These type of devices receive and external signal.

• Input

• Process

• Output

They're often sensors - components that convert a specific type of energy into an electrical signal.

• Input

• Process

• Output

A switch is an example of what type of device?

• Input

• Process

• Output

Thermistors and LDRs (also known as types of variable resistors) are examples of what type of device?

• Input

• Process

• Output

A thermistor detects a change in what?

• Light

• Temperature

• Sound

• Pressure

An LDR detects a change in what?

• Light

• Temperature

• Sound

• Pressure

These type of devices make all the decisions in an electronic system.

• Input

• Process

• Output

An IC (integrated circuit) is an example of what type of device?

• Input

• Process

• Output

A microcontroller is an example of what type of device?

• Input

• Process

• Output

This type of device determines how the system responds to an signal.

• Input

• Process

• Output