OCR J277 - 2.4 Boolean Logic

What is the output of an OR gate if the inputs are 1 and 0?

• 0

• 1

• OFF

• 2

What is the output of an AND gate if the inputs are 1 and 0?

• ON

• 1

• 2

• 0

. 

What is the output of an NOT gate if the inputs are 1 and 0?

• 1

• 0

• OFF

• 2

A NOT gate has…

• Two inputs and one output

• One input and two outputs

• One input and one output

• Two inputs and two outputs

An OR gate has

• Two inputs and one output

• One input and one output

• One input and two outputs

• Two inputs and two outputs

The output of any logic gate can have either of two

• Gates

• States

• Inputs

• Outputs

A logic state can only be….

• On or 1

• Off or 1

• 1 or 0

• In and Out

The output of a gate is only 1 when both inputs are 1.

• OR

• NOT

• NAND

• AND

A NAND gate is the combination of which two gates

• OR and AND

• AND and NOT

• NOT and OR

• OR and NAND

Which of these is a definition of a transistor?

• A type of gate used in a CPU

• Device used to change a circuit

• Microscopic device - open/close circuits to communicate electrical signals

• Circuit components which take several inputs