56. A talking electronic apparatus comprising: memory means for storing digital speech data and digital control data from which a plurality of requests in synthesized human speech for respective operator responses and appropriate operator responses corresponding to said plurality of requests may be respectively derived, speech synthesizer means operably associated with said memory means for converting said digital speech data into audible human speech, means for selectively transferring said digital speech data to said speech synthesizer means to produce a selected audible request in human speech, operator input means for receiving an operator response to said selected audible request, means responsive to said digital control data for producing a visual display corresponding to said selected audible request and responsive to said operator input means for producing a visual display corresponding to the operator input, and means responsive to said digital control data and said operator response to said selected audible request for causing said speech synthesizer means to audibly command in human speech that the operator further respond to said selected audible request if said operator response is inappropriate.
56. A talking electronic apparatus comprising: memory means for storing digital speech data and digital control data from which a plurality of requests in synthesized human speech for respective operator responses and appropriate operator responses corresponding to said plurality of requests may be respectively derived, speech synthesizer means operably associated with said memory means for converting said digital speech data into audible human speech, means for selectively transferring said digital speech data to said speech synthesizer means to produce a selected audible request in human speech, operator input means for receiving an operator response to said selected audible request, means responsive to said digital control data for producing a visual display corresponding to said selected audible request and responsive to said operator input means for producing a visual display corresponding to the operator input, and means responsive to said digital control data and said operator response to said selected audible request for causing said speech synthesizer means to audibly command in human speech that the operator further respond to said selected audible request if said operator response is inappropriate. 57. A talking electronic apparatus according to claim 56, wherein said plurality of requests includes at least one request for an operator to spell a word in a human language and wherein said appropriate operator response comprises the correct spelling of said word.