System Unit, Input and Output Devices JSS 1 Second Term Lesson Notes Week 7
Computer Studies ICT JSS 1 Second Term Lesson Notes Week 7
Subject: Computer Studies ICT
Class: JSS 1
Term: Second Term
Week: 7
Topic 1: System Unit
Duration: 45 minutes
Entry Behaviour: Students are expected to have a basic understanding of computer hardware components.
Key Words: System unit, Motherboard, CPU, RAM, Storage Devices.
Content:
System Unit: The system unit is the main component of a computer where all the internal hardware components are housed. It typically includes the motherboard, CPU (Central Processing Unit), RAM (Random Access Memory), storage devices, and power supply unit.
Difference between Input and Output Devices: Input devices are used to input data and commands into the computer, while output devices display or present processed data to the user.
- Input Devices: Examples include keyboards, mice, scanners, and microphones. They convert physical actions or data into electronic signals that the computer can process.
- Output Devices: Examples include monitors, printers, speakers, and headphones. They receive electronic signals from the computer and convert them into forms that are understandable or usable by humans
Write short note on System unit
State the difference input device and output device.
System Unit:
The system unit is the main component of a computer where all the internal hardware components are housed. It typically includes the motherboard, CPU (Central Processing Unit), RAM (Random Access Memory), hard drive, power supply, and other essential components. The system unit is responsible for processing data, executing instructions, and managing the overall functioning of the computer.
Difference between Input and Output Devices:
Input devices are used to input data and commands into the computer, while output devices display or present processed data to the user.
- Input Devices: Input devices allow users to input data and commands into the computer. Examples include keyboards, mice, touchpads, scanners, and microphones. These devices convert physical actions or data into electronic signals that the computer can process.
- Output Devices: Output devices display or present processed data to the user. Examples include monitors, printers, speakers, and headphones. These devices receive electronic signals from the computer and convert them into forms that are understandable or usable by humans, such as text, images, or sound.
Class Activity Discussion :
- What is the system unit of a computer?
- Answer: The system unit is the main housing for internal hardware components of a computer, such as the motherboard, CPU, RAM, and storage devices.
- What components are typically found inside the system unit?
- Answer: Inside the system unit, you’ll usually find the motherboard, CPU, RAM modules, hard drive or SSD, power supply unit (PSU), and various other components necessary for the computer to function.
- What is the function of the CPU in the system unit?
- Answer: The CPU (Central Processing Unit) is the “brain” of the computer, responsible for executing instructions, performing calculations, and controlling the operation of other hardware components.
- How does RAM contribute to the performance of the system unit?
- Answer: RAM (Random Access Memory) provides temporary storage for data and instructions that the CPU needs to access quickly. It allows the computer to run multiple programs simultaneously and switch between them efficiently.
- What is the purpose of the storage devices inside the system unit?
- Answer: Storage devices, such as hard drives and SSDs, store data and programs permanently or semi-permanently. They retain information even when the computer is turned off and provide long-term storage for files and applications.
- Why is the motherboard considered the backbone of the system unit?
- Answer: The motherboard connects and integrates all the other components of the system unit, providing communication pathways and power distribution to ensure proper functioning of the computer.
- What role does the power supply unit (PSU) play in the system unit?
- Answer: The PSU converts AC power from the wall outlet into DC power that the computer’s components can use. It supplies power to all the internal hardware components of the system unit.
- How can I upgrade the components inside the system unit to improve performance?
- Answer: You can upgrade the system unit by replacing or adding components such as CPU, RAM, storage drives, graphics card, and power supply unit to enhance performance according to your requirements.
- Are all system units the same size and shape?
- Answer: No, system units come in various sizes and form factors depending on the type of computer and its intended use. For example, desktop computers typically have larger system units than laptops or small form factor PCs.
- Can I open and modify the components inside the system unit myself?
- Answer: Yes, most system units are designed to be easily opened and modified by users or technicians. However, it’s essential to follow proper safety precautions and handle components carefully to avoid damage.
Evaluation :
- The system unit is the main component of a computer where all the internal ____ components are housed.
- a) Software
- b) Hardware
- c) Peripheral
- d) External
- Answer: b) Hardware
- Inside the system unit, you’ll typically find the motherboard, CPU, RAM modules, and ____.
- a) Printer
- b) Keyboard
- c) Storage devices
- d) Speakers
- Answer: c) Storage devices
- The CPU, also known as the Central Processing Unit, is responsible for executing instructions and controlling the operation of other ____ components.
- a) Hardware
- b) Software
- c) Peripheral
- d) External
- Answer: a) Hardware
- RAM, or Random Access Memory, provides temporary storage for data and instructions that the CPU needs to access ____.
- a) Quickly
- b) Slowly
- c) Occasionally
- d) Never
- Answer: a) Quickly
- Storage devices such as hard drives and SSDs store data and programs ____.
- a) Temporarily
- b) Permanently
- c) Occasionally
- d) Randomly
- Answer: b) Permanently
- The motherboard is responsible for connecting and integrating all other components inside the system unit, acting as the computer’s ____.
- a) CPU
- b) Brain
- c) Backbone
- d) Heart
- Answer: c) Backbone
- The power supply unit (PSU) converts AC power from the wall outlet into ____ power for the computer’s components.
- a) Digital
- b) Analog
- c) Mechanical
- d) DC
- Answer: d) DC
- Input devices are used to input ____ and commands into the computer.
- a) Software
- b) Hardware
- c) Data
- d) Electricity
- Answer: c) Data
- Common examples of input devices include keyboards, mice, scanners, and ____.
- a) Monitors
- b) Printers
- c) Speakers
- d) Microphones
- Answer: d) Microphones
- Output devices display or present processed ____ to the user.
- a) Hardware
- b) Data
- c) Electricity
- d) Software
- Answer: b) Data
- Monitors, printers, speakers, and headphones are examples of ____ devices.
- a) Input
- b) Output
- c) Peripheral
- d) External
- Answer: b) Output
Presentation:
- Step 1: Introduction to System Unit:
- Define the system unit and its role in a computer.
- Explain the components housed within the system unit, such as the motherboard, CPU, RAM, and storage devices.
- Step 2: Explanation of Input and Output Devices:
- Define input and output devices.
- Provide examples of common input and output devices and their functions.
- Step 3: Differences between Input and Output Devices:
- Highlight the distinctions between input and output devices, emphasizing their respective roles in the computing process.
Teacher’s Activities:
- Present the lesson content using visual aids and real-life examples.
- Engage students in discussions to ensure understanding.
- Provide opportunities for students to ask questions and seek clarification.
Learners’ Activities:
- Listen attentively and take notes during the lesson.
- Participate in class discussions and activities.
- Ask questions to deepen understanding.
Assessment:
- Informal assessment through questioning during the lesson.
- Observation of students’ participation and engagement.
- Assignments or quizzes to evaluate comprehension.
Conclusion:
- Summarize key points of the lesson.
- Reinforce the importance of understanding the system unit and input/output devices in computer studies.
- Preview upcoming topics or assignments.
