| 摘要 |
PURPOSE:To provide the compact self-diagnostic display device on a LAN board capable of decreasing the cost of the LAN board. CONSTITUTION:The system is provided with a connector 13 connected with the address/data bus of the LAN board with the self-diagnostic function, an address decoder 15 identifying the addressing from the CPU of the LAN board through the connector 13, latch circuit 16 latching the data from the CPU through the connector 13, and LED drive circuit 17 to display the latched data on the LED 18. Thus, the system can be remarkably made compact as a self- diagnostic device, besides the cost of the LAN board itself can be decreased. |
