Exam-style question
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In a model with 4 bits allocated to the opcode, how many different opcode patterns are possible?.
- A.4
- B.8
- C.12
- D.16
Model answer
What a good answer should say
- 16
Explanation
Why this works
Four bits can represent 2^4, which equals 16, different patterns. In this model, the opcode bits include the basic operation and the addressing mode.
Common mistake
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