Keyboard keys located on computer screen

Abstract From the Canadian patent

The conventional keyboard is replaced by a virtual keyboard pattern on the computer screen by this invention. Selection of keystrokes is made by a mouse, or the like positioning a cursor, at a desired key for keyswitch selection. This manner of selection of pre-formed patterns available from the computer such as alphanumeric characters and computer commands is particularly advantageous in a computer aided drafting and design system. Thus, notations and lettering need not be formulated by analog movement of the mouse, but can be selected digitally from the computer store by keyswitching. The resulting equipment therefor eliminates the conventional keyboard but not its operational advantages …