GATE | Quiz for Sudo GATE 2021 | Question 31

In a computer laboratory all system are 14 bit and support 2KW memory. There are two types of instructions are placed in memory (one address and zero address). If there exist 5 one address instructions then how many zero address are possible?

Note – This question is multiple select questions (MSQ).
(A) Total number of one address instructions are 8
(B) Total number of zero address instructions are 2028
(C) Total number of zero address instructions are 6144
(D) Total number of one address instructions are 10

Answer: (A) (C)
Explanation: According to given data,

Therefore,
Total number of one address instructions

= number of opcode 
= 23 
= 8 

And zero address instructions

= (23 - 5)*211
= 3*2048
= 6144 

So, option (A) and (C) are correct.
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