Dictionary memory with visual scanning from a selectable starting point

Abstract

A portable electronic typewriter having a memory incorporating a low-cost spelling-check dictionary and including a multi-character display. The typewriter is operable in a 'List' mode according to which the operator can call up display of a portion of the dictionary, sequentially in alphabetical order and one word at a time. The display consists of each stored word sharing an initial set, or 'string', of n characters (termed a 'template') defined by the operator via the keyboard of the typewriter. In a preferred version, when the typist becomes aware of uncertainty as to spelling, the List Mode may be initiated either before or after partial entry of the desired word. In particular, if the characters entered include an erroneous one, (the typist being alerted of this by an audible alarm, for example), initiation of the List Mode thereafter causes the string to be truncated just before the erroneous character. The resultant template is appropriate for entry into the word listing of the Dictionary and display of successive words (under control of the typist), all of them beginning with the previously defined characters. When the desired word appears on the display the typist can cause that word to be added replacingly to Memory and to the printed text.