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Digital Electronics

Digital Electronics
What is the gray code for the binary 101011?

 110101
 011111
 101011
 111110

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

 Open collector output
 Output is inverted
 Tristate
None of these

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Digital Electronics
In VLSI, the number of gate circuits per chip is

 < 10,000
 50,000 to 99,999
 10,000 to 99,999
 > 10,000

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Digital Electronics
Four ROM chips of 16 × 4 size have their address buses connected together. This system will be of size

 256 × 1
 64 × 4
 32 × 8
 16 × 16

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Digital Electronics
The state of a flip-flop can be switched by changing its ________ signals.

 triggering
 output
 clearing
 input

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Digital Electronics
If two numbers in excess-3 code are added and the result is less than 9, then to get equivalent binary

 0110 is subtracted
 0110 is added
 0011 is subtracted
 0011 is added

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