Memory Management UGC

Question 1

A Computer uses a memory unit with 256K word of 32 bits each. A binary instruction code is stored in one word of memory. The instruction has four parts: an indirect bit, an operation code and a register code part to specify one of 64 registers and an address part. How many bits are there in operation code, the register code part and the address part ?

• 7, 7, 18
• 18, 7, 7
• 7, 6, 18
• 6, 7, 18