Information indicating traveling states such as a traveling speed SPD is recorded in a computer for engine control. The recorded information can be read out using a self-diagnostic function after stopping of a vehicle. By a simple operation of grounding a certain terminal, it can also be displayed simply by blinking of a CE lamp. Since the record with high reliability remains, use can be made as materials on fair regulation.

 
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< Device for operating a short arc discharge mercury lamp

< Backlight assembly with frame housing comprising a guide portion for guiding the light unit wires and liquid crystal display device having the same

> Electric discharge lamp

> Direct-type back light device

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