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Digital Electronics

Digital Electronics
The only function of NOT gate is to ___________.

None of these
Stop signal
Invert input signal
Act as a universal gate

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Digital Electronics
11001, 1001 and 111001 correspond to the 2’scomplement representation of the following set of numbers

 -6, -6 and -6 respectively
 -25, -9 and -57 respectively
 25, 9 and 57 respectively
 -7, -7 and -7 respectively

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Digital Electronics
The hex address of the 256th memory location is

 000FF
 00FFF
 00100
 001FF

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Digital Electronics
When will be the output of an AND gate is HIGH if there are three inputs, A, B, and C ?

 A = 1, B = 0, C = 1
 A = 1, B = 1, C = 0
 A = 1, B = 1, C = 1
 A = 0, B = 0, C = 0

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Digital Electronics
Which of the following is known as a mod-2 adder?

 X-OR gate
 NOR gate
 X-NOR gate
 NAND gate

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Digital Electronics
The 1’s complement of 11010111 is

 10101000
 11101000
 10101000
 00101000

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