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Digital Electronics

Digital Electronics
In the toggle mode a JK flip-flop has

 J = 1, K = 0.
 J = 0, K = 0.
 J = 0, K = 1.
 J = 1, K = 1.

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Digital Electronics
A gate is enabled when its enable input is at logic 0. The gate is

 NAND
 NOR
 none of these
 AND

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Digital Electronics
The output of a NAND gate is low

 only when all the inputs are high
 only when at least one input is low
 only when at least one input is high
 only when all the inputs are low

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Digital Electronics
Which of the following is a digital device

 Resistance of a material
 Microphone
 Regulator of a fan
 Light switch

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Digital Electronics
The 7-bit Hamming code is used to transmit

 no data bits
 7 data bits
 4 data bits
 3 data bits

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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
 hexadecimal
 octal

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