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Digital Electronics

Digital Electronics
Which one of the following is an invalid state in 8-4-2-1 binary coded decimal counter

 1000
 1001
 0011
 1100

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Digital Electronics
1’s complement of 17 is

 11100.
 10111.
  01110.
 10001.

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Digital Electronics
F’s complement of (2BFD)Hex is

 D403
 C403
 D402
 E304

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Digital Electronics
The NOR gate is OR gate followed by ___________.

None of these
AND gate
NOT gate
NAND gate

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Digital Electronics
Which of these circuits will give yield carry with more delay 1. Carry look ahead adder 2. Ripple carry adder

 both are same
 2.
 1.
 none

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Digital Electronics
A hexadecimal odometer displays F 52 F. The next reading will be

F52E
F53O
G52F
F53F

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