CPU - Components

Control Unit (CU)
1. Controls data moving through the processor, controls the timing of operations and the instructions sent to both the processor and any peripheral devices.
  1. Controls and monitors the hardware, making sure that the commands given to it by the application software used.
  2. Controls the input and output of data so that the signals
  3. It controls the flow of data within the CPU (Fetch-Execute Cycle).
  4. It controls the flow of data within the CPU (Fetch-Execute Cycle)
Arithmetic Logic Unit (ALU)
Arithmetic Logic Unit (ALU)
1. Performs calculations on the data. (Arithmetic Part)
2. Deals with logic and comparisons. (Logic Part)
3. Processes data by either manipulating or acting upon it.
Registers
1. The Accumulator - Holds data that is being processed.
2. The Program Counter - Used to store the location of the next instruction.
3. The Memory Address Register (MAR) - Used to store the location of the next instruction and places it into RAM.
4. The Instruction Register - A type of memory found in the CPU.
5. The Memory Data Register (MDR) - Instructions are copied here temporarily from the main memory.

Resource summary

	Created by Thomas Haden about 7 years ago