Digital Electronics
A computer has a word length of 8 bits (including sign). It is required to determine the range of integers that can be stored in the computer. If 2’s complement is used to represent the numbers, then the range will be

 -128 to 128
 -256 to 256
 -128 to 127
 -256 to 255

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Digital Electronics
2421 code is

 weighted self-complementing code
 weighted non-self-complementing code
 non-weighted and non-self-complementing code
 non-weighted self-complementing code

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