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Digital Electronics

Digital Electronics
Which one of the following is an invalid state in 8-4-2-1 binary coded decimal counter

 1000
 1100
 1001
 0011

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Digital Electronics
An EPROM

All of these
 is non volatile
 is programmable
 is of random-access type

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Digital Electronics
(44)8 in BCD 8421 code is

 00110110
 01100011
 01000100
 00100100

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Digital Electronics
A digital circuit that can store on bit is a

 XOR gate
 registor
 gate
 flip-flop

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Digital Electronics
A + Ā is equal to

 A
 1
 Ā
 0

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Digital Electronics
The complement of a function A is

 Ā
 0
 A
 1

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