Digital Electronics - Study Mode
[#141] The NAND gate is AND gate followed by ___________.
Correct Answer
(A) NOT gate
[#142] 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
Correct Answer
(C) ECL
[#143] In Boolean algebra, the bar sign (-) indicates ___________.
Correct Answer
(C) NOT operation
Explanation
Solution: In Boolean algebra , the bar sign (-) indicates the NOT operation . The NOT operation is a unary operation that inverts the value of a Boolean variable. If the variable is true , applying the NOT operation results in false , and vice versa. OR operation and AND operation are indicated by + and • respectively in Boolean algebra, not by the bar sign. Thus, Option C: NOT operation is the correct answer.
[#144] A hexadecimal odometer displays F 52 F. The next reading will be
Correct Answer
(D) F53O
[#145] The binary code of (21.125)10 is
Correct Answer
(A) 10101.001