You have been assigned to design a 8M Byte memory board out

You have been assigned to design a 8M Byte memory board out of 512K Byte chips. Each time an access is made to the memory two bytes are returned. Thus, the memory is half-word addressable. Each of the 512KB chips is byte addressable. Answer the following questions. How many bits are required in the overall board to represent the memory address? How many chips are needed to build the memory? How many of the memory address lines must be split-off and decoded for input into Chip-Enable pins?

Solution

Answer:

A)32 bits are required for reprasent memory address

B) Eight 4Mb chips are needed to build the memory

C) two Address line .The 2-to-4 decoder, and the 3-to-8 decoder

each output from the memory decoder goes to 8 RAM cells.