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Digital Electronics

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

ECL
CMOS
TTLLS
TTLAS

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Digital Electronics
Why small bubble is given on the output of the NAND gate symbol ?

 Tristate
 Open collector output
None of these
 Output is inverted

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Digital Electronics
What is the logic which controls a stair case light associated with two switches A and B located at the bottom and top of the stair case respectively?

 X-OR
 AND
 OR
 X-NOR

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Digital Electronics
LSI means

 Large Scale Integration
 Large Symbol Invertor
 Large Symbol Integration
 Large Scale Invertor

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Digital Electronics
In decimal number system what is MSD

 First digit from right to left
 Middle digit
 First digit from left to right
 Mean of all digits

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Digital Electronics
Choose the option which is not a code conversion standard

 Truth code
 BCD code
 Gray code
 Excess-3 code

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