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Digital Electronics

Digital Electronics
The field, which is never present in an assembly language statement, is

 Operand
 Comment
 Opcode
 Continue

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Digital Electronics
(1D)16 in BCD 8421 code is

 00100100
 00011101
 00011111
 00101001

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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 Khz
 1 Khz
 2 Mhz
 8 Mhz

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Digital Electronics
The only function of NOT gate is to ___________.

None of these
Stop signal
Act as a universal gate
Invert input signal

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Digital Electronics
The most suitable gate for comparing two bits is

 NAND
 OR
 AND
 X-OR

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

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

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