Hardware

Hardware

1. CPU

   • control unit
     • receives instructions from RAM and directs
   • immediate access store
   • number of cores
     • not twice as fast
   • clock speed
     • measured in GHz
   • cache
     • high speed memory

2. binary logic

   • computer components use 0 and 1
   • high to lerance
     • stops mistakes
   • allows use of logic gates
     • AND
     • OR
     • NOT

3. memory

   • flash
     • USB
   • cashe
   • virtual
   • RAM
     • volitile
   • ROM

4. secondary storage

   • solid state
     • like USB
   • optical
   • magnetic

5. number core

   • not twice as fast
   • single
   • quad
   • dual

6. fetch, decode, execute cycle

   • Fetch
     • instruction from ram
   • work out
     • what to do
   • Process it

7. For special needs

   • braille keyboard
   • Eye typer
   • speech recognition