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Zenith Data Systems Corporation (ZDS) was an American computer systems manufacturing company active from 1979 to 1996.It was originally a division of the Zenith Radio Company (later Zenith Electronics), after they had purchased the Heath Company and, by extension, their Heathkit line of electronic kits and kit microcomputers, from Schlumberger in October 1979.
The Zenith Z-89 is based on the Zilog Z80 microprocessor running at 2.048 MHz, and supports the HDOS and CP/M operating systems. The US$2295 Z-89 is integrated in a terminal-like enclosure with a non-detachable keyboard, 12-inch monochrome CRT with a 80x25 character screen, 48 KB RAM, and a 5.25" floppy disk drive.
In 1979, Zenith entered the computer market with the purchase of Heath Company from Schlumberger for $64.5 million, forming Zenith Data Systems (ZDS). [17] The company changed its name to Zenith Electronics Corporation in 1984 to reflect its interests in computers and CATV, having left the radio business two years earlier. [citation needed]
Ringing is a telecommunication signal that causes a bell or other device to alert a telephone subscriber to an incoming telephone call.Historically, this entailed sending a high-voltage alternating current over the telephone line to a customer station which contained an electromagnetic bell.
The Zenith Flash-Matic was the first wireless remote control, invented by Eugene Polley in 1955. It had only one button that was used to power on and off, channel up, channel down, and mute. It had only one button that was used to power on and off, channel up, channel down, and mute.
RHA being an acronym for Reid and Heath Acoustics. [citation needed] Before 2011 Reid and Heath operated another audio company called Audio Chi [2] which was liquidated and they went on to start RHA (Reid and Heath Acoustics). [3] In 2016, designer and co-founder Thomas Heath left the company to found Scottish watchmaker anOrdain. [4]