Arithmetic & Logic Unit (ALU)
Internal Clock
Used for flow control
Performs operations on data, such as addition, subtraction; fixed-point and floating-point arithmetic; Boolean logic
Program Control Unit
Link the control unit, and ALU and registers
Fetches, decodes and executes program instructions
Derived form the system clock (directly or indirectly)
Internal Buses
Registers
Logic Gates
Fast memory locations that may be dedicated or general purpose
