From mboxrd@z Thu Jan 1 00:00:00 1970 From: cowan@mercury.ccil.org (John Cowan) Date: Mon, 4 Aug 2014 14:28:52 -0400 Subject: [TUHS] terminal - just for fun In-Reply-To: References: <53db573b.rwfkVi3XCkWueUYL%dnied@tiscali.it> <20140801105029.58656ubc05nkkh2d@webmail.mhorton.net> <20140801203508.GF13476@mercury.ccil.org> <70C2F527-099F-4BE8-BBFB-CBCAAAEB40C0@tfeb.org> <20140802034551.GA30208@eureka.lemis.com> Message-ID: <20140804182852.GF28851@mercury.ccil.org> scj at yaccman.com scripsit: > capital letters, probably because you could > get legibility with fewer dots that way and didn't have to worry about > descenders. According to legend, Teletype's own legibility studies showed the opposite, that all lower case was far more legible in the presence poor light, a weak ribbon, dirty paper, and other noise sourcess, but this was overridden by management on the grounds that it would make it impossible to spell "God" correctly. Untrue, but amusing. > The model 33 Teletypes that were the most common terminal attached to Unix > in the early days had only a single case, as I recall, being primarily > used with paper tape with a character set closely related to the character > set used on punched cards (although with some features that eventually > become supported in ASCII). The model 33 was released in 1963 and was one of the first devices to use (the 1963 version of) ASCII. System/360 was originally supposed to use it, but the effort to make ASCII-compatible printers and card readers in time for its release was a failure. The Unix treatment of LF as newline shows, however, that you folks had model 37 TTYs; the model 33 still required CR+LF for newline. -- John Cowan http://www.ccil.org/~cowan cowan at ccil.org Schlingt dreifach einen Kreis vom dies! Schliesst euer Aug vor heiliger Schau, Denn er genoss vom Honig-Tau, Und trank die Milch vom Paradies.