Sequential engine function control system

A system for actuating sequential engine function transducers such as fuel injector solenoids comprising a plurality of switch nodes equal in number to the number of cylinders of the engine. Each switch node includes a high current switch such as a transistor and an individually addressable driver circuit for causing the transistor to conduct when an address unique to the driver is received. The nodes are preferably disposed in close physical proximity to the injector solenoids. Low current address carrying lines are connected between the address generator and the individual switch drivers to activate them in sequence. Only a single high voltage high current supply line need be provided. The transducers may also be intake and/or exhaust valve actuators or spark ignition devices.