A computer system for integrating several car electronic devices is proposed. The computer system is installed in a housing, which is of the standard DIN size to be installed in a car dashboard. A computer host is disposed in the housing, and can run at least an operating system or at least a software program. At least an external electronic device is connected to the computer host through a plurality of connection ports disposed on the computer host. A control panel is disposed at the front end of the housing to control the computer host. A display for displaying text or picture information is also connected to the computer host. A touch panel adhering to the display is also provided. Data can be input through contacting the touch panel. The connection ports can connect all electronic devices in a car for integrating and controlling them.