Variable-Length Case Shift and Alternate Mode Selection Using Single Shift Key
Original Publication Date: 1984-May-01
Included in the Prior Art Database: 2005-Feb-04
This method of shift selection enables a keyboard operator to select a case shift for a single character or a chosen succession of characters, or shift to an alternate set of key symbols, by the use of only one shift key, thereby making available for other purposes the additional keys that ordinarily would be involved in performing these various shift functions. Alphanumeric keyboards customarily include several shift keys. At least one shift key is provided for enabling the operator to select between upper case and lower case characters. When this key is depressed into its lower position, the character then being entered from the keyboard is a capitalized or upper case character.