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Using 4 bits the signed range of numbers is -8 to 7.

When working with signed numbers one bit is the sign bit, thus with 4 bits this leaves 3 bits for the value. With 3 bits there are 8 possible values, which when using 2s complement have ranges:

for non-negative numbers these are 0 to 7;

for negative numbers these are -1 to -8.

Thus the range for signed 4 bit numbers is -8 to 7.

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Q: What is the range of numbers that can be encoded in 4 bits using 2s complement notation?
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