Architecture Of CPU

Architecture Of CPU

1. CPU

   • ALU
     • logical calculations within CPU
   • Control Unit
     • flow of instructions
   • Cache
     • Frequently stored instructions
   • Central processing unit
     • Brains of computer
   • Fetch, decode, execute INSTRUCTIONS

2. Von neumann Architecture

   • Registers
     • MAR
       • address to fetched/sent to memory
     • MDR
       • data sent/fetched from memory
     • PC
       • next instruction address
     • ACC
       • Results for ALU
     • High speed memory CPU
   • data and instructions stored together in memory

3. Performance

   • Clock speed
     • in Hertz
     • how many fde cycles in a second.
   • Number of cores
     • each core = 1 fde cycle
       • more cores = faster
   • Cache size
     • frequently used instructions.
       • larger = slower but more space
       • smaller = faster but less space