| 摘要 |
PURPOSE:To eliminate the need to refer to an operation manual even when the correspondence between states and functions that keys have is not stored and to reduce the danger of erroneous input by storing the correspondence between respective states and functions in a memory and displaying the functions that keys have currently on a display screen together with key names. CONSTITUTION:Working processes are rearranged by using function keys (K0-K3). When a key K is pressed at each branch point Bi (i=0-3), a different state is obtained. Respective branch points Bi are placed in respective states (shown by square marks) of rearrangement and the correspondence between the respective states and keys is stored in a RAM; and in which state the working process is monitored and the function of a key (shown by circle) corresponding to the current state is displayed on a display device. In a figure, n(square) Ki(circle) m(square) indicates a change from a state (n) to a state (m) when a key Ki is pressed. For example, keys K0 and K1 can be pressed in a state zero and the state is changed to a state one with the K0 and to a state five with K2.
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