Keyboard for videotext terminals and editing devices

摘要

1. A key arrangement for the input of characters and their reproduction on a display screen of a videotext terminal or editing device, with a number of keys for the input of at least two characters at a time and a change-over switch for the selection of one of these two characters, characterised in that in order to connect the input keys producing graphic characters to the signal output of the keyboard, four selection keys are provided with which, when they are actuated together with the input keys, the graphic character, the character in mirror-image to this and the complementary characters to each of these can each be selected.