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Questions and Answers
Which of the following is NOT an input device?
Which of the following is NOT an input device?
- Mouse
- Keyboard
- Projector (correct)
- Microphone
Which of the following is NOT a type of software?
Which of the following is NOT a type of software?
- CPU (correct)
- Firmware
- Application software
- Operating system
What is the function of cache memory?
What is the function of cache memory?
- To display data on a monitor
- To process data
- To store data permanently
- To store frequently used data temporarily (correct)
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Study Notes
- Computer hardware consists of various components including the CPU, memory, storage, input and output devices.
- The CPU is composed of a control unit, ALU, and registers.
- RAM and ROM are included in the main memory for temporarily storing data for processing.
- Secondary memory such as hard disks, flash memory, and optical disks are used for permanent data storage.
- Input devices like keyboards and mice are used to input data into computers.
- Output devices like monitors and printers display processed data.
- Software includes operating systems, firmware, and application software.
- The operating system manages computer systems, hardware, and application software.
- Personal computers have a CPU, RAM and ROM, secondary memory, system expansion cards, and input/output ports.
- Data is represented in bits, bytes, and words, and there are different character representation code systems.
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