| 摘要 |
<p>PURPOSE:To provide a vehicle traveling distance recorder improved to inhibit erroneous data from being written in a nonvolatile memory. CONSTITUTION:This vehicle travelling distance recorder for using the plural recording areas of the nonvolatile memory, successively increasing the record of the plural recording areas by one every time a vehicle travels for a prescribed distance and recording traveling distance data is provided with a travelling distance calculation means 1 for calculating data D to be recorded in the nonvolatile memory and a write address P, a data read means 2 for reading the data DN of the nonvolatile memory recorded at the address P, a data judgement means 3 for judging whether or not the difference of the data D and the read data DN is '1' and a data write means 4 for writing the data D at the address P of the nonvolatile memory when judgement is YES.</p> |
