Abstract: The invention presents a system of a static routing path for a redundancy ring in an Ethernet network and a method thereof. Meanwhile the method includes the steps of a) providing plural switches connected with each other to form communication links, wherein each of the plural switches has a forwarding device disposed therein for forming a static routing path; b) defining one of the plural switches as a root switch; c) issuing a topology change notification (TCN) packet and transmitting the TCN packet via the static routing path while another one of the plural switches has a failure in the communication links; d) receiving the TCN packet by the root switch; and e) issuing a topology change acknowledge (TCA) packet and transmitting the TCA packet to each of the plural switches via the static routing path, thereby completing network redundancy in a specific network recovery time.

Abstract: A method of remote booting of a client computer in a LAN. The client computer downloads the drivers and the operating systems needed from the server through a coupled PCI network interface card. The driver is provided with a detecting program. When the client computer downloads and executes the first operating system, a hardware interrupt signal is cleared and the booting procedures can be completed successfully.

Abstract: A method of automatically refreshing the display screen of a terminal and the computer program thereof is accomplished by incorporating a subroutine for periodically polling the connection status of a terminal into a main program running on host. A polling period is set in the main program, and a software interrupt is generated to invoke the execution of a corresponding interrupt service routine when the polling period is reached. The interrupt service routine contains a polling subroutine for polling the connection status of the terminal by sending a control string to the terminal and recording the polling result. The present polling result will be compared with the previous polling result to check whether the connection status of the terminal is changed. If the connection status of the terminal is changed from off-line to on-line, a display screen refresh subroutine is executed to refresh the display screen of the terminal.