three-channel transmission system
51Number Five Crossbar Switching System — The Number Five Crossbar Switching System or 5XB switch, designed by Bell Labs and made by Western Electric, was in use in Bell System telephone exchanges from 1948 to the 1980s. Its principal use was as a Class 5 telephone switch, though… …
52Universal Mobile Telecommunications System — (UMTS) is one of the third generation (3G) cell phone technologies, which is also being developed into a 4G technology. Currently, the most common form of UMTS uses W CDMA as the underlying air interface. It is standardized by the 3GPP, and is… …
53Personal Handy-phone System — The Personal Handy phone System (PHS), also marketed as the Personal Access System (PAS) and commercially branded as Xiaolingtong (小灵通) in China, is a mobile network system operating in the 1880–1930 MHz frequency band, used mainly in Japan,… …
544Matic — is the name of an AWD four wheel drive system developed and used by Mercedes Benz. It is good for driving through slippery terrain.Almost all their vehicles featuring this system also have an automatic transmission in standard equipment (except… …
55telecommunication — [tel΄ə kə myo͞o΄ni kā′shən] n. [also pl., with sing. or pl. v.] communication by electronic or electric means, as through radio, telephone, telegraph, television, or computers * * * tel·e·com·mu·ni·ca·tion (tĕlʹĭ kə myo͞o nĭ kāʹshən) n. 1. The… …
56Media and Publishing — ▪ 2007 Introduction The Frankfurt Book Fair enjoyed a record number of exhibitors, and the distribution of free newspapers surged. TV broadcasters experimented with ways of engaging their audience via the Internet; mobile TV grew; magazine… …
57Digital terrestrial television — List of digital television broadcast standards DVB standards (Europe) DVB S (satellite) DVB S2 DVB T (terrestrial) DVB T2 DVB C …
58education — /ej oo kay sheuhn/, n. 1. the act or process of imparting or acquiring general knowledge, developing the powers of reasoning and judgment, and generally of preparing oneself or others intellectually for mature life. 2. the act or process of… …
59Business and Industry Review — ▪ 1999 Introduction Overview Annual Average Rates of Growth of Manufacturing Output, 1980 97, Table Pattern of Output, 1994 97, Table Index Numbers of Production, Employment, and Productivity in Manufacturing Industries, Table (For Annual… …
60Stereophonic sound — Stereophonic sound, commonly called stereo, is the reproduction of sound, using two or more independent audio channels, through a symmetrical configuration of loudspeakers, in such a way as to create a pleasant and natural impression of sound… …
