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The TV Typewriter was a video terminal that could display two pages of 16 lines of 32 upper case characters on a standard television set. The Don Lancaster design appeared on the cover of ''Radio-Electronics'' magazine in September 1973. The magazine included a 6 page description of the design but readers could send off for a 16 page package of construction details. ''Radio-Electronics'' sold thousands of copies for $2.00 each. The TV Typewriter is considered a milestone in the home computer revolution along with the Mark-8 and Altair 8800 computers.〔 "A giant step toward the realization of the personal-computer dream happened in 1973, when Radio Electronics published an article by Don Lancaster that described a 'TV Typewriter'."〕〔"One influential project was the TV-Typewriter, designed by Don Lancaster and published in ''Radio-Electronics'' in September 1973."〕 Sometimes the term was used generically for any interactive computer display on a screen; until CRT displays were developed, the teleprinter was the standard output medium. == TVT I== Don Lancaster was an engineer at Goodyear Aerospace designing a high resolution video display for the military. Don was also a prolific author of hobbyist projects for ''Popular Electronics'' and ''Radio-Electronics'' magazines. The video project gave Don the inspiration for his most influential project, a low cost video terminal known as the TV Typewriter. The design used TTL digital logic and shift register memory. (Microprocessors and RAM were new and very expensive.) With professional terminals costing over $1000 this $120 kit looked like a bargain. Southwest Technical Products sold the set of bare circuit boards for $27 and the eight major integrated circuits for $49.50. The hobbyist had to acquire the rest of the components on their own. In the November issue, the editors apologized for the delays in shipping the TV Typewriter booklets to the thousands of readers that ordered them. They also listed electronics parts sources for the difficult to find components. Don Lancaster also answered a series of reader questions and gave ideas for additional functions and uses for the TV Typewriter. The December issue had a page of corrections for the TV Typewriter booklet. Both of the notices were included in later printings of the booklet. The compact design and complex circuitry made the TV Typewriter a challenging project for hobbyists. But many finished the project and some even connected it to their Intel 8008 based computers. The April 1975 issue of the ''Micro-8 Newsletter'' has 6 pages of user modifications and interface designs to connect the TV Typewriter to Mark-8 or SCELBI computers. The original TV Typewriter design did not include a serial interface, modem connection, or offline data storage on cassette tape. Don Lancaster wrote about these in the September 1975 issue of ''BYTE'' magazine and his TV Typewriter Cookbook. A serial interface board designed by Roger Smith was published in the February 1975 issue of ''Radio Electronics''. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「TV Typewriter」の詳細全文を読む スポンサード リンク
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