Exam-style question
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What decimal value does the 8-bit two’s complement value 00010110 represent?.
- A.22
- B.-22
- C.86
- D.-106
Model answer
What a good answer should say
- 22
Explanation
Why this works
The most significant bit is 0, so the value is positive. Converting 00010110 as an ordinary binary number gives 16 + 4 + 2 = 22.
Common mistake
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