Digital Electronics
The output of a logic gate is 1 when all its inputs are at logic 1. The gate is either

 a NAND or a NOR
 an AND or a NOR
 an OR or an X-OR
 an AND or an OR

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Digital Electronics
Consider the representation of six-bit numbers by two’s complement, one’s complement, or by sign and magnitude: In which representation is there overflow from the addition of the integers 011000 and 011000?

Two’s complement only
Two’s complement and one’s complement only
Sign and magnitude and one’s complement only
All three representations

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