Computer Science for IGCSE & O level - Hardware (Section 23 - No. 22)
What is the role of the Memory Data Register (MDR) in the read operation from memory?
To hold the address from which to read data.
To store the data being read from memory.
To decode the instructions.
To provide the timing signals for the read operation.
Forklaring
The MDR stores the data from the addressed memory location during a read operation.