| 摘要 |
<p>PURPOSE:To actuate at one time plural systems on the same bus line and to easily extend a calling system by providing an address to each display device and at the same time setting the address of the display device used for calling at a window device. CONSTITUTION:When a system is started, a CPU 10 performs the set-up processing. At the end of this processing, an order ticket where the 1st No is printed is discharged to a ticket slit 11 of a ticket vendor 1. When a customer takes the ticket out, the sale of the ticket is decided and 1 is added to a waiting person number register. At the same time, the display of a waiting person number display device 32 is updated. Then 1 is added to the card No in a final No register, and a new order ticket is printed and discharged to the slit 11. When a call switch 21 is turned on, 1 is added to a call No register and 1 is subtracted from the waiting person number register. Then the display of the device 32 is updated. An address register is retrieved and the address of a display device 3 which receives data is confirmed. These data are sent to the devices 2 and 3 to display them there. Then an access is given to a voice board 54 for transmission of the voice signals.</p> |
