Hardware

Hardware

CPU
1. ALU(arithmetic logic unit)
  1. does all the maths
2. Immediate access store
  1. Register
3. Control Unit
  1. Receives instruction from RAM and directs
4. Clock speed
  1. measures in GHz
    1. 1000 million per second
5. Cache
  1. High speed memory
    1. More memory the faster it will be
6. Number of cores
  1. Not twice as fast
  2. Does improves the speed
7. Fetch, Decode, execute cycle
  1. Fetch instructions/data from RAM
  2. Work out what to do
  3. Process it
Secondary storage
1. Magnetic
2. Optical
3. Solid state
Memory
1. cashe
2. Virtual
3. Ram - volitile
4. ROM - boot sequence
5. Flash - USB
Binary Logic
1. Allow use of logic gates
  1. AND
  2. OR
  3. NOT
2. High tolerance
  1. Stop mistakes
3. Computer components use 0 and 1(on and off)
User with special needs
1. Braille keyboard
2. Eye typer
3. Speech recognitation

Zusammenfassung der Ressource

	Erstellt von psahil140 vor mehr als 8 Jahre