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Digital Electronics

Digital Electronics
What is the minimum number of 2 input NAND gates used to perform the function of 2 input OR gate

 1
 3
 4
 2

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Digital Electronics
The output of a gate is HIGH if and only if all its inputs are LOW. It is true for

 NOR
 X-OR
 NAND
 X-NOR

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Digital Electronics
Among the logic families, the family which can be used at very high frequency greater than 100 MHz in a 4 bit synchronous counter is

CMOS
TTLLS
TTLAS
ECL

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Digital Electronics
NAND. gates are preferred over others because these

have lower fabrication area
can be used to make any gate
provide maximum density in a chip.
consume least electronic power

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Digital Electronics
When will be the output of an AND gate is LOW ?

 When any input is LOW
 When any input is HIGH
 When all inputs are HIGH
 When all input is LOW

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Digital Electronics
Convert the binary number (1111000011110000) to hexadecimal number

 1010
 7070
 F0F0
 5050

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