翻訳と辞書 |
paper tape Punched paper tape. An early input/output and storage medium borrowed from {telegraph} and teletype systems. Data entered at the keyboard of the teletype could be directed to a perforator or punch which punched a pattern of holes across the width of a paper tape to represent the characters typed. The paper tape could be read by a tape reader feeding the computer. Computer output could be similarly punched onto tape and printed off-line. As well as storage of the program and data, use of paper tape enabled batch processing. The first units had five data hole positions plus a sprocket hole (for the driving wheel) across the width of the tape. These used commercial telegraph code ({ITA2} also known as {Murray}), Baudot code, or proprietary codes such as {Elliott} which were more programmer-friendly. Later systems had eight data holes and used ASCII coding. (2003-12-02)
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