Question

If a ROM has 15 address lines, then the capacity of data stored is

Answer 1

Explanation:

1024*8 means that you have:

1024 locations

8 bits per location

Address Lines:

Assuming that number of address lines (address bits) is n, how can we find n? If n=1, you can only address 2 locations (0 and 1). If n=2, you can address 4 locations (0, 1, 2, and 3). As you can see, number of addressable locations = 2^n.

Given that number of addressable locations = 1024, then 1024=2^n

This means that n=log(1024) to the base 2.

Thus, n=10.

Data Lines:

You have 8 bits for every location, therefore your memory needs a data bus with 8 lines. Every time you read a location (by loading its address on the ...