light-emitting-diode indicator
41Destination sign — An example of LED type destination signs on an AC Transit bus. On the front sign, the bottom line of text changes every few seconds to list multiple destinations along the route …
42многоцветный светодиодный индикатор — многоцветный светодиод [Интент] Тематики полупроводниковые приборы Синонимы многоцветный светодиод EN multi colored LED indicatormulticolor ledmulticolor light emitting diodemulticolour light emitting diode …
43List of engineering topics — This page aims to list all topics related to the broad field of engineering. A more compact list can be found at list of basic engineering topics. See the bottom of the page for links to lists for specific engineering disciplines or for… …
44Crystal oscillator — A miniature 4 MHz quartz crystal enclosed in a hermetically sealed HC 49/US package, used as the resonator in a crystal oscillator. A crystal oscillator is an electronic oscillator circuit that uses the mechanical resonance of a vibrating crystal …
45Fuse (electrical) — A miniature time delay fuse used to protect electronic equipment, rated 0.3 amperes at 250 volts. 1.25 inches (about 32 mm) long …
46History of the single-lens reflex camera — The history of the single lens reflex camera predates the invention of photography in 1826/27 by one and a half centuries with the use of a reflex mirror in a camera obscura first described in 1676. Such SLR devices were popular as drawing aids… …
47photography, technology of — Introduction equipment, techniques, and processes used in the production of photographs. The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …
48List of prolific inventors — Thomas Edison was widely known as the world s most prolific inventor.[1][2] He holds a total of 1,093 U.S. patents (1,084 utility patents and 9 design patents).[3] By 2005, he was passed by Japanese inventor Shunpei Yamazaki.[4] Yamazaki was… …
49GE Marc V — Listen filename=Simulated GE Mark V Call.ogg title=GE Marc V description=Hear a simulated GE Marc V call as it would sound from a mobile, (version 2). format=OggGE Marc V is a historic U.S. format or protocol of trunked, two way radio introduced… …
50Police car — Two Peel Regional Police police cars near Mississauga, Canada …
