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Digital Electronics

Digital Electronics
EBCDIC code is a

 5-bit code
 7-bit code
 8-bit code
 10-bit code

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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

 ASCII
 natural BCD
 octal
 hexadecimal

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Digital Electronics
The inputs of a NAND gate are connected together. The resulting circuit is ___________.

AND gate
NOT gate
None of these
OR 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

 1.
 both are same
 none
 2.

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Digital Electronics
An exclusive NOR gate is logically equivalent to

 inverter followed by an X-OR gate
 complement of a NOR gate
 NOT gate followed by a NOR gate
 X-OR gate followed by an inverter

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Digital Electronics
The voltage levels for positive logic system

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

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