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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
 1001
 1100
 0011

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Digital Electronics
The NAND gate can function as a NOT gate if

 one input is set to 0
 one input is set to 1
 inputs are left open
 all inputs are connected together

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Digital Electronics
At which the digital data can be applied to a a gate is known as ________ frequency.

 Run-time
 Operating
 Propagation
 Truth

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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-bit
 (n + 2)-bit
 (n + n)-bit

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Digital Electronics
The output of a NAND gate is low

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

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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 Assignment
State Reduction
State Minimization
State Evaluation

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