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ASCII is a 7 bit code developed and standardized by the telegraph industry for use on teletypes as a replacement for their older Baudot 5 bit code.

The computing industry when they adopted ASCII extended it in several different nonstandard ways to an 8 bit code because after 1964 (when the IBM System 360 was introduced) the standard computer memory unit had become the 8 bit byte.

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Q: What is the difference between 7-bit ASCII and 8-bit ASCII?
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