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Digital Electronics

Digital Electronics
The output of a gate is HIGH if and only if all its inputs are LOW. It is true for

 NAND
 X-NOR
 NOR
 X-OR

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Digital Electronics
(FE35)16 XOR (CB15)16 is equal to

 (3520)16
 (FF35)16
 (FF50)16
 (3320)16

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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 Reduction
State Minimization
State Assignment
State Evaluation

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Digital Electronics
While using a frequency counter for measuring frequency, two modes of measurement are possible. 1. Period time 2. Frequency mode There is a ‘cross-over frequency’ below which the period mode is preferred. Assuming the crystal oscillator frequency to be 4Mhz the crossover frequency is given by

 2 Mhz
 2 Khz
 1 Khz
 8 Mhz

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

19
12
27
21

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Digital Electronics
When will be the output of an AND gate is LOW ?

 When all inputs are HIGH
 When any input is LOW
 When all input is LOW
 When any input is HIGH

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