いまどこ ―冒頭表示２
キーボードの2段めと3段目はなぜ互い違いになっていないの - 教えて！goo:
に答えてってな形で部分統合しようかナとも思う。
http://blog.goo.ne.jp/raycy/e/c11db5b33d4a1d67900e568ab0dc6273ではちょっとスレ違うと思う。
http://www6.atpages.jp/~raycy/Q/ を http://www6.atpages.jp/raycy/blog2btron/door やらの作業経過を取り入れつつ、ふくらませるようなかんじで、、
http://www6.atpages.jp/~raycy/Q/ を http://www6.atpages.jp/raycy/blog2btron/door やらの作業経過を取り入れつつ、ふくらませるようなかんじで、、
”typebar basket”
IBM Typewriter Innovation
Fixed-cycle operation
The SELECTRIC Typewriter, in contrast to typebar typewriters, was designed to operate with a fixed machine cycle. This made possible a more reliable and smoother operating machine because the timing of events was not in the hands of the operator but under control of a camshaft that ran one cycle for each character printed. While this design provided a predictable print cycle time, it wasn’t a complete answer. Because typists have a tendency toward irregular typing rhythms, the SELECTRIC needed a means to smooth out speed bursts. Without this, the SELECTRIC Typewriter would experience misselection, haracter drop-out, or even machine damage. This problem was solved by designing keylever interlocks. When a keylever was depressed, all others were inhibited until after the start of the decision-making cycle. Then, a second keylever could be depressed and held in storage until the first print cycle was complete. Thus most operator speed bursts could be accommodated and proper operation ensured.
http://www.wisconsinhistory.org/highlights/archives/2007/03/typewriter.asp
Highlights at the Wisconsin Historical Society
Highlights at the Wisconsin Historical Society
Highlights Archives
The First Typewriter ― Invented in Wisconsin
http://www.wisconsinhistory.org/wmh/archives/search.aspx
Wisconsin Magazine Of History Archives
Wisconsin Magazine Of History Archives
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