The Processor And Its Components Flashcards
What is the role of the processor
To execute instructions inn order to run programs
ALU?
Calculates operations and logical operations
Control unit?
In control of the fetch execute cycle.
What components are inside the processor?
Control unit
ALU.
Registers
What are Registers?
Small storage locations used to temporarily hold data and they have very high read and write speeds.
What are general purpose registers used for ?
Used as storage for any data that is required by instructions during execution.
What are special purpose registers used for ?
Store specific information
PC?
HOLDS the memory address of the next instruction to be executed in the fetch execute cycle.
CIR ?
Holds the instruction that is currently being executed by the processor.
MAR ??
Stores memory address of a memory location that is to be read from or written to.
MBR ??
HOLDS the content of a memory location that has been read from or data that is to be stored.
Status registers ??
Contains a number of bits, which can change indicate the occurrence of ann interrupt.
What is the clock used for inside the processor?
Generates timing signals that change at regular intervals. Synchronises communication between components of the computer and the rest of the computer.
