Appeal No. 96-1904
Application 08/164,854
characters for each of the modes in which the keyboard may be
operated. One mode selection key affords a choice between
upper
case and lower case modes for alphabetic characters, and the
other can select the edit/PF (programmable function) mode or
special/numeric character mode. As seen in Figure 1, a single
key performs alphabetic and numeric functions.
The Leipzig reference teaches a keyboard with 13
keys, as shown in the sole figure, wherein a single key
performs alphabetic and numeric functions. Three tables
reveal how each of nine keys incorporates a large number of
purposes and functions.
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