| 摘要 |
An electronic equipment system includes a housing 20 and a plurality of modules 31 to 35, which are removably built in and fixed to the housing 20. The modules 31 to 34 includes a liquid crystal display 31a; a graphic control circuit 32a1 and a navigation control circuit 32a2; an MD unit 33a; and a CD unit 34a, respectively. The module 35 is formed through integration of control sections, such as constant-voltage circuits for power supply, which achieve a function that is common among the graphic control circuit and the navigation control circuit, the MD unit, and the CD unit. Thus, it becomes possible to replace only necessary one among the modules 31 to 34, thereby reducing cost necessary for upgrading of the system.
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