CPU

CPU

1. computer system

   • takes a set of digital inputs, processes them then outputs them, occasionally storing them for later use.

2. parts of a CPU

   • cache
   • clock
   • cores
   • alu
   • control unit
   • registers
   • buses
     • address bus
     • data bus
     • memory bus

3. fetch, decode, execute

   • fetch
     • the cpu fetches the instructoins
   • decode
     • the cpu decodes the instructoins
   • execute
     • the cpu executes the instruction

4. von neumann

   • registers
     • memory address register
       • mar
     • memory data register
       • mdr
     • accumulater
       • ac
     • program counter
       • pc
     • current instruction register
       • cir
   • could perform multiple tasks, unlike other computers

5. performance

   • clock speed
   • cache

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