Chapter#2: Logic Gates

All exercise S.Qs of Logic Gates of Digital Electronics for BS/MSc Physics students.

Q.1 When is the output of NAND gate LOW?

Q.2 When is the output of NAND gate HIGH?

Q.3 When is the output of NOR gate LOW?

Q.4 When is the output of NOR gate HIGH?

Q.5 Develop the truth table for a certain 3-input logic circuit with the output expression

$X=A\bar{B}C+\bar{A}BC+\bar{A}\bar{B}\bar{C}+AB\bar{C}+ABC$

Q.6 Implement the following Boolean expression as they are stated:

(a) X=ABC+AB+AC (c) X=AB(CDE)

Q.7 Develop a logic circuit that will produce a 1 on its output only when all three inputs are 1S or when all three |||||\\are 0S.

Q.8 Use NAND gates to implement each expression

(a) $X=\bar{A}+B$ (b) $X=A\bar{B}$

Q.9 Use NOR gates to implement each expression:

(a) $X=\bar{A}+B$ (b) $X=A\bar{B}$

Q.10 Develop a logic circuit with four input variables that will only produce a 1 when exactly three inoput variables are .