QE2-1 How Do the Main Components of Computer Hardware Work? Flashcards
What are the main components of computer hardware?
Input: Devices like keyboards, mouse, scanners, and microphones.
CPU: The central processing unit, responsible for processing data.
Output: Devices like video displays, printers, and speakers.
Storage: Magnetic disks, optical disks, flash drives, and cloud storage.
What are input devices and give some examples?
Keyboard
Mouse
Touchpad/Touchscreen
Scanner
UPC reader
Microphone
Voice recognition
Internet of Things (IoT)
What are output devices and give some examples?
Output devices allow users to receive processed data or act as input for other devices. Examples include:
Video display
Speakers
Printer
3D printers
Virtual reality (VR) devices
Robot movement
What is secondary storage, and what are its types?
Secondary storage is nonvolatile storage that retains data when the power is turned off. Types include:
Magnetic disks (e.g., hard drives)
Optical disks (e.g., DVDs)
Flash drives (e.g., USB drives)
Cloud storage
What is the role of the CPU in computer hardware?
The Central Processing Unit (CPU) processes instructions, performs arithmetic and logical operations, and manages the flow of data between input, output, and storage devices.
It is often referred to as the “brain” of the computer.
What types of memory does the CPU work with?
The CPU works with:
Main Memory (RAM): Temporary storage directly accessible by the CPU.
Cache Memory: High-speed memory that stores frequently used data for quick access.
What is RAM, and why is it important?
RAM (Random Access Memory) is a type of main memory that temporarily stores data and instructions that the CPU needs to access quickly.
It is volatile, meaning data is lost when the power is off.
