Top 350+ Solved Digital Electronics and Logic Design MCQ Questions Answer
Q. The input at the 1, 2, 4, 8 inputs to a 4-line to 16-line decoder with active- low outputs is 1110. As a result, output line 7 is driven LOW.
a. true
b. false
c. none of the above
d. can not predict
Q. When decisions demand two possible actions, the IF/THEN/ELSE control structure is used.
a. true
b. false
c. none of the above
d. can not predict
Q. TTL stands for transistor-technology-logic.
a. true
b. false
c. none of the above
d. can not predict
Q. The 54 prefix on ICs indicates a broader operating temperature range, generally intended for military use.
a. true
b. false
c. none of the above
d. can not predict
Q. The abbreviation for an exclusive-OR gate is XOR.
a. true
b. false
c. none of the above
d. can not predict
Q. In an even-parity system, the parity bit is adjusted to make an even number of one bits.
a. true
b. false
c. none of the above
d. can not predict
Q. In an even-parity system, the following data will produce a parity bit = 1. data = 1010011
a. true
b. false
c. none of the above
d. can not predict
Q. The following combination is correct for an ODD parity data transmission system: data = 011011100 and parity = 0
a. true
b. false
c. none of the above
d. can not predict
Q. The XOR gate will produce a HIGH output if only one but not both of the inputs is HIGH.
a. true
b. false
c. none of the above
d. can not predict
Q. When decisions demand one of many possible actions, the ELSIF control structure is used.
a. true
b. false
c. none of the above
d. can not predict
Q. The K-map provides a "graphical" approach to simplifying sum-of- products expressions.
a. true
b. false
c. none of the above
d. can not predict
Q. Even parity is the condition of having an even number of 1s in every group of bits.
a. true
b. false
c. none of the above
d. can not predict
Q. The look-ahead carry method suffers from propagation delays.
a. true
b. false
c. none of the above
d. can not predict
Q. A pull-up resistor is a resistor used to keep a given point in a circuit HIGH when in the active state.
a. true
b. false
c. none of the above
d. can not predict