Logic Gates and Their Functions

This video tutorial explains how to build logic gates using transistors. It covers the construction and operation of NAND, AND, OR, and NOR gates. The video provides detailed circuit diagrams and truth tables for each gate, illustrating how transistors can be used to create these fundamental components of digital electronics.

What is the primary function of a logic gate in a circuit?

• To perform logical operations

• To amplify signals

• To convert AC to DC

• To store data

Which logic gate is represented by a series connection of transistors?

• OR

• XOR

• NOR

• AND

In a NAND gate, what is the output when both inputs are high?

• High

• Low

• Undefined

• Same as input

What is the Boolean expression for a NAND gate?

• A * B

• (A * B)'

• A + B

• A * B'

How does the AND gate differ from the NAND gate in terms of output when both inputs are high?

• Both output low

• Both output high

• AND gate outputs high, NAND outputs low

• AND gate outputs low, NAND outputs high

What is the output of an OR gate when both inputs are low?

• Low

• Same as input

• Undefined

• High

Which logic gate can be created by connecting transistors in parallel?

• XOR

• AND

• NAND

• OR

In a NOR gate, what happens to the output if one of the inputs is high?

• Output becomes high

• Output remains low

• Output matches the input

• Output is undefined

Which logic gate is characterized by having a high output only when both inputs are low?

• NAND

• OR

• AND

• NOR

What is the main difference between OR and NOR gates in terms of output?

• OR outputs high if any input is high, NOR outputs low

• Both output high if any input is high

• OR outputs low if any input is high, NOR outputs high

• Both output low if any input is high