Analysis of information sources in references of the Wikipedia article "ASCII" in English language version.
In addition, it defines codes for 33 nonprinting, mostly obsolete control characters that affect how the text is processed.
There was the change from 1961 ASCII to 1968 ASCII. Some computer languages used characters in 1961 ASCII such as up arrow and left arrow. These characters disappeared from 1968 ASCII. We worked with Fred Mocking, who by now was in Sales at Teletype, on a type cylinder that would compromise the changing characters so that the meanings of 1961 ASCII were not totally lost. The underscore character was made rather wedge-shaped so it could also serve as a left arrow.
Using a "new-line" function (combined carriage-return and line-feed) is simpler for both man and machine than requiring both functions for starting a new line; the American National Standard X3.4-1968 permits the line-feed code to carry the new-line meaning.
The transmitted code use International Telegraph Alphabet No. 2 (ITA-2) which was introduced by CCITT in 1924.
The transmitted code use International Telegraph Alphabet No. 2 (ITA-2) which was introduced by CCITT in 1924.
Using a "new-line" function (combined carriage-return and line-feed) is simpler for both man and machine than requiring both functions for starting a new line; the American National Standard X3.4-1968 permits the line-feed code to carry the new-line meaning.
