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Question 31Asked in BEL PE Computer Science, 20 Dec 2025 (5:00 PM)

A computer uses an instruction code format with a total of 16 bits. The operation code (opcode) occupies 5 bits, and the remaining bits are used to specify…

A computer uses an instruction code format with a total of 16 bits. The operation code (opcode) occupies 5 bits, and the remaining bits are used to specify either: One direct memory address, or Two register addresses (each of equal length) If the system supports 32 general-purpose registers, determine how many distinct instruction formats are possible in this computer.
  1. A4
  2. B2
  3. C16
  4. D8
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Correct answer: (B) 2

From BEL PE Computer Science PYQ, 20 Dec 2025 (5:00 PM)

This is question 31 of BEL PE Computer Science PYQ, 20 Dec 2025 (5:00 PM). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.