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Traf-O-Data
Traf-O-Data was a partnership between Bill Gates, Paul Allen, and Paul Gilbert. The objective was to read the raw data from roadway traffic counters and create reports for traffic engineers. The company had only modest success but the experience was important in the creation of Microsoft a few years later.〔(【引用サイトリンク】 publisher = New Mexico Museum of Natural History and Science ) 〕
==Traffic counting==
State and local governments frequently do traffic surveys with a pneumatic road tube traffic counter. Rubber hoses are stretched across a road and passing vehicles create air pulses that are recorded by a roadside counter. In 1970 the counts were mechanically recorded on a roll of paper tape. The time and number of axles were punched as a 16-bit pattern into the paper tape. (The standard Teletype paper tape uses only 8 bits.) Cities would hire private companies to translate the data into reports that traffic engineers could use to adjust traffic lights or improve roads.
Bill Gates and Paul Allen were high school students at Lakeside School in Seattle. The Lakeside Programmers Group got free computer time on various computers in exchange for writing computer programs. Gates and Allen thought they could process the traffic data cheaper and faster than the local companies. They recruited classmates to manually read the hole-patterns in the paper tape and transcribe the data onto computer cards. Gates then used a computer at the University of Washington to produce the traffic flow charts. (Paul Allen's father was a librarian at UW.) This was the beginning of Traf-O-Data.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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