Dual-tone multi-frequency — (DTMF) signaling is used for telephone signaling over the line in the voice frequency band to the call switching center. The version of DTMF used for telephone tone dialing is known by the trademarked term Touch Tone (canceled March 13, 1984),… … Wikipedia
Dual-modulus prescaler — A dual modulus prescaler is an electronic circuit used in high frequency synthesizer designs to overcome the problem of generating narrowly spaced frequencies that are nevertheless too high to be passed directly through the feedback loop of the… … Wikipedia
Dual Edge Snowboard — The Dual Edge Snowboard (DES) is a technical categorization of a general snowboard concept and technology, where a device or mechanism creates two simultaneously ridden edges for a snowsport equipment that allows the user to ride in a similar… … Wikipedia
Dual-tone multi-frequency signaling — One of the few production telephone DTMF keypads with all 16 keys, from an Autovon Telephone. The column of red keys produces the A, B, C, and D DTMF events. Dual tone multi frequency signaling (DTMF) is used for telecommunication signaling over… … Wikipedia
Stroke ratio — In a reciprocating piston engine, the stroke ratio, defined by either bore/stroke ratio or stroke/bore ratio, is a term which is used to describe the ratio between the diameter of the cylinder bore and the length of the piston stroke within its… … Wikipedia
Financial ratio — Corporate finance … Wikipedia
Compression ratio — For compression ratio in data compression, see data compression ratio. The compression ratio of an internal combustion engine or external combustion engine is a value that represents the ratio of the volume of its combustion chamber from its… … Wikipedia
P/B ratio — The price to book ratio, or P/B ratio, is a financial ratio used to compare a company s book value to its current market price. Book value is an accounting term denoting the portion of the company held by the shareholders; in other words, the… … Wikipedia
Active Valve Control System — (AVCS) is an automobile variable valve timing technology used by Subaru. It varies the timing of the intake valves by using hydraulic oil pressure to rotate the camshaft in order to provide optimal air flow in and out of the engine. The system is … Wikipedia
Infiniti Q45 — Infobox Automobile generation name = Infiniti Q45 manufacturer = Infiniti parent company = Nissan production = 1990 2006 assembly = Tochigi, Tochigi, Japan class = Full size luxury car body style = 4 door sedan layout = FR layout aka = Nissan… … Wikipedia
Zweikanalton — ( two channel sound , A2 Stereo) is a television sound transmission system used in Germany and other countries. It relies on two separate FM carriers. This offers relatively high separation between the channels (compared to a subcarrier based… … Wikipedia