Memory Address Register: Central Processing Unit, Accumulator (Computing), Address Range Registers - Couverture souple

 
9786133684522: Memory Address Register: Central Processing Unit, Accumulator (Computing), Address Range Registers

Synopsis

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Memory Address Register (MAR) is a CPU register that either stores the memory address from which data will be fetched to the CPU or the address to which data will be sent and stored. In other words, MAR holds the memory location of data that needs to be accessed. When reading from memory, data addressed by MAR is fed into the MDR (memory data register) and then used by the CPU. When writing to memory, the CPU writes data from MDR to the memory location whose address is stored in MAR. The Memory Address Register is half of a minimal interface between a microprogram and computer storage. The other half is a memory data register.

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