| 摘要 |
An electronic control apparatus for engines has a memory and a processing unit. The processing unit executes various processing routines while accessing the memory in a predetermined access speed or wait-time. The routines include a rotation interrupt routine which is initiated in synchronized relation with a rotation of an engine. The memory access speed of the processing unit is set initially to a low speed, when an ignition switch is turned on to start a power supply to the processing unit. However, it is changed to a high access speed, when a rotation speed of the engine increases and a rate of execution of the interrupt routine by the processing unit increases.
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