Paper tape - Revision history

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2021-03-27T13:02:32Z

ECMA standard

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2018-12-13T15:03:19Z

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2018-10-20T02:22:44Z

Proper cat

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2017-10-14T01:03:10Z

An OK start

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'''Paper tape''' (also known as '''punched tape''') was an early form of [[secondary storage]], used primarily for input and output of data; it has been obsolete for many years.

It originated as a way of sending and receiving data via teletypes and teleprinters (effectively mechanical typewriters connected via [[serial line]]s). When early computers needed facilities for data input and output, existing punched tape machines were adapted for connection to them.

Early paper tapes had 5 rows of holes, but the final versions had 8 rows; the 5-bit versions were used with Baudot teleprinter codes, an early predecessor to [[ASCII]].

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		+	* [https://www.polyomino.org.uk/computer/ECMA-10/ ECMA Standard for Data Interchange on Punched Tape] November, 1965

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	Early paper tapes had 5 rows of holes, but the final versions had 8 rows; the 5-bit versions were used with Baudot teleprinter codes, an early predecessor to [[ASCII]].		Early paper tapes had 5 rows of holes, but the final versions had 8 rows; the 5-bit versions were used with Baudot teleprinter codes, an early predecessor to [[ASCII]].

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