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brianv · 04/16/08, 10:39 PM

I actually used Punched Paper Tape 30 years ago for BASIC programming.

There were 5-Bit codes that used a Shift Symbol to switch between character sets. Essentially "ESCape" Characters to switch between the two sets. So you would send a string of characters from one set, "shift", then send the string from the second set. On the Teletype receive side, sometimes the shift character would get garbled and the characters would get mixed up. A reall proficient person did not get foold by this and could read the message anyway!

On a "really humorous note", the first Digital Imager that I worked with stored its imagery on 7-track magnetic computer tape. 6-bits for data with a parity bit. It was big.

04/16/08, 10:39 PM	#3 (permalink)
brianv Erfahrener Benutzer Join Date: 03/30/06 Posts: 158	Re: Punched Tape I actually used Punched Paper Tape 30 years ago for BASIC programming. There were 5-Bit codes that used a Shift Symbol to switch between character sets. Essentially "ESCape" Characters to switch between the two sets. So you would send a string of characters from one set, "shift", then send the string from the second set. On the Teletype receive side, sometimes the shift character would get garbled and the characters would get mixed up. A reall proficient person did not get foold by this and could read the message anyway! On a "really humorous note", the first Digital Imager that I worked with stored its imagery on 7-track magnetic computer tape. 6-bits for data with a parity bit. It was big. Last edited by brianv : 04/16/08 at 10:41 PM.