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DAQ

Utah's Division of Air Quality that flows through a photosensitive device in the absence of light.

Darlington Pair

Two transistors electrically connected to form an amplifier permitting a small amount of current flow to control a larger current flow ( an electronic relay). Named for Sidney Darlington, a physicist at Bell Laboratories from 1929 to 1971.

Dash

1. A short term for dashboard. 2. A short race, usually about six laps.

Dash Components

Accessories, such as the air conditioner and/or heater, that are mounted on the firewall in the engine compartment.

Dash Control Valve

Hand-operated valves located on the dash, such as parking-brake valves, tractor-protection valves, and differential locks.

Dash Cover

an installed dash coverA restyling product that protects a vehicle's dash from cracking, warping and fading caused by exposure to the sun. A dash cover also can reduce glare or distracting dash reflections on a windshield.

Dash Series

A NASCAR race series for four-cylinder, subcompact cars.

Dashboard

The section immediately behind the windshield that houses the instruments, accessory controls, and glove box.

Dashboard Dress-up Kit

A styling accessory that attaches to a vehicle's dashboard to make it look more sophisticated, more high-tech or just plain different. A wide variety of woodgrain dash kits are available, as are kits made from other materials, including carbon fiber and stainless steel. Kits come in a variety of colors, and many are available with matching door trim kits. Most kits attach to the dash using special tape

Dashpot

A device found on the carburetor that prevents a fast-closing throttle action.

Dashpot Timer

A device using a piston moving through a liquid to produce a time delay.

Data

Information specifically in digital format that is operated on by the micro possessor and produces an output.

Data Base

Any collection of data organized for accessing and retrieving.

Data Bus

A collection of wires through which data is transmitted from one part of the computer to another or from one computer to another.

Data Line

A scan tool transmission line designed to read sensor values and fault codes read from the RAM memory not directly from the circuit.

Data Link

A device in a computer system that sends and receives digital signals.

Data Link Connector (DCL)

The vehicle connector that allows the scanner to interface with the vehicles PCM. In OBD-II vehicles the DLC must be located on the left hand side of the passenger compartment in view of the service technician.

Data Processing

The handling of information in a series of prescribed operations such as adding, moving, perform logic, input, output, read, write, etc, to achieve a desired result.

Data Processor

A device that is capable of performing data operations, such as a microcomputer.

Datum Point

The starting point for measuring an object.