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Digital Electronics

Digital Electronics
What logic function is produced by adding inverters to the inputs of an OR gate?

 AND
 NAND
 NOR
 X-NOR

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Digital Electronics
When two n-bit binary numbers are added then the sum will contain at most

 (n + 1)-bit
 (n + n)-bit
 n-bit
 (n + 2)-bit

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Digital Electronics
Which mechanism allocates the binary value to the states in order to reduce the cost of the combinational circuits?

State Minimization
State Evaluation
State Reduction
State Assignment

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Digital Electronics
The output of a NAND gate is low

 only when at least one input is high
 only when all the inputs are low
 only when all the inputs are high
 only when at least one input is low

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Digital Electronics
A D-flip-flop is said to be transparent when

 the output follows clock
 the output is HIGH
 the output is LOW
 the output follow input

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Digital Electronics
The binary number 10101 is equivalent to decimal number ___________.

12
19
27
21

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