Typewriter the first major typewriter with these features. However, older "nonvisible" models continued in production to as late as 1915. A significant innovation was the shift key, introduced with the Remington No. 2 in 1878. This key physically "shifted" either the basket of typebars, in which case the typewriter is described as "basket shift", or the paper-holding carriage, in which case the typewriter is described as "carriage shift". Either mechanism caused a different portion of the typebar to come in contact with the ribbon/platen. The result is that each typebar could type two different characters, cutting the number of keys and
Not a typewriter replaced with the more general ioctl (I/O control) call, the "ENOTTY" error code was retained. "Typewriter" was what early Unix systems called a terminal. This usage goes all the way back to the First Edition of the Unix Programmer's Manual, dated November 3, 1971. For example, the description of the "hup" command was "hup hangs up the phone on the typewriter which uses it." The abbreviation TTY, which occurs widely even in modern UNIX systems, stood for "Teletype." The generic term "typewriter" was probably used because "Teletype" was a registered trademark of AT&T subsidiary Teletype Corporation and was too specific.