Electronic systems: inputs and outputs

LED stands for...

• Light emitting device

• Light emitting diode

• Light energy device

• light energy diode

A positive leg of an LED is called the....

• anode

• base

• cathode

• gate

The negative leg of an LED is called the....

• anode

• cathode

• base

• gate

This output device produces sound...

• 7 segment display

• buzzer

• LED

• motor

This output device can be used to display numbers...

• 7 segment display

• buzzer

• motor

• piezo sounder

This input device senses changes in light level

• LDR

• Push switch

• Slide switch

• Thermistor

This input device changes in temperature

• LDR

• Push switch

• Slide switch

• Thermistor

A LDR is a special type of

• capacitator

• driver

• resistor

• output

Piezo sounders use ________ to work

• Piezoacoustic effect

• Piezoelectric effect

• Piezosonic effect

• Piezosound effect

LDR stands for ....

• Light dependent resistor

• Light dependent resonator

• Light drawing resistor

• Light drawing resonator