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The range of numbers represented by an 8-bit two’s complement representation is
  • a)
    -128 to +127
  • b)
    -127 to +128
  • c)
    -128 to +128
  • d)
    0 to 255
Correct answer is option 'A'. Can you explain this answer?
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The range of numbers represented by an 8-bit two’s complement re...
The range of numbers represented by an 8-bit two's complement representation is -128 to 127.
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The range of numbers represented by an 8-bit two’s complement re...
The range of n bit word in 2’s complement representation is,
(−2n−1) to (2n−1 − 1)
(n-1) is used here because out of n bits 1 bit is used as a sign bit 
There is one extra negative number because "0" has only a single representation in 2's complement form
For 8 bit word, the range will be -128 to 127. 
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The range of numbers represented by an 8-bit two’s complement representation isa)-128 to +127b)-127 to +128c)-128 to +128d)0 to 255Correct answer is option 'A'. Can you explain this answer?
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