| 摘要 |
PURPOSE:To efficiently and exactly execute a fault inspection by a simple operator operation by providing a storage means, a detecting means, a command means and a display means. CONSTITUTION:The generation of a musical tone, a fault inspection, etc. are controlled by a microcomputer 16, and a keyboard circuit 12, a switch group 14, a central processing unit (CPU) 16, a program memory 18, a register group 20, an indicator 22, a tone generator 24, etc., are connected to a bus 10. In this state, when an operator such as a key switch, etc. is operated successively, for instance, unidirectionally (like a glissando), if there is a disconnection in one operator, operation information is not stored in a storage area corresponding to its operator, therefore, a fact that the operator is disconnected is displayed on a display means 22. Accordingly, an inspector can easily recognize which operator is disconnected by only looking at the display 22 after stroking plural operators like a glissando, and it is unnecessary to pay attention to a sounding state. In such a way, the disconnection can be efficiently and exactly inspected. |
