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Digital Electronics

Digital Electronics
Which of the following is 1’s complement representation of -34?

 11011110
 10100010
 01011101
 11011101

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Digital Electronics
Complement of NOR and OR gate is ________ and ________ respectively.

 NAND, AND
 NOR, OR
 OR, NOR
 AND, NAND

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Digital Electronics
The voltage levels for positive logic system

 must necessarily be 0 V and 5 V
 may be positive or negative
 must necessarily be negative
 must necessarily be positive

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Digital Electronics
An AND gate will function as OR if

All the inputs are ‘0’
All the inputs to the gates are “1”
All the inputs and outputs are complemente'
Either of the inputs is “1”

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Digital Electronics
A self-complementing code for the decimal digits is created using the weight 4 4 3 -2. The value of 8592 in the code is

 1100 0111 1111 0011
 1000 0101 1001 0010
 1100 1001 1111 1000
 1100 1011 1111 1001

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Digital Electronics
The momentary change in the output/state of the flip-flops is known as

 inverter
 trigger
 unstable state
 tri-state

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