On 7/24/11 10:41 PM, Gregory Woodbury wrote: > > > On Mon, Jul 25, 2011 at 12:52 AM, yudi v <yudi.tux@xxxxxxxxx > <mailto:yudi.tux@xxxxxxxxx>> wrote: > > No it's not my homework, just curious. > I looked at that link before posting. > what confused me was the DEL key code. Usually the first 32 > characters are control characters but the wiki article clubs DEL > with the control characters where as it's assigned the last code > in the table. That's after the printable characters. > That's why I posted here to get a confirmation. > > > It's history. The DEL code was all holes punched in paper tape > (8-level) that was used to RUBOUT a character in error. > Teletype and papertape systems were programmed to ignore the 0xFF > code. When ASCII was formalized, the code for DEL > was firmly in use as a control character and papertape was still in > use. The various other "control" codes were used for various > esoteric paper tape storage methodologies and later for 8-bit wide > magnetic tape systems. > And it was carried over to 8 bit tape as well as BAUDOT (sp) code tape. Great thing too. It was also used on punch cards. Yep, I was around in those days and did a lot with paper tape and an HP-3000 BASIC computer. And one of the ways to create that code today is to use the SHIFT + BACKSPACE combination in PuTTY, at least the way I configure it. James -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
