1 A 256K x 8 memory systems is made from 16K x 8 memory chip

1- A 256K x 8 memory systems is made from 16K x 8 memory chips. How many memory chips are needed?

2- You want to buy a M27C256B memory chip. You need 90 ns memory access time
and in a PLCC package. The device must operate in a system that has to work in an
ambient temperature of up to 90oC. VCC tolerance is not a factor and the tape-reel packing
is desired. What is the ordering part number?

Solution

We need 256/16 = 16 memory chips.

So 16 memory chips of 16k*8 are needed to form 256k*8 memory chip.