ICT HARDWARE
- Created by: ChloeCallaghan
- Created on: 01-05-16 10:53
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- Hardware
- Processing
- At heart of a computer system is the CPU (Central Processing Unit)
- CPU's job is to perform all instructions and calculations required for the computer to function
- Comes in form of a silicon chip, known as a Microprocessor
- CPU's job is to perform all instructions and calculations required for the computer to function
- The Motherboard is a PCB (Printed Circuit Board)
- Holds many of the systems vital components including the CPU
- At heart of a computer system is the CPU (Central Processing Unit)
- Input and Output Devices
- Input
- Allows users to enter data into a system
- Output
- Allow system to transfer or display (output) data
- Input
- Internal Memory
- Computers need to hold information when they are working.
- Two Types of Internal Memory:
- ROM (Read Only)
- Contains the commands that are designed to be read only, such as the system's boot up instructions
- RAM (Random Access)
- Data is stored in the memory temporarily and is lost when PC is switched off
- ROM (Read Only)
- Two Types of Internal Memory:
- Computers need to hold information when they are working.
- Backing Storage
- Computers need to store files after they have been switched off.
- Most common device used for this is a Hard Drive
- External Hard Drives are used to transfer data between systems
- Including Memory Sticks and CD/DVDs
- Computers need to store files after they have been switched off.
- Processing
- ICT REVISION
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