Vocab pt2

The central processing unit that is generally made from a

single integrated circuit.

• NTC Resistor

• Normally Open

• Microprocessor

• Photocell

The contact of a relay that is closed when the coil is de-energized.

• Normally Closed

• Normally Open

• Output

• Open Loop System

The contact of a relay that is open when the coil is de-

energized.

• Normally Open

• Sensor

• Reed Switch

• Programmable Logic

  Controller

A negative temperature coefficient, also known as a

thermistor, is a sensitive resistor whose primary function is to

exhibit a change in electric resistance with a change in

temperature.

• Microprocessor

• Photocell

• NTC Resistor

• Output

A control circuit in which the system output has no effect on

the control.

• Normally Closed

• Polarity

• Photocell

• Open Loop System

The information produced by a computer.

• reed switch

• NTC Resistor

• output

• Sensor

A photo-Sensitive resistor whose resistance decreases as the light striking the unit increases

• Photocell

• Polarity

• Open Loop System

• Sensor

The type of charge an atomic particle has.

• Normally Open

• Sensor

• Potentiometer

• Polarity

A switch that can provide variable motion control. It can vary

the resistance within the switch, which affects both the

current and voltage flowing out of the switch.

• Programmable Logic

  Controller

• Reed Switch

• Potentiometer

• Sensor

A specialized heavy-duty computer system used for process

control in factories, chemical plants, and warehouses. Closely

associated with traditional relay logic. Also called a

programmable controller (PC).

• Sensor

• Microprocessor

• Programmable Logic

  Controller

• NTC Resistor