| 摘要 |
PURPOSE:To display optionally the number of both outgoing and incoming stations and to read out the number of incoming station in absence by providing a circuit which displays the number of both outgoing and incoming stations, a circuit which connects a line with an order wire circuit and a temporary storage circuit which stores the number of the incoming station in absence. CONSTITUTION:By depressing any of numeric keys on a console 1, a matrix signal equivalent to a depressed key is inputted to a key encoder circuit 2 and is converted to a BCD code, and after it is inputted to a selector circuit 10 and is selected, the signal is displayed at an LED display circuit 12. Also the output from a shift resister circuit 3 is inputted to a BCD.binary conversion circuit 4 and is selected by a gate signal and transmits a circuit assigning signal for an order wire to an order wire control device 16. Along with the inputting of an opposite station by a binary code when receiving and a display after a conversion to a BCD code, the converted output is stored at a temporary storage memory circuit 9, and therefore, the numbers of opposite stations are displayed in order on a console by an LED by every depression of a memory.read key 15. |
