7-bit ASCII vs. 8-bit ASCII

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1 total messages Started by kyongsok kim Wed, 12 Apr 1989 15:44

#993

Author: kyongsok kim
Date: Wed, 12 Apr 1989 15:44

28 lines
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    When 7-bit ascii code is used on 8-bit machines, I guess that the msb
(most significant bit) is set to zero.  For example, "A" is 100 0001 in 7-bit
ascii code and it will be represented as 0100 0001 on 8-bit machines.

    In some book, I found that there is a 8-bit ASCII-8 code,
which is different from the 7-bit code w/ a leading zero prefixed.
The book says that, for example, "A" is 1010 0001 and "1" is 0101 0001
in 8-ASCII code.

    My questions are:

    1) what is ASCII-8 code?  a good reference or table?
    2) is ASCII-8 different from the 7-bit ascii code w/ a leading zero
       prefixed.
    3) where is this code used?

Thanks in advance.  Please send e-mail.

Kyongsok Kim
Dept. of Comp. Sci., North Dakota State University

e-mail address:
    nukim@plains.nodak.edu
    nukim@ndsuvax.bitnet
    uunet!ndsuvax!nukim

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