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Home⇒ Computer Engineering⇒ Digital computer electronics
1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q1 ⇒ The functional difference between SR flip-flop and JK flip-flop is that JK flip-flop accepts both inputs 1 [other wrong options] [Discuss in forum] ![]() ![]() JK flip-flop has a feed back path JK flip-flop is faster than SR flip-flop JK flip-flop does not require external clock |
Q2 ⇒ An inverter is also called a _____ gate. NOT [other wrong options] [Discuss in forum] ![]() ![]() OR AND NAND |
Q3 ⇒ Flip-flop outputs are always complimentary [other wrong options] [Discuss in forum] ![]() ![]() the same same as inputs independent of each other |
Q4 ⇒ An OR gate has 6 inputs. What is the only input word that produces a 0 output? 0 [other wrong options] [Discuss in forum] ![]() ![]() 111000 111 111111 |
Q5 ⇒ The m-bit parallel adder consists of: m full adders [other wrong options] [Discuss in forum] ![]() ![]() m-1 full adders m/2 full adders (m+1) full adders |
Q6 ⇒ A NOR gate has two or more input signals. All input must be _____ to get a high output low [other wrong options] [Discuss in forum] ![]() ![]() high 1's some low some high |
Q7 ⇒ The ASCII code is a 7-bit code for All of the above [other wrong options] [Discuss in forum] ![]() ![]() letters numbers other symbols |
Q8 ⇒ A p- channel enhancement type MOSFET performs much the same function as a PNP transistor, except that it is controlled by voltage rather than by current, so that it requires very little current at the control terminal [other wrong options] [Discuss in forum] ![]() ![]() it operates much faster it is considerably larger it is controlled by current rather than by voltage like a bipolar transistor |
Q9 ⇒ In which of the following adder circuits, the carry look ripple delay is eliminated? Carry-look-ahead adder [other wrong options] [Discuss in forum] ![]() ![]() Half adder Full adder Parallel adder |
Q10 ⇒ How many bits are required to encode all twenty six letters ten symbols, and ten numerals? 6 [other wrong options] [Discuss in forum] ![]() ![]() 2 8 10 |
Q11 ⇒ The control and arithmetic-logic sections are called the _____ Central Processing Unit [other wrong options] [Discuss in forum] ![]() ![]() Input / Output Unit Control Unit Block diagram |
Q12 ⇒ What logic function is obtained by adding an inverter to the inputs of an AND gate? NOR [other wrong options] [Discuss in forum] ![]() ![]() OR XOR NAND |
Q13 ⇒ An odd-parity generator produces an odd-parity bit to go along with the data. The parity of the transmitted data is _____ An XOR gate can test each received word for parity rejecting words with _____ odd, even [other wrong options] [Discuss in forum] ![]() ![]() low, high high, low even, odd |
Q14 ⇒ The Gray code for decimal 7 is 100 [other wrong options] [Discuss in forum] ![]() ![]() 101 111 1011 |
Q15 ⇒ The fan-out capability of a digital building block can be defined as the number of inputs that one output can transmit to [other wrong options] [Discuss in forum] ![]() ![]() the number of inputs that can transmit to one input the amount of cooling required for fanning the hear out the maximum power dissipation (heat generation) that the unit can stand |
Q16 ⇒ Which of the following flip-flops is free from race around problem? master slave JK flip-flop [other wrong options] [Discuss in forum] ![]() ![]() SR flip-flop T flip-flop All of the above |
Q17 ⇒ A half-adder is also known as: EX-OR circuit [other wrong options] [Discuss in forum] ![]() ![]() AND circuit NOR circuit NAND circuit |
Q18 ⇒ The leading bit stands for the _____ and the remaining bits for the _____ is known as signed binary numbers. sign, magnitude [other wrong options] [Discuss in forum] ![]() ![]() value, sign variable, value sign, remainder |
Q19 ⇒ Which of the following logic families has the highest noise immunity? HTL [other wrong options] [Discuss in forum] ![]() ![]() TTL RTL DTL |
Q20 ⇒ The 2's compliment of binary number 010111.1100 is 101000.01 [other wrong options] [Discuss in forum] ![]() ![]() 101001.11 10111.0011 101000.0011 |
Or |