| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a vehicular display meter which can be shared over a plurality of kinds of vehicles with different memory constitutions.SOLUTION: A circuit board 3 of a vehicular display 1, which comprises control means 6 controlling a volatile memory 5 and foot patterns 5a, 5b, and 5c to be wired in a daisy chain manner that can selectively package at least two volatile memories 5, is provided with a series resistance between the controller 6 and the foot patterns 5a, and is provided with a foot pattern TRb that can selectively package a series resistance parting the foot pattern 5a and the foot pattern 5b so as to have a wiring length corresponding to the drive frequency of the volatile memories 5. Series termination with the foot pattern TRb opened is carried out in the case of singular package of the volatile memories 5, and the foot pattern TRb is packaged with the series resistance, and parallel termination is carried out in the case of plural package of the volatile memories 5.</p> |
