Computer Cpu

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...

 

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