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MCQs 1: Positive logic in a logic circuit is one in which______________?

logic 0 and 1 are represented by 0 and positive voltage respectively logic 0 and, -1 are represented by negative and positive voltages respectively logic 0 voltage level is higher than logic 1 voltage level logic 0 voltage level is lower than logic 1 voltage level
Answer Explanation

MCQs 2: Among the logic families, the family which can be used at very high frequency greater than 100 MHz in a 4 bit synchronous counter is__________________?

TTLAS CMOS ECL TTLLS
Answer Explanation

MCQs 3: An OR gate has 6 inputs. The number of input words in its truth table are________________?

6 32 64 128
Answer Explanation

MCQs 4: NAND gates are preferred over others because these__________________?

have lower fabrication area can be used to make any gate consume least electronic power provide maximum density in a chip
Answer Explanation

MCQs 5: An AND gate will function as OR if________________?

all the inputs to the gates are “1” all the inputs are ‘0’ either of the inputs is “1” all the inputs and outputs are complemented
Answer Explanation

MCQs 6: A debouncing circuit is________________?

an astable MV a bistable MV a latch a monostable MV
Answer Explanation

MCQs 7: In case of OR gate, no matter what the number of inputs, a____________________?

1 at any input causes the output to be at logic 1 1 at any input causes the output to be at logic 0 0 any input causes the output to be at logic 0 0 at any input causes the output to be at logic 1
Answer Explanation

MCQs 8: Excess-3 code is known as_________________?

Weighted code Cyclic redundancy code Self-complementing code Algebraic code
Answer Explanation

MCQs 9: Indicate which of the following three binary additions are correct? 1.1011 + 1010 = 10101 II. 1010 + 1101 = 10111 ?
III. 1010 + 1101 = 11111

I and II II and III III only II and III
Answer Explanation

MCQs 10: Assuming 8 bits for data, 1 bit for parity, I start bit and 2 stop bits, the number of characters that 1200 BPS communication line can transmit is__________________?

10 CPS 120 CPS 12CPS None of the above
Answer Explanation

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