Logic Gates and Digital Design Lesson 1

What is the output of a buffer?

• The complement of the input

• The same as the input

• The inverted input

• Always 0

What is another name for an inverter?

• Buffer

• AND gate

• NOT operation

• XOR gate

In an AND gate, under what condition is the output true?

• When any input is true

• When all inputs are true

• When all inputs are false

• When some inputs are false

How does a NAND gate differ from an AND gate?

• Its output is inverted

• It requires more inputs

• Its output is always false

• It operates on single inputs only

What is the output condition of an OR gate?

• When all inputs are true

• When at least one input is true

• When no inputs are true

• When the output is inverted

What is the main difference between a NOR gate and an OR gate?

• NOR gate output is inverted

• OR gate has more inputs

• NOR gate output is always 1

• OR gate operates on a single input

When is the output of an XOR gate true?

• When all inputs are the same

• When inputs are different from one another

• When no inputs are provided

• When inputs are complemented

How does an XNOR gate differ from an XOR gate?

• XNOR gate output is always 1

• XNOR gate output is inverted

• XNOR gate has more inputs

• XNOR gate operates on single inputs

What is a truth table used for in logic circuits?

• To list input combinations and their corresponding outputs

• To minimize logic expressions

• To draw logic diagrams

• To invert logic gates

What does a logic diagram represent?

• A table of input combinations

• An equation that describes circuit functionality

• Gates and symbols representing a Boolean expression

• A graphical map for logic minimization