paper tape

n. narrow strip of paper; (Computers) narrow strip of paper in which holes are perforated in designated patterns representing characters, punched tape (was used as storage medium in the early 1900's); roll of paper tape used in calculating machines and cash registers

Punched tape or paper tape is a largely obsolete form of data storage, consisting of a long strip of paper in which holes are punched to store data. It was widely used during much of the twentieth century for teleprinter communication, and later as a storage medium for minicomputers and CNC machine tools.
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Noun
1. a long narrow strip of paper
(hypernym) paper

<hardware, history> 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)

paper-tape
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