Hardware

Hardware

1. Special needs hardware

   • Braille Keyboard

2. Binary Logic

   • 0 and 1
   • Logic gates
     • AND, OR, NOT

3. Storage

   • Secondary storage
     • HDD
     • SSD
     • USB
   • Primary Storage
     • Cache
     • RAM

4. CPU

   • Cache
     • High speed memory
   • Clock speed
     • Instructions per second, measured in GHz
   • ALU
     • Does the maths
   • Registers
     • Immediate access store
   • Control Unit
     • Receives instructions from RAM
       • Fetch, decode and execute