CPU is the Brain of the computer… It consists of 3 units…
â CONTROL UNIT: (CU)
Supervisor,control all the logics…
â ARITHMATIC & LOGICAL UNIT (ALU)
It performs logical operations such as =, + , – , /, * etc…
â REGISTER: (REG)
Also known as primary memory or temp memory area for CPU instructions. Registers length or size is measured in bits…
TYPES OF REGISTER:
ADDRESS REG:
A reg which stores all the bits of an add which can be processed as single unit…
DATA REG:
Stores the data temp before it's used…
ACCUMALTOR REG:
Contains the data to be processed…
CONTROL REG:
provide storage location for control data…
INDEX REG:
Which is added to a reference add to provide the location to be accessed…
BASE REG:
Contains the add of the start of a program…
INSTRUCTION REG:
Temp[ storage area for the inst that is being executed…
INST ADD REG (IAR):
Stores the location where inst are found…
MEM ADD REG (MAR):
Contains the add of next location to be accessed…
MATH C PROCESSOR:
A dedicated IC that can be added to a sys to carryout mathematical function for more rapidly than a standard CPU…
CACHE MEMORY:
A section of high speed mem which stores data that the comp can access quickly…