C.P.U. REGISTER'S

CPU REGISTER' S
Register's are most important components
Of C.P.U. , which performs different types
of functions .
Like storing the data.Registers are used to store data temporarily during the execution of a program.

Following are the types of register's :
1) Program Counter (PC):
PC register is use to store the memory address of upcoming instruction for execution .
It also called as instruction pointer.
2) Instruction Register (IR):
When any instruction is processed from main memory (RAM) or executed
then that instruction is hold under IR or instruction register while it is decoded

Extra: for example : only for understanding
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3) Memory Address Register (MAR) :
This register stores the memory address of data which either fetched or store by the CPU.
4) Memory Buffer Register (MBR) :
It stores instruction and data which are received from the memory and sent from the memory.
5) INPUT OUTPUT ADDRESS REGISTER (I/O AR) :
IT'S stores or explain the address of any I/O device.
6) INPUT OUTPUT BUFFER REGISTER (I/O BR):

I/O Buffer Register is used for sharing the data between the I/O module and the processor.
 # Accumulator: This is the  register which used to store data taken from memory. Its number varies from microprocessor to microprocessor.




BY~ SAHIL MHATRE 001