1. A451 GCSE Computing | Hardware| Required knowledge
Definition.
Components
Input
Process
Storage
Output
Computer architecture
Von Neumann
Binary logic
Why do computers use binary values?
Logic gates
Truth tables
Output devices
Monitor
Printer
Plotter
Speakers
Actuators
Secondary storage
Magnetic hard disk
Optical disk
Flash memory
Considerations for selecting storage:
Capacity
Speed
Portability
Durability
Reliability
Central processing unit (CPU)
Arithmetic & logic unit
Control unit.
Fetch-execute cycle
Fetch
De-code
Execute
The boot sequence
Clock speed
Processor speeds (MHz, GHz)
Cache memory
Multiple processor cores
Advantages / disadvantages.
Input devices
Keyboard
Mouse
Touch screen
Microphone
Camera
Sensor
Bar code scanner
Eye-typer
Foot mouse
Puff-suck switch
Braille keyboard
Memory
Random Access Memory (RAM)
Volatile
Read Only Memory (ROM)
Non-volatile
Virtual memory
Flash memory
John Von Neumann
It is your responsibility to make sure you regularly revisit this knowledge outside of class.