The three parts of the processor - CU A Love U Right!
CU - control unit
* controls the other parts of the processor
* make sure the instructions are carried out in the correct order
ALU - Arithmetic Logic Unit
* carries out calculations
* makes decisions based on logic (AND OR NOT)
R - Registers
* temporary memory locations
Buses - wires that allow data to be transferred
Address Bus -
carries storage locations to be accessed
unidirectional (one direction)
how many locations it can access 2 ^ width
does it affect performance??? - no just makes more locations
Data Bus
bi-directional
carries data back and forth from processor and memory locations
does it affect performance??? - increasing the data bus means you can carry more data per clock cycle, improving performance!
Word size of a computer system??? - (size of the data bus) maximum number of bits the processor can process at one time!
No comments:
Post a Comment