Digital Computer Electronics - Study Mode

[#101] A combinational logic circuit which is used when it is desired to send data from two or more source through a single transmission line is known as
Correct Answer

(C) multiplexer

[#102] Conversion of binary number 1001001 2 to hexadecimal is
Correct Answer

(C) 49 16

[#103] Which logic family dissipates the minimum power?
Correct Answer

(D) CMOS

[#104] What logic function is obtained by adding an inverter to the inputs of an AND gate?
Correct Answer

(B) NAND

Explanation

Solution: When you add an inverter (NOT gate) to the inputs of an AND gate, you create a logic gate known as a NAND gate . The NAND gate performs the logical AND operation on its inputs and then negates (inverts) the output. In other words, it gives the opposite result of an AND gate. The truth table for a 2-input NAND gate is as follows: A B Output 0 0 1 0 1 1 1 0 1 1 1 0 As you can see, the output is 1 for all input combinations except when both inputs are 1. Therefore, the correct answer is Option B: NAND .

[#105] A bus is a group of _____ carrying digital signals.
Correct Answer

(A) wires