a. computer capacity is often measured in bits and bytes. a bit is the smallest unit, which is 1 or 0, in the computer's memory. a bytes is 2^3 bits. a megabyte (mb) is 2^20 bytes. how many bits are in a megabytes?

b. a gigabyte (gb) is 2^30 bytes. how many megabytes are in a gigabytes? how many bits are in a gigabytes?