Computer Register Memory and it’s types-Gyanchautari

Register memory

1. Fastest memory / high speed
2. It holds the data for immediate processing / temporary
3. Less access time
4. A group of flip flop is called register
5. Data holding capacity is very less

Types of register

1. MAR(Memory Address Register): It contains the address in memory  of the word to be written from or read into the MBR.
2. MBR(Memory Buffer Register): It contains of a word to be stored in memory or is used to received a word from memory.
3. IR(Instruction Register): Contains the 8-bit op-code instruction being executed.
4. IBR(Instruction Buffer Register): It is used to temporary hold the instruction from a word in memory.
5. PC(program Counter): contains the address of the next instructions to be executed. It holds 16 bits data
6. Accumulator: Stores the result of arithmetic and logic operations. It holds 8 bit data and accessible to the programmer.