Basic Logic Functions and their Algebra

Which logic gate is used to invert the input signal in the given circuit?

• AND

• OR

• NOT

What are the two states a digital signal can have?

• A) High and Low

• B) Positive and Negative

• C) On and Off

• D) True and False

Fill in the blank: Unlike an analogue signal, a digital signal can only have one of two states: logic high (1) or logic low (___).

• 0

• 2

• -1

• 10

What must happen for the output lamp to be lit in the switch logic circuit?

• Only switch A must be closed.

• Only switch B must be closed.

• Both switches A and B must be closed.

• Neither switch needs to be closed.

Explain how the switch logic circuit works in the given diagram.

• The switch logic circuit works by opening and closing electrical connections to control the flow of current.

• The switch logic circuit works by converting electrical energy into mechanical energy.

• The switch logic circuit works by storing electrical energy for later use.

• The switch logic circuit works by amplifying electrical signals.

According to the truth table, what is the output Q when Input A is 1 and Input B is 1?

• 0

• 1

• Cannot be determined

• None of the above

How many logic states does a digital waveform have?

• 3

• 4

• 2

• 8

How many logic states does a digital waveform have?

• 3

• 4

• 2

• 8

What is the output of the AND function when both inputs A and B are 1?

• A) 0

• B) 1

• C) 2

• D) 3

Fill in the blank: The AND function will output logic 1 when all of its inputs are at logic ____.

• 1

• 0

• 2

• -1