Synchronous switching module for display function and touch function

The utility model provides a synchronous switching module with a display function and a touch function, which is used for realizing the switching between two paths of DVI video signals of a double-backup ruggedized computer and the switching between two paths of RS232 serial port signals. Switching between the two paths of DVI video signals and switching between the two paths of RS232 serial port signals are synchronous, stabilizing circuits are designed for the two paths of DVI video signals before switching, and driving circuits are designed for the switched DVI signals. According to the module, the DVI video display and the RS232 communication of the dual-backup ruggedized computer are synchronously switched, so that the touch function can be used by utilizing the RS232 communication while the DVI display is switched, the convenience and the operability of the dual-backup ruggedized computer are greatly improved, the diversity of functions is expanded, and the application range of the dual-backup ruggedize