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Digital Electronics

Digital Electronics
The output of a gate is LOW when at least one of its inputs is HIGH. This is true for

 AND
 NOR
 NAND
 OR

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Digital Electronics
The code used in digital systems to represent decimal digits, letters, and other special characters such as + , – , . , * , etc. is

 octal
 hexadecimal
 natural BCD
 ASCII

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Digital Electronics
A switch-tail ring counter is made by using a single D-FF, the following circuit is

  T FF.
  J-K FF.
  S-R FF.
  D FF.

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Digital Electronics
If 4 input MUXes drive a 4 input multiplexer, it results a

 16 input MUX
 6 input MUX
 4 input MUX
 8 input MUX

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Digital Electronics
What is the 2’s complement of 10110000?

 10110000
 01001111
 10001110
 01010000

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Digital Electronics
Which one of the following even parity codes are in errors. (I)100110010 (II)011101010 (III)10111111010001010

 Only (III)
 Both (I)&(III)
 Only (II)
 Both (II)&(III)

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