Dumb terminal support was instead provided via terminal control units, e.g. IBM 270x (see IBM 3705) or Memorex 1270, that would assemble a line of characters (up to a fixed maximum length) until the ENTER key was pressed.
Dumb terminal support was instead provided via terminal control units, e.g. IBM 270x (see IBM 3705) or Memorex 1270. These asynchronous terminal controllers assembled a line of characters, up to a fixed maximum length, until the RETURN key was pressed.