A computer employ chips of 256 × 8 and ROM chips of 1024 × 8. The computer system needs 2k byte of RAM, 4K. bytes of ROM and four interface units, each with four register. A memory mapped 1/0 configuration is used. The two highest order bits of the address assigned 00 for RAM, 01 for ROM, and 10 for interface registers. How many RAM and ROM chips are required?