| 摘要 |
PURPOSE:To eliminate useless operation and to attain efficient work, by providing a lock mechanism to a program function key and locking keys not used for a job program selected by the operator. CONSTITUTION:A keyboard KB is provided with a lock mechanism PFKLM which prevents the depression of program function keys PFK not used for a job program selected by the operator, and a drive device M driving the lock mechanism. When the operator selects a job program, a processor PU of an input device drives the lock section of the device M and prevents the keys PFK not used for the selected job program from being depressed. |
