Hello

Data memory

Data memory is used to read and write data

Example

Address       Data

1                     10

2                      12

3                       14

4                      16

Load the data from memory address 2 and save into A register ( read data from memory)

Store data from A register to memory address 3 (write data to memory

Suppose

Data memory specification

Address bus 2 bit

Data bus 4 bit

Accumulator register

How to make data memory? how many address and data register I have to use in data memory ?

 

How to make data memory?

You could do it the hard way, using data latches; or you could (more cheaply), just buy a memory IC.

how many address and data register I have to use in data memory ?

Anything from 1 (a 1-bit latch or register) to a gazillion googabytes. That's a bit like asking "How long is a piece of string?". Or were you referring to the 2 bit/4 bit example?