TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

PARITY HOLE [1 record]

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Record 1 2014-12-08

English

Subject field(s)
  • Information Processing (Informatics)
CONT

The Teletype terminals had a paper tape punch (and reader). The paper tape produced an 8-bit wide set of holes and non-holes. ... The choice was to use 7 (of the available 8) holes to encode the desired character (128 available - the all null punch, hence the 127 ASCII set). The 8th hole was a parity hole (bit) so the device reading the paper tape would know if the other 7 possible holes were read in error.

French

Domaine(s)
  • Traitement de l'information (Informatique)

Spanish

Campo(s) temático(s)
  • Tratamiento de la información (Informática)
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