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Digital Electronics

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

 NOR
 NAND
 X-NOR
 X-OR

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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
ECL
TTLAS

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Digital Electronics
Which of the following shows the correct attachment of even parity bit to the data 00001001?

 000001001
 000010010
 100001001
 000010011

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Digital Electronics
Which of the following represents (E3)16 ?

 (1BC)16-(DE)16
 (1CE)16+(A2)16
 (200)16-(11D)16
 (2BC)16-(1DE)16

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Digital Electronics
In a read-only memory information can be stored

 at the time of fabrication
 by the user only once during its life time
 in any of the above ways depending upon the type of memory
 by the user a number of times

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Digital Electronics
A multiplexer is a combinational logic circuit used to perform the operation

 NOR-OR
 AND-OR
 XOR-NAND
 AND-AND

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