Front

Alternating Current (AC)

Back

Current flow that changes direction periodically.

Front

analog signal

Back

An analog signal is data or a value represented by a continuously variable electrical signal.

Front

central processing unit (CPU)

Back

A component in a computer that receives sensor data, analyzes it, and sends out orders to actuators to perform tasks.

Front

Commissioning

Back

The process of confirming, testing, and starting up new devices.

Front

Corrective Maintenance

Back

The process of repairing a device after a failure has already occurred.

Front

Digital Signal

Back

An electrical signal consisting of two states: either ON or OFF.

Front

Direct current (DC)

Back

Current flows in only one direction.

Front

Direct Digital Control (DDC)

Back

A type of closed-loop control system that uses microprocessors connected to sensors and actuators.

Front

Downloading

Back

The process of copying programs or information to a computer.

Front

Electrically Erasable Programmable Read-Only Memory (EEPROM)

Back

A type of memory that can be erased and reprogrammed. An EEPROM chip on a computer board is a type of read-only memory (ROM).