| 摘要 |
PROBLEM TO BE SOLVED: To enhance operability of a plurality of operation keys while reducing consumption power.SOLUTION: In an operation display device 1, when one of a plurality of operation keys including function keys 11a to 11d of a function selection unit 11, keys of a ten-key unit 12, and keys 13a to 13c of a function operation instruction unit 13 of a key input unit 5 is operated, among LEDs for lighting the operation keys, respectively, based on a given function determined by operation of the one operation key, an LED corresponding to an operation key to become a next operation object is caused to emit light during a given period of time in a special light emission state so as to be discriminable from the other keys. |
