automatic timing advance mechanism
41Zilog Z80 — One of the first Z80 microprocessors manufactured; the date stamp is from June 1976. Produced 1976 Common manufacturer(s) Zilog …
42History of radar — The history of radar starts with experiments by Heinrich Hertz in the late 19th century that showed that radio waves were reflected by metallic objects. This possibility was suggested in James Clerk Maxwell s seminal work on electromagnetism.… …
43Steam locomotive — A steam locomotive is a locomotive powered by steam. The term usually refers to its use on railways, but can also refer to a road locomotive such as a traction engine or steamroller.Steam locomotives dominated rail traction from the mid 19th… …
44Lancia Delta — See also: Lancia Delta S4 Lancia Delta Lancia Delta (3rd generation) Manufacturer Lancia Production …
45Collapse of the World Trade Center — Coordinates: 40°42′41.12″N 74°00′44.00″W / …
46insurance — /in shoor euhns, sherr /, n. 1. the act, system, or business of insuring property, life, one s person, etc., against loss or harm arising in specified contingencies, as fire, accident, death, disablement, or the like, in consideration of a… …
47Closed captioning — Jack Foley created the CC in a TV symbol while senior graphic designer at WGBH. Closed captioning is the process of displaying text on a television, video screen or other visual display to provide additional or interpretive information to… …
48Mexican general election 2006 controversies — Mexico This article is part of the series: Politics and government of Mexico …
49motion picture, history of the — Introduction history of the medium from the 19th century to the present. Early years, 1830–1910 Origins The illusion of motion pictures is based on the optical phenomena known as persistence of vision and the phi phenomenon. The first …
50Embedded system — Picture of the internals of an ADSL modem/router. A modern example of an embedded system. Labelled parts include a microprocessor (4), RAM (6), and flash memory (7). An embedded system is a computer system designed to do one or a few dedicated… …
