| 摘要 |
<p>PURPOSE:To allow a user side to easily change a program by transmitting a changing program from a program storage circuit on the reader side to a program storage circuit on an electronic tachometer side by means of a down load system. CONSTITUTION:When a recording medium X in which a changing program is recorded is loaded to the reader A, a program change control circuit C1 allows the program storage circuit M1 to read out the changing program recorded in the recording medium X and to display the read program to a program change completion display circuit D1 at the time of completing the reading and then drives a communication circuit T1 to output a signal relating to the changing program. When the electronic tachometer A is connected to the reader A, a communication circuit T2 receives the connection and a program change control circuit C2 writes the changing program in a program storage circuit M2. At the time of completing the writing, the state is displayed on a program change display circuit D2.</p> |
