(any switch that switches from one setting to another)
41BDSM — Not to be confused with DBMS. BDSM Aspects B D, B/D, or BD Bondage and Discipline D s, D/s, or Ds …
42TXE — TXE, which stands for Telephone eXchange Electronic, was the designation given to a family of telephone exchanges developed by the British General Post Office (GPO), now BT, designed to replace the ageing Strowger systems. When World War II ended …
43Oscilloscope — This article is about current oscilloscopes, providing general information. For history of oscilloscopes, see Oscilloscope history. For detailed information about various types of oscilloscopes, see Oscilloscope types. Illustration showing the… …
44List of Deadliest Catch episodes — This is a list of Deadliest Catch episodes with original airdate on Discovery Channel. Airdates on Discovery Channel Canada generally differ. Contents 1 Pilot 2 Season 1 3 Season 2 4 Season 3 …
45History of computing hardware — Computing hardware is a platform for information processing (block diagram) The history of computing hardware is the record of the ongoing effort to make computer hardware faster, cheaper, and capable of storing more data. Computing hardware… …
46Positive feedback — Alarm or panic can spread by positive feedback among a herd of animals to cause a stampede. Positive feedback is energy taken from the output of a system and reapplied to the input, which is phase congruent with the input signal. A system… …
47Crime SuspenStories — Cover, #1 by Johnny Craig Publication information Publisher EC Comics …
48Buck converter — A buck converter is a step down DC to DC converter. Its design is similar to the step up boost converter, and like the boost converter it is a switched mode power supply that uses two switches (a transistor and a diode) and an inductor and a… …
49Bell TV — This article is about Bell Canada s satellite TV service. For Bell s IPTV service, see Bell Fibe TV. For the Bell Canada subsidiary that operates TV channels such as CTV, see Bell Media. Bell TV Type Subsidiary of Bell Canada Ind …
50Ceiling fan — A ceiling fan is a fan, usually electrically powered, suspended from the ceiling of a room, that uses hub mounted rotating paddles to circulate air. Casablanca Fan Co. ceiling fan from the early 1980s. A ceiling fan rotates much mo …
