Importance of Computer as a Tool for Processing Data Computer Studies JSS 1 Third Term Lesson Notes

Subject: Computer Studies
Class: JSS 1
Term: Third Term
Week: 2
Topic: Importance of Computer as a Tool for Processing Data

Sub-topic: Data Processing Techniques
Duration: 45 minutes

Behavioural Objectives:
By the end of the lesson, students should be able to:

• Define data processing and list its techniques.
• Explain the importance of computers in data processing.
• Identify the advantages and disadvantages of using computers for data processing.

Key Vocabulary Words:

• Data processing
• Batch Processing
• Real-Time Processing
• Time Sharing Processing
• Demand Processing
• Multi Processing
• Online Processing
• Speeds
• Accuracy
• Reliability
• Storage
• Memory Capability
• Exchange of information
• Efficiency
• Productivity
• Running cost
• Overall security

Learning Resources and Materials:

• Lagos State Scheme of Work for Computer Studies
• Textbooks on Computer Studies
• Whiteboard and markers
• Handouts on data processing techniques
• Computer system for demonstration

Building Background / Connection to Prior Knowledge:
Recap previous lessons on basic computer operations and introduce the concept of data processing. Relate it to everyday activities like making purchases online or using ATMs.

Embedded Core Skills:

• Critical thinking
• Problem-solving
• Communication

Content:

1. Introduction (5 mins):
   • Recap previous lessons on basic computer operations.
   • Introduction to Computer Processing and its Uses Computer Studies JSS 1 Third Term Lesson Notes
   • Introduce the topic of data processing and its importance in computer studies.
2. Explanation of Data Processing Techniques (15 mins):
   • Define batch processing, real-time processing, time sharing processing, demand processing, multi-processing, and online processing.
   • Provide examples and scenarios for each technique to aid understanding.
3. Importance of Computer in Data Processing (15 mins):
   • Discuss the advantages of using computers for data processing, emphasizing speed, accuracy, reliability, storage, memory capability, exchange of information, efficiency, productivity, lower running costs, and enhanced security.
   • Highlight the role of computers in modern-day activities like online shopping, banking, and communication.
4. Advantages and Disadvantages Discussion (5 mins):
   • Engage students in a discussion about the advantages and disadvantages of using computers for data processing.
   • Encourage students to share their thoughts and experiences.
5. Conclusion (5 mins):
   • Summarize key points discussed during the lesson.
   • Reinforce the importance of understanding data processing techniques and the role of computers in modern society.

IMPORTANCE OF COMPUTER AS A TOOL FOR PROCESSING DATA

DATA PROCESSING TECHNIQUES

There are different basic techniques of data processing namely:

Batch Processing

Real Time Processing

Time Sharing Processing

Demand Processing

Multi Processing

BATCH PROCESSING

It is a technique by which a number of jobs (data) are inputed into the computer system at the same time and the computer is made to execute those jobs, one after the other in sequence, at its own pace. This type of processing is suitable for accounting and business applications such as payroll accounts, invoicing, purchases, sales, ledger etc.

REAL TIME PROCESSING

In Real-Time Processing data are processed immediately, now. It is processed in rapid manner so that the results of the processing are available in time to influence the current activity or process being monitored or controlled. It is useful in transaction application where time is a critical factor e.g. airline reservations, banks etc.

TIME SHARING

In time-sharing processing, many users can work with the computer through terminals that are connected to remote distance. Here, the processor time is shared among variable number of users at essentially the same time, that is, it allows simultaneity and concurrency. Each user is given a fraction of the processor time, at the elapse of which the processor is switched over to another user.

DEMAND PROCESSING

This is a type of processing that is done only when it becomes necessary. The data have been stored in the computer memory, and would then be processed when it becomes necessary.

MULTI PROCESSING

In all the modes of computer operation discussed earlier only one processor is in the system. A multi processing system is one in which there are two or more processors that may be sharing the same main memory. This makes simultaneous execution of two or more programs possible.

ONLINE PROCESSING

This is a kind of processing whereby many terminals are directly connected to the CPU. It also involves a method of entering transaction and getting the output immediately. An online system is not always a real time response system, but real time system must have an online capability.

EVALUATION

1. Define data processing.
2. State four data processing techniques.

IMPORTANCE OF THE COMPUTER AS A TOOL FOR DATA PROCESSING

The following are advantages of using computers for data processing:

1. Speeds: Computer operations (the execution of an instruction such as the addition of two numbers) are done at the speed of light i.e. data is processed at a very fast rate when using the computer.
2. Accuracy: The computer is very accurate when processing data, it is not prone to errors like human beings.
3. Reliability: Computers can work for long periods of time performing repetitive tasks without complaining and a user can be sure that a directive given to the computer will be carried out.
4. Storage: Computer storage is far more efficient such that the quantity of data stored at any point can be accessed anytime it is required.
5. Memory Capability: Computer systems can store a huge amount of data or information and they have total and instant recall of these data.
6. Exchange of information: Computer has the ability to exchange information quickly and easily with computers and other devices.
7. Efficiency and productivity can be raised.
8. Running cost becomes lower in the long term.
9. Overall security can be raised due to less human intervention.

It may be noted however that, the use of computer for data processing has its own disadvantages: like, it is expensive, it requires trained personnel and it is costly to maintain.

GENERAL EVALUATION

1. Define data processing.
2. List any four processing techniques.
3. Give two advantages of using computer to process information.
4. Give two disadvantages of using computer for data processing.

READING ASSIGNMENT

Computer studies Stella Chiemeke Book 1 page 38.

Modern computer studies by Victoria Dinehin page 20

WEEKEND ASSIGNMENT

1. The …… is a technique by which a number of jobs (data) are input into the computer system at the same time and the computer is made to execute those jobs, one after the other in sequence. (a) batch processing (b) on-line processing (c) time sharing (d) demand processing
2. Computer operations are done at a speed of …… (a) moon (b) electronic (c) Light (d) sun
3. …….. is a kind of processing whereby many terminals are directly connected to the CPU. (a) online processing (b) demand processing (c) time sharing (d) batch processing
4. In time-sharing processing, many users can work with the computer through terminals that are connected to remote distance.(a) batch (b) time sharing (c) demand (d) online
5. A………….. system is one in which there are two or more processors that may be sharing the same main memory. (a) Multi processing (b) batch processing (c) online processing (d) real time processing

THEORY

1. Write short note on the following:

(a) Batch Processing

(b) Real-Time Processing

(c) Time Sharing

(d) Online Processing

1. State six importance of using computer as a data processing tool.

Importance of Computers in Data Processing

Data Processing Techniques:

1. Batch Processing 🔄:
   • Jobs processed sequentially at the computer’s pace.
   • Example: Payroll accounts, invoicing.
2. Real-Time Processing ⏱️:
   • Data processed immediately for timely results.
   • Example: Airline reservations, banks.
3. Time Sharing ⏳:
   • Multiple users work on the computer simultaneously.
   • Example: Many users accessing a server.
4. Demand Processing 📊:
   • Data processed only when needed.
   • Example: Data stored in memory until required.

Importance of Computers for Data Processing:

• Speed: Processes data quickly 🚀.
• Accuracy: Reliable and error-free processing 🎯.
• Reliability: Can work continuously without complaints 🤖.
• Storage: Efficient storage and easy access to data 💾.
• Memory Capability: Stores large amounts of data with instant recall 🧠.
• Exchange of Information: Easily shares data with other devices 🔄.
• Efficiency and Productivity: Increases productivity and efficiency 📈.
• Lower Running Cost: Reduces long-term costs 💰.
• Security: Improves overall security due to less human intervention 🔒.

Disadvantages of Using Computers for Data Processing:

• Expense: Initial setup and maintenance costs 💸.
• Trained Personnel: Requires trained individuals to operate 🧑‍💻.
• Maintenance Cost: Costly to maintain over time 🛠️.

General Evaluation:

• Data Processing Definition: Processing of information by a computer 📝.
• Processing Techniques: Batch, real-time, time sharing, demand processing 🔄⏱️⏳📊.
• Advantages of Using Computers: Speed, accuracy 🚀🎯.
• Disadvantages of Using Computers: Expense, need for trained personnel 💸🧑‍💻.

Evaluation

1. Define data processing:
   • a) Organizing data for analysis
   • b) Processing information with a computer
   • c) Storing data in computer memory
   • d) Creating data backups
2. Data processing techniques include:
   • a) Sorting and filtering
   • b) Batch processing and multitasking
   • c) Real-time processing and time sharing
   • d) Copying and pasting
3. Batch processing involves:
   • a) Processing data immediately
   • b) Inputting multiple jobs at once
   • c) Sharing processor time among users
   • d) Executing transactions instantly
4. Real-time processing is useful for:
   • a) Accounting and ledger management
   • b) Rapid data processing with immediate results
   • c) Storing data for future processing
   • d) Delayed execution of tasks
5. Time sharing allows:
   • a) Users to work simultaneously on the same computer
   • b) Processing only when necessary
   • c) Quick execution of tasks without user input
   • d) Sequential execution of jobs one after the other
6. Demand processing occurs:
   • a) When data is stored in computer memory
   • b) In real-time data processing
   • c) When users share processor time
   • d) During batch processing only
7. Multi-processing involves:
   • a) Using multiple processors to execute tasks
   • b) Processing data as soon as it’s available
   • c) Executing tasks one after the other
   • d) Storing data for future use
8. Online processing:
   • a) Involves entering transactions and getting immediate output
   • b) Delays processing until necessary
   • c) Processes data without user intervention
   • d) Doesn’t require CPU connection
9. Advantages of using computers for data processing include:
   • a) Slow operation and low accuracy
   • b) High speed and accuracy
   • c) Unreliable performance and high cost
   • d) Limited storage and memory capability
10. Computers are reliable because they:
    • a) Require constant maintenance
    • b) Work for long periods without complaints
    • c) Have slow processing speeds
    • d) Are prone to errors like humans
11. One disadvantage of using computers for data processing is:
    • a) Low running costs
    • b) Limited exchange of information
    • c) Speedy operations
    • d) High initial expense
12. Memory capability of computer systems allows:
    • a) Limited storage of data
    • b) Access to data only when required
    • c) Storing large amounts of data with instant recall
    • d) Sluggish data retrieval
13. Efficiency and productivity can be raised with computers due to:
    • a) Increased human intervention
    • b) Lower running costs
    • c) Slower data processing
    • d) Less reliance on technology
14. Overall security can be raised due to:
    • a) High human intervention
    • b) Limited exchange of information
    • c) Speedy operations
    • d) Less human intervention
15. Disadvantages of using computers for data processing include:
    • a) High initial expense, need for trained personnel
    • b) Low running costs, efficient storage
    • c) Unlimited exchange of information
    • d) Slow processing speeds, low accuracy

Class Activity Discussion

1. What is data processing?
   • Data processing involves organizing and manipulating data using computers.
2. Name four data processing techniques.
   • Batch Processing, Real-Time Processing, Time Sharing Processing, Demand Processing.
3. What is batch processing?
   • Batch processing involves inputting multiple jobs into the computer and executing them sequentially.
4. When is real-time processing useful?
   • Real-time processing is handy when data needs immediate processing, influencing ongoing activities like airline reservations.
5. Explain time sharing processing.
   • Time sharing allows multiple users to work on a computer simultaneously, sharing processor time.
6. Define demand processing.
   • Demand processing occurs when data is stored and processed only when necessary.
7. What is multi-processing?
   • Multi-processing involves having multiple processors sharing the same main memory, enabling simultaneous execution of programs.
8. Describe online processing.
   • Online processing involves immediate input of transactions and instant output, directly connected to the CPU.
9. Why are computers important for data processing?
   • Computers process data rapidly, accurately, and reliably, with efficient storage and memory capabilities.
10. How does computer processing enhance efficiency?
    • Computers raise efficiency by executing tasks quickly, reducing running costs, and enhancing overall productivity.
11. What are the advantages of computer processing?
    • Advantages include speed, accuracy, reliability, efficient storage, memory capability, easy exchange of information, raised efficiency, lower running costs, and improved security.
12. What are the disadvantages of computer processing?
    • Disadvantages include high initial expense, the need for trained personnel, and costly maintenance.
13. How does computer processing enhance security?
    • With less human intervention, computer processing enhances overall security by reducing errors and vulnerabilities.
14. Why is accuracy important in data processing?
    • Accuracy ensures that processed data is reliable and error-free, unlike manual processing which may be prone to mistakes.
15. What role does memory capability play in data processing?
    • Memory capability allows computers to store vast amounts of data and retrieve it instantly, improving overall efficiency.

Presentation:

• Use clear and simple language.
• Utilize visual aids and real-life examples to enhance understanding.

Teacher’s Activities:

• Presenting information using the whiteboard and handouts.
• Facilitating class discussions and providing explanations.
• Encouraging student participation and answering questions.

Learners’ Activities:

• Listening attentively to the teacher’s explanations.
• Engaging in discussions and asking questions for clarification.
• Taking notes and participating in group activities.

Assessment:

• Monitor student participation and comprehension during discussions.
• Review students’ notes and responses to questions.
• Assign a short quiz at the end of the lesson to assess understanding.

Evaluation Questions:

1. What is data processing?
2. Name three data processing techniques.
3. Explain batch processing with an example.
4. When is real-time processing useful?
5. Define time sharing processing.
6. What is the advantage of demand processing?
7. How does multi-processing differ from other techniques?
8. Describe online processing and its benefits.
9. List two advantages of using computers for data processing.
10. State one disadvantage of using computers for data processing.

Conclusion:
In conclusion, this lesson provides students with a comprehensive understanding of data processing techniques and the importance of computers in processing data efficiently. Encourage students to review their notes and explore further resources to deepen their understanding of the topic.