electro-, electr-, electri-

1. Instrumentation, including the speedometer, which is displayed with a digital readout rather than with the traditional analog gauges.
2. A digital instrument display for speed, miles, fuel level, fuel consumption clock, etc.

1. A worldwide U.S. Air Force network which has fixed stations, specially equipped aircraft, and reconnaissance satellites to monitor and record enemy electromagnetic emissions. 2. Technical and geolocation intelligence derived from foreign noncommunications electromagnetic radiations emanating from other than nuclear detonations or radioactive sources.
3. Electronic systems, apparatus, and operations for obtaining information concerning a military enemy's capabilities, intentions, plans, and order of battle.

1. A disturbance from nearby electrical or electromagnetic activity which causes an electronic device to function incorrectly.
2. Any electrical or electromagnetic disturbance that causes undesirable responses in electronic equipment.
3. An electric or electromagnetic disturbance which causes undesirable responses in electronic equipment.

Electric interference refers specifically to an interference that is caused by the operation of an electric apparatus which is not designed to radiate electromagnetic energy.

1. A transmitter used in the jamming of radio or radar transmissions.
2. Radiation or re-radiation of electromagnetic waves so as to impair the usefulness of a specific segment of the radio spectrum that is being used by a military enemy for communication or radar.
3. To interfere with or to prevent the clear reception of (broadcast signals) by electronic methods.

Television news reportage.

A keyboard which is used to generate characters through electronic methods rather than through mechanical linkages.

A method of keying so the dots and dashes are produced by electronic methods.

Keying is the forming of signals; such as, for telegraph transmission, by modulating a direct-current or other carrier between discrete values of some characteristic.

Keying is also defined as the shaping of a signal to convey information, known as modulation or the process of conveying a message signal, for example a digital bit stream or an analog audio signal, inside another signal which can be physically transmitted with an alternating-current source; for example, by interrupting it or by suddenly changing its amplitude, frequency, or some other characteristic.

1. An appliance used by those without vocal cords to stimulate speech through the use of an electronically controlled artificial larynx inside a tube or outside the voice box.
2. An electronically actuated substitute for the human larynx, designed for people who have lost the use of their vocal cords.

A pulse generator feeds the entire spectrum of voice frequencies into the throat through either a tube inserted into the mouth or with a small loudspeaker held against the throat.

The resulting sound waves in the throat are formed into words essentially by the normal movements of the jaws, the lips, and the tongue.

1. In a television system, a method by which a spot of light or another energy source moves along a given path by electronic means.
2. In facsimile copying, a method by which a spot on a cathode-ray tube moves across the copy by electronic actions.
3. A method that provides motion of the scanning spot along the scanning line controlled by electronic procedures.
4. Facsimile scanning in which a spot on a cathode-ray tube moves across the copy electronically while the record sheet or subject copy is moved mechanically in a perpendicular direction.

1. An instrument that picks up sound waves from an essentially private conversation and reproduces them in a form, generally on magnetic tape, that then can be used as evidence.
2. A device used to capture the sound waves of conversations originating in an supposedly private setting in a form, usually as a magnetic tape recording, which can be used against the target by anyone with negative intentions.

1. An electronic instrument used for detecting concealed metal objects; such as, guns, knives, or buried pipelines, generally by radiating a high-frequency electromagnetic field and then detecting the change produced in that field by the ferrous or nonferrous metal object that the user is looking for.
2. A portable electronic device with a search head that is swept over the ground and used to detect buried metal objects such as coins.
3. An electronic device that registers the presence of metal; used, for example, to detect metal weapons or to screen passengers at an airport.
4. An electronic tool used in the food industry to check for the presence of pieces of metal that might have accidentally gotten into food during the processing activities.

1. A security device which responds to a magnetically encoded plastic card.
2. A lock which has a magnetically coded key about the size of a credit card.

In one version, developed for hotels and motels, the lock code can be changed electronically from a central console, or a physical control panel on a computer or electronic device, as soon as a guest checks out, with a simultaneous preparation of new coded keys.

1. A method used to prevent the activation of a switch until a particular sequence of signals is received by the circuit.
2. A technique for preventing the operation of a switch until a specific electrical signal (the unlocking signal) is introduced into circuitry associated with the switch.

Usually, but not necessarily, the unlocking signal is a binary sequence.

The record or log of an oil or gas well borehole that is obtained by lowering a radiation counter into the hole and measuring the gamma-ray emissions of the rock formations traversed or passed across, over, or through.

A Geiger-Mueller is a counter in a watertight container, which is lowered into a borehole to log the intensity of the gamma rays produced by radioactive substances in traversed rock or across a thin section of stone.