Technology components

• Single pole, single throw switch is to complete a circuit for turning something on or off
• A Single Pole, Double Throw switch is used to switch between two different outputs
• A push to make switch is a momentary switch to complete the

  circuit momentarily.
• A push to break switch is a momentary switch to break a circuit momentarily
• A single cell battery is used to power a circuit
• a multi-cell battery is used to power a circuit
• a fixed resistor is used to oppose current and protect the components
• a variable resistor is used to oppose current and adjust the sensitivity of an input
• a light dependent resistor is an input component used to sense light
• a thermistor is an input component used to sense heat
• a diode only allows current to pass in one direction and it is used to protect components
• an NPN transistor is an electronic switch used to amplify current
• a loudspeaker is used to emit sound (music)
• a buzzer is used to emit sound (buzz)
• a bulb is used to emit light
• a light emitting diode is used to emit light