manually-operated telephone system
81Toilets in Japan — There are two styles of toilets commonly found in Japan.cite web|url=http://www.links.net/vita/trip/japan/toilets/|title=Japan: Toilets|author=Justin Hall|first=Justin|last=Hall|accessdate=2006 10 30] cite web|url=http://www.japan… …
82Type 052C destroyer — The Type 052C destroyer (NATO code name Luyang II class, often referred to as Lanzhou class after the lead ship name) is a class of destroyer built by the People s Republic of China. Two Type 052C (Lanzhou class) air defence missile destroyers… …
83History 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… …
84Armament of the Iowa class battleship — The armament of the engaged the Imperial Japanese Navy battlecruiser Kirishima at a range of convert|18500|yd|m| 2 at night.cite book | last = Mindell | first = David | title = Between Human and Machine | publisher = Johns Hopkins | date = 2002 | …
85Assistive technology — (AT) is a generic term that includes assistive, adaptive, and rehabilitative devices for people with disabilities and includes the process used in selecting, locating, and using them. AT promotes greater independence by enabling people to perform …
86Pipe organ — This article is about organs that produce sound by driving wind through pipes. For an overview of related instruments, see Organ (music). The pipe organ in Saint Germain l Auxerrois, Paris[1] The pipe organ is a musical instrument …
87Automatic meter reading — [ smart meter ( [http://www.elstermetering.com/en/1914.shtml Elster REX type R15] ) with 900MHz mesh network topology for AMR] Automatic meter reading, or AMR, is the technology of automatically collecting data from water meter or energy metering …
88Battersea Park rail crash (1937) — infobox UK rail accident title= Battersea Park rail crash date= 2 April 1937 location= Battersea Park railway station line = South London Line cause= Signalling error trains= 2 pax= 350 400 deaths= 10 injuries= 7The Battersea Park rail crash… …
89Signals intelligence — SIGINT redirects here. For the UNIX signal, see SIGINT (POSIX). RAF Menwith Hill, a large site in the United Kingdom, part of ECHELON and the UK USA Security Agreement. Signals intelligence (often contracted to SIGINT) is intelligence gathering… …
90Automatic gain control — (AGC) is an adaptive system found in many electronic devices. The average output signal level is fed back to adjust the gain to an appropriate level for a range of input signal levels. For example, without AGC the sound emitted from an AM radio… …
