high speeds. It is a secondary storage device used to store data permanently, random access memory (RAM) being the primary memory device.

DIFFERENCE BETWEEN FLOPPY DISK AND HARD DISK

1. A floppy disk is a circular piece of mylar or other plastic like material coated with iron oxide. The hard disk is a stack of few thin metal plates, usually coated, usually coated on both side with magnetized material.
2. Data is recorded in the form of magnetic dots on spots on tracks in floppy disk . Data is stored as magnetic spots on tracks that concentric circles on the surface of disks in Hard disk.
3. The flexible disk is housed in a plastic jacket I the floppy disk. The flexible disks is housed in a metal jacket in an hard disk.
4. Hard disk are often called a fixed disk.
5. Floppy disk holds less data that is 1.1.4 MB. Hard disks holds more data that is several GBs

USES OF HARD DRIVE

The hard disk is used to store the operating system and programs required to keep your computer running. Basically hard disk is a magnetic type storage media which, when required reads the specific portion of memory and provides it for processing. Its a kind of permanent storage for your work, you can’t store any data on the RAM as it erased each time you turn off the computer. And as per the memory hierarchy the more faster storage you need gets more pricier. So at the time of any program execution the data from the hard disk is loaded onto memory for execution and hard disk can can provide virtually more memory for storing various programs and data.

Also the media files get stored on the hard disk.

Harddisk, is used to store your information on a secondary storage.

1- hard disk save you data for a very long time

2- hard disk is not volatile

3- hard disk is very cheap comparing this to “RAM and Cache ”

 

Strategies& Activities:

Step :Teacher revises the previous topic.

Step 2:Teacher introduces the new topic.

Step 3:Teacher explains the new topic.

Step 4: Teacher welcomes pupils questions.

Step 5: Teacher evaluates the pupils.

Assessment & Evaluation:

1. Identify the hard disk drive
2. Differentiate between the hard disk drive and floppy disk
3. State the use of hard drive

WRAP UP(CONCLUSION) Teacher goes over the topic once again for better understanding.

Good morning, class! Today, we will be exploring the topic of hard disks and their uses. Let’s dive into it!

 

1. Definition of a Hard Disk:

– A hard disk drive (HDD) is a storage device used to store data permanently in a computer.

– It consists of magnetic disks or platters that rotate at high speeds.

– Hard disks are non-volatile, which means they can retain data even when the computer is turned off.

– They are considered secondary storage devices, with primary memory being the random access memory (RAM).

 

2. Difference Between Floppy Disk and Hard Disk:

Let’s compare floppy disks and hard disks to understand their differences.

 

– Floppy Disk:

– Floppy disks are circular pieces made of mylar or plastic coated with iron oxide.

– Data is recorded as magnetic dots on tracks in a floppy disk.

– They are housed in a plastic jacket and are flexible.

– Floppy disks hold a smaller amount of data, typically around 1.44 MB.

 

– Hard Disk:

– A hard disk is a stack of thin metal plates, coated on both sides with magnetized material.

– Data is stored as magnetic spots on concentric tracks on the surface of the disks.

– Hard disks are housed in a metal jacket and are not flexible.

– Hard disks hold a significantly larger amount of data, usually several gigabytes (GBs) or more.

 

3. Uses of a Hard Disk:

Hard disks have various important uses in a computer system. Let’s explore a few of them:

 

– Storage of Operating System and Programs:

– Hard disks are used to store the operating system (like Windows or macOS) and programs required for the computer to function properly.

– When you turn on your computer, the operating system is loaded from the hard disk into the computer’s memory (RAM) for execution.

 

– Permanent Storage:

– Hard disks provide permanent storage for your work and files.

– Unlike RAM, which loses data when the computer is turned off, the data stored on a hard disk remains intact even after powering off the computer.

 

– Storage of Media Files:

– Hard disks are commonly used to store media files like music, videos, and images.

– These files can take up a significant amount of storage space, and hard disks offer the capacity to store large collections of media.

 

– Secondary Storage:

– Hard disks serve as secondary storage, where you can store data that is not actively being used by the computer’s memory.

– This allows for easy access to data and programs whenever needed.

 

To summarize, hard disks are important storage devices that provide permanent storage for your computer’s operating system, programs, and data. They are non-volatile, cost-effective, and offer larger storage capacities compared to floppy disks. They play a vital role in keeping your computer running smoothly and storing your valuable information.

 

 

[mediator_tech]

 

1. A hard disk drive (HDD) is a non-volatile computer storage device that contains ____________ rotating at high speeds.
a) magnetic disks
b) optical disks
c) solid-state memory

2. A hard disk is a ____________ storage device used to store data permanently.
a) primary
b) secondary
c) temporary

3. The primary memory device in a computer is ____________.
a) hard disk drive
b) random access memory (RAM)
c) floppy disk

4. Data is recorded as magnetic dots on spots on tracks in a ____________.
a) floppy disk
b) hard disk
c) CD-ROM

5. The hard disk is composed of thin metal plates coated on ____________.
a) one side with magnetized material
b) both sides with magnetized material
c) plastic material

6. A floppy disk is housed in a ____________ jacket.
a) plastic
b) metal
c) paper

7. Hard disks are often referred to as ____________.
a) fixed disks
b) flexible disks
c) solid-state disks

8. A floppy disk holds ____________ data compared to a hard disk.
a) several GBs
b) 1.44 MB
c) unlimited

9. The hard disk is used to store the ____________ and programs required to keep a computer running.
a) operating system
b) keyboard
c) monitor

10. The hard disk provides ____________ storage for your work and files.
a) temporary
b) permanent
c) volatile

11. Data stored on a hard disk remains intact even when you ____________ the computer.
a) turn on
b) turn off
c) restart

12. The hard disk can provide ____________ memory for storing various programs and data.
a) primary
b) virtual
c) volatile

13. Media files such as music and videos are commonly stored on the ____________.
a) floppy disk
b) RAM
c) hard disk

14. The hard disk is used for ____________ storage in a computer system.
a) primary
b) secondary
c) temporary

15. Compared to RAM and cache memory, hard disks are relatively ____________.
a) slow
b) expensive
c) volatile

[mediator_tech]

 

WEEK 6

Topic: Components of the computer system unit 1&11

Subtitle : Disk Drive

Learning Objectives:At the end of this this lesson,pupils should be able to:

1. State the do’s in disk drive
2. List the don’ts in using disk drive.

Resources and materials:

Scheme of work

Online information

Instructional material:

Textbook

Chalkboard

Pictures/charts of disk drive and the types of disk drive

Building Background/connection to prior knowledge: pupils are familiar with the topic in their previous classes.

CONTENT

Good morning, class! Today, we will be discussing the advantages and disadvantages of hard drives. Let’s explore them in more detail.

 

Advantages of Hard Drives:

 

1. Large Capacity:

– Hard drives offer a large storage capacity, allowing you to store a significant amount of data such as documents, photos, videos, and applications.

– They come in various sizes, with modern hard drives offering terabytes (TB) of storage space.

 

2. Faster than Optical Disks like DVDs:

– Hard drives have faster read and write speeds compared to optical disks like DVDs.

– This means that data can be accessed and transferred more quickly, making tasks such as opening files or loading programs faster.

 

3. Persistent Storage:

– Data stored on a hard drive remains intact even when the computer is turned off.

– This persistent storage ensures that your data is always available for future use.

 

4. Easily Replaced and Upgraded:

– If a hard drive fails or if you need more storage space, it is relatively easy to replace or upgrade a hard drive.

– You can simply remove the old hard drive and install a new one without significant technical expertise.

 

Now, let’s move on to the disadvantages of hard drives:

 

1. Relies on Moving Parts:

– Hard drives rely on mechanical components such as spinning disks and moving read/write heads.

– These moving parts can be more susceptible to wear and tear over time, potentially leading to failures or data loss.

 

2. Disk Surface can be Damaged:

– Since hard drives have delicate spinning disks, the disk surface can be damaged if the drive is mishandled or dropped.

– Damage to the disk surface can result in the loss of stored data.

 

3. Heavy Power Consumption:

– Hard drives require a significant amount of power to operate.

– This can lead to increased energy consumption, which may be a concern in situations where power efficiency is important, such as in laptops or portable devices.

 

4. Noisy:

– Due to the mechanical nature of hard drives, they can produce noise while in operation.

– The spinning of the disks and movement of the read/write heads can result in audible sounds.

 

5. Slower Read and Write Speed than RAM:

– Although hard drives are faster than optical disks, they are slower compared to the primary memory device, random access memory (RAM).

– This means that accessing data from a hard drive or writing data to it can take longer compared to the immediate access and transfer speeds of RAM.

 

It’s important to note that despite these disadvantages, hard drives remain a popular and widely used storage option due to their large capacity and cost-effectiveness.

[mediator_tech]

I hope this explanation helps you understand the advantages and disadvantages of hard drives. If you have any questions, feel free to ask!

Hard disk drives Advantages

1. Large capacity
2. Faster than optical disks like DVD’S
3. Persistent storage
4. Easily replaced and upgraded

Disadvantages

1.Relies on moving parts

2.Disk surface can be damaged

3.Heavy power consumption

4.Noisy

5.Slower read and write speed than RAM

Strategies& Activities:

Step :Teacher revises the previous topic.

Step 2:Teacher introduces the new topic.

Step 3:Teacher explains the new topic.

Step 4: Teacher welcomes pupils questions.

Step 5: Teacher evaluates the pupils.

Assessment & Evaluation:

1. State the do’s in disk drive
2. List the don’ts in using disk drive.

WRAP UP(CONCLUSION) Teacher goes over the topic once again for better understanding.

[mediator_tech]

1. Hard disk drives (HDDs) have a ____________ storage capacity.
a) small
b) large
c) moderate

2. Hard disk drives are ____________ than optical disks like DVDs.
a) slower
b) faster
c) similar in speed

3. Data stored on a hard disk drive remains intact even when the computer is turned off due to its ____________.
a) persistent storage
b) volatile nature
c) limited capacity

4. If a hard disk drive fails or needs more storage space, it can be ____________ or ____________.
a) repaired, upgraded
b) replaced, upgraded
c) removed, downgraded

5. The disadvantage of a hard disk drive is that it relies on ____________.
a) solid-state memory
b) moving parts
c) optical drives

6. The ____________ of a hard disk drive can be damaged if mishandled or dropped.
a) RAM
b) disk surface
c) power supply

7. Hard disk drives consume ____________ power compared to other storage devices.
a) light
b) heavy
c) moderate

8. The operation of hard disk drives can be ____________ due to the movement of internal components.
a) quiet
b) noisy
c) silent

9. Hard disk drives have ____________ read and write speed compared to random access memory (RAM).
a) slower
b) faster
c) similar

10. The advantage of hard disk drives is their ____________.
a) limited capacity
b) large capacity
c) slow speed

11. Hard disk drives are faster than ____________.
a) solid-state drives
b) optical disks
c) external hard drives

12. Data stored on a hard disk drive can be accessed ____________.
a) randomly
b) temporarily
c) permanently

13. The disadvantage of hard disk drives is that they are susceptible to ____________.
a) data loss
b) file corruption
c) power surges

14. Hard disk drives are commonly used in ____________.
a) smartphones
b) televisions
c) desktop computers

15. Hard disk drives provide ____________ storage for various types of files.
a) volatile
b) temporary
c) persistent

[mediator_tech]

WEEK 7&8

Topic: Components of the computer system unit 1&11

Subtitle : Disk Drive

Learning Objectives:At the end of this this lesson,pupils should be able to:

1. Tell the meaning of storage device
2. Identify the general storage device
3. Identify computer storage device.

Resources and materials:

Scheme of work

Online information

Instructional material:

Textbook

Chalkboard

Pictures/charts of disk drive and the types of disk drive

Building Background/connection to prior knowledge: pupils are familiar with the topic in their previous classes.

CONTENT

Good morning, class! Today, we will be exploring different types of storage devices used in computers. Let’s learn more about them in list format:

1. Main Memory Storage Devices:
a) Random Access Memory (RAM):
– RAM is a type of main memory storage device.
– It stores data, programming languages, and applications software temporarily.
– RAM allows the computer to access and retrieve data quickly while it is powered on.
– However, the data stored in RAM is temporary and is lost when the computer is turned off.

b) Read Only Memory (ROM):
– ROM is another type of main memory storage device.
– It stores data and system software permanently.
– The data stored in ROM remains in the computer at all times, even when it is powered off.
– ROM holds information that is essential for the computer to start up and perform basic functions.

2. Backing Storage Devices:
Backing storage devices provide permanent storage for large amounts of data and programs. Some examples include:

a) Diskettes:
– Diskettes are small, portable storage devices that can hold large amounts of data and information.
– They are often used to transfer data between computers or store files temporarily.

b) Hard Disk:
– The hard disk is a primary backing storage device.
– It stores the largest amount of data and information in a computer.
– It is the fastest and easiest way to store and retrieve data from a computer system.

c) Compact Disk (CD-ROM):
– CDs are shiny, plastic materials that store large amounts of data and information.
– CD-ROMs contain much more data and information compared to diskettes.
– They are commonly used for storing music, drawings, video films, games, and educational content.

d) Magnetic Tape:
– Magnetic tapes are backing storage devices used to store large amounts of data and information.
– They provide a slower access speed but are useful for long-term storage and backups.

e) DVD ROM:
– DVDs are similar to CDs but can store larger amounts of information.
– They are used for storing movies, software applications, and other multimedia content.

f) Flash Disk:
– Flash disks, also known as USB drives or flash drives, are highly portable storage devices.
– They can store a larger quantity of data compared to diskettes.
– Flash disks transfer data to and from the computer at a high speed.

These storage devices allow us to store and retrieve data and information in different ways, depending on our needs. It’s important to understand their capabilities and choose the appropriate storage device for our requirements.

[mediator_tech]

 

In summary

Storage devices are parts of the computer system in which we store information. The two kinds of storage devices are the
1. main memory storage devices, and
2. backing storage devices.
The main memory storage devices are
a) Random Access Memory (RAM)
RAM stores data, programming languages and applications software only. This storage is only for some time. It is called a temporary storage.

b) Read Only Memory (ROM)
ROM stores data and system software only.The storage remains in the computer always.It is called a permanent storage.Backing storage devices provide a permanent storage for large amounts of data and pro￾grams. These data and programs can be used whenever needed. Backing storage devicesare:
a) Diskettes
b) Hard disk
c) Compact disk (CD ROM)
d) Magnetic tape
e) DVD ROM
f) Flash memory
Diskettes
A diskette stores large amounts of data and information. When this information or data is needed, we quickly get it from the diskette.

Hard disk
The hard disk stores the largest amount of data and information. It is also the fastest and easiest way of storing and getting out stored data and information.
Compact disk (CD-ROM)
Compact disks are shining, plastic materials that store large amounts of data and information.
The data and information stored in a CD-ROM are much larger than that stored in a diskette.

CD-ROM

are now used for storing music, drawings and video films of very large amounts. They are also used for storing games and educational instructions.
DVD ROM
DVD means digital versatile disk. A DVD looks like a CD and it can store larger amounts of information.
Magnetic tape
The magnetic tape is also a backing storage device which stores large amounts of data and information. When needed, we get the data and information stored in a magnetic tape slowly.

Flash disk
The flash disk is very small and highly portable. stores larger quantity of data when compared to diskettes. It also transfers the data stored in it to the computer at a very high speed.

 

Strategies& Activities:

Step :Teacher revises the previous topic.

Step 2:Teacher introduces the new topic.

Step 3:Teacher explains the new topic.

Step 4: Teacher welcomes pupils questions.

Step 5: Teacher evaluates the pupils.

Assessment & Evaluation:

Tell the meaning of storage device

Identify the general storage device

Identify computer storage device.

WRAP UP(CONCLUSION) Teacher goes over the topic once again for better understanding.

Activity
Draw all the backing storage devices on a piece of cardboard and label them.

[mediator_tech]

1. Storage devices are parts of the computer system used to ____________.
a) display information
b) store information
c) process information

2. The two kinds of storage devices are ____________ and ____________.
a) main memory, backing storage
b) CPU, RAM
c) software, hardware

3. RAM stands for ____________.
a) Random Access Memory
b) Read Only Memory
c) Randomized Algorithm Mechanism

4. RAM stores ____________.
a) data, programming languages, and applications software
b) system software only
c) data and system software

5. ROM stands for ____________.
a) Random Access Memory
b) Read Only Memory
c) Randomized Operation Mechanism

6. ROM stores ____________.
a) data and programming languages
b) data and system software
c) data and temporary storage

7. Backing storage devices provide ____________ storage for large amounts of data and programs.
a) temporary
b) permanent
c) volatile

8. Diskettes are used to store ____________.
a) small amounts of data
b) large amounts of data and information
c) system software only

9. The hard disk stores the ____________ amount of data and information.
a) smallest
b) largest
c) moderate

10. CD-ROMs are used for storing ____________.
a) small files
b) music, drawings, and video films
c) temporary data

11. DVD-ROM stands for ____________.
a) Digital Video Disk
b) Digital Versatile Disk
c) Dynamic Video Drive

12. Magnetic tapes are used to store ____________.
a) small amounts of data
b) large amounts of data and information
c) system software only

13. Flash disks are highly portable and store ____________ data compared to diskettes.
a) smaller quantity
b) larger quantity
c) similar quantity

14. Flash disks transfer data to the computer at ____________.
a) a slow speed
b) a high speed
c) a moderate speed

15. The main memory storage devices are ____________ and ____________.
a) RAM, diskettes
b) ROM, DVD-ROM
c) RAM, ROM

[mediator_tech]

WEEK 9&10

WEEK 7&8

Topic: Components of the computer system unit 1&11

Subbtitle: Disk Drive

Learning Objectives:At the end of this this lesson,pupils should be able to:

• Identify floppy disk

• Describe floppy diskette

• Describe the size of floppy diskette

• Differentiate between 5th and 3rd diskette

• Explain grade 3¹/² of diskette

• Explain and demonstrate the care of diskette.

Resources and materials:

Scheme of work

Online information

Instructional material:

Textbook

Chalkboard

Pictures/charts of disk drive and the types of disk drive

Building Background/connection to prior knowledge: pupils are familiar with the topic in their previous classes.

CONTENT

FLOPPY DRIVES

Named for the media disks that could be pulled out and that would ‘flop’ when carried. These disks are designed to allow users to store data to a disk, remove it and carry the data elsewhere. These typically come in one of two formats in the United States: 3.5″ @1.44Mbytes and 5.25″ at 1.22 Mbytes. There are a few proprietary types as well, such as Zip drives, DAT tapes etc.

DISKETTE

diskette stores data and information typed into the computer. These data and information are used when needed. Diskettes are also used to take information from one computer to the other.
There are two types of diskettes:

1.3¹/²

 

5¹/⁴

 

The 3¹/² diskette is smaller than the 5¹/²diskette.Many more people like to use the 3 diskette than the 5 diskette. The 3 diskette also stores more information than the 5 diskette.
When we need to know what is stored in the diskette, we put it in the disk drive. The disk drive is on the system unit.
Since the two types of diskettes are of different sizes, there are also different disk drives for each type of diskette.
The 5¹/⁴ disk drive is for 5¹/⁴diskettes. It is at the upper part of the system unit.
The 3¹/² disk drive is for 3¹/² diskettes. It is at the lower part of the system unit. The 3¹/² disk drive is
smaller than the 5¹/⁴ disk drive.
In addition to the 5¹/⁴ and 3¹/² disk drives, there are also the CD ROM disk drive and the hard disk drives on the system unit. The CD ROM disk can be seen from outside while the hard disk drive is inside the system unit

CARE OF DISKETTE

1.Do not play with your diskette like a toy. This will damage the tape inside and this tape

2 Do not put your diskette near a hot object or surface.
3 Do not bend your diskette.
4 Keep all diskettes in a dry and safe place

Strategies& Activities:

Step :Teacher revises the previous topic.

Step 2:Teacher introduces the new topic.

Step 3 :Teacher explains the new topic.

Step 4 : Teacher welcomes pupils questions.

Step 5 : Teacher evaluates the pupils.

Assessment & Evaluation:

1.Identify floppy disk

2.Describe floppy diskette

3.Describe the size of floppy diskette

4.Differentiate between 5th and 3rd diskette

5.Explain grade 3¹/² of diskette

6.Explain and demonstrate the care of diskette.

WRAP UP(CONCLUSION) Teacher goes over the topic once again for better understanding.

[mediator_tech]

1. A floppy disk is a type of storage medium that was widely used in the past. It is a thin, flat, and flexible disk made of mylar or plastic, and it is coated with iron oxide. Floppy disks were used to store and transfer data between computers.

2. A floppy diskette is another term for a floppy disk. It refers to the same storage medium described earlier, which consists of a thin, flexible disk coated with iron oxide.

3. The size of a floppy diskette can vary. The most common sizes are 3.5 inches and 5.25 inches. The 3.5-inch floppy diskette became more popular in later years due to its smaller size and higher storage capacity.

4. The main difference between a 5th and 3rd diskette lies in their sizes and storage capacities. The 5th diskette refers to the 5.25-inch floppy disk, which was an earlier and larger version of the floppy diskette. The 3rd diskette refers to the 3.5-inch floppy disk, which is a smaller and more modern version with a higher storage capacity.

5. “Grade 3½” of a diskette does not have a standard meaning in the context of floppy disks. It seems to be a term that is not commonly used or recognized in relation to floppy diskettes.

6. Taking care of a floppy diskette is important to ensure its longevity and prevent data loss. Here are some tips for caring for a diskette:

– Keep the diskette away from magnets, as they can erase or corrupt the data on the disk.
– Protect the diskette from extreme temperatures, humidity, and direct sunlight.
– Handle the diskette with care, avoiding bending or applying pressure to it.
– Always store the diskette in a protective case when it is not in use.
– Avoid exposing the diskette to dust, dirt, or liquids.
– Insert and remove the diskette from the computer gently and carefully, following the instructions provided by the computer or disk drive.

Remember, floppy diskettes are not as commonly used today, and their delicate nature means they can be prone to damage or data loss over time. It is important to handle and care for them properly if you come across one.

If you have any further questions or need a demonstration, please let me know!

 

[mediator_tech]

Choose the correct option (a, b, or c) to complete each sentence:

1. A floppy disk is a type of ____________ used for storing and transferring data.
a) storage device
b) computer program
c) input device

2. A floppy diskette is a thin, flat, and ____________ disk used for data storage.
a) flexible
b) rigid
c) magnetic

3. The size of a floppy diskette can vary, but common sizes are ____________ and ____________.
a) 2.5 inches, 5.25 inches
b) 3.5 inches, 5.25 inches
c) 3 inches, 4 inches

4. The main difference between a 5th and 3rd diskette lies in their ____________ and ____________.
a) color, weight
b) size, storage capacity
c) manufacturer, durability

5. “Grade 3½” of a diskette does not have a standard meaning in the context of floppy disks. It seems to be a term that is not commonly used or recognized in relation to floppy diskettes.

6. Taking care of a diskette is important to ensure its ____________ and prevent data loss.
a) compatibility
b) longevity
c) performance

7. To protect a diskette, keep it away from ____________ as they can erase or corrupt the data.
a) sunlight
b) magnets
c) water

8. Extreme temperatures and ____________ can damage a diskette.
a) humidity
b) dust
c) static electricity

9. When handling a diskette, avoid ____________ or applying pressure to it.
a) bending
b) cleaning
c) inserting

10. It is recommended to store a diskette in a protective ____________ when it is not in use.
a) case
b) folder
c) envelope

11. Avoid exposing a diskette to ____________, as it can cause damage.
a) liquids
b) heat
c) air

12. When inserting a diskette into a computer, do it ____________ and carefully.
a) quickly
b) gently
c) forcefully

13. To remove a diskette from a computer, follow the ____________ provided by the computer or disk drive.
a) instructions
b) prompts
c) warnings

14. Diskettes are not as commonly used today due to the ____________ and limited storage capacity.
a) convenience
b) fragility
c) versatility

15. If a diskette is damaged or shows signs of data corruption, it is important to ____________.
a) clean it with a cloth
b) throw it away
c) make a backup copy if possible

 

 

[mediator_tech]

 

 

Primary 3 Third Term Examination DICTION

 

 

Primary 3 Examinations Third Term Computer / ICT

 

 

PRIMARY 4 THIRD TERM LESSON NOTE BASIC SCIENCE