External hardware that connects to I/O devices such as sensors, motors, monitors, machines, etc. can be connected to the invention via I/O boards that receives and transmit {HEAD ~ digital signals}, representing {TAIL ~ control information}, to the bus 
External hardware that connects to I / O devices such as sensors , motors , monitors , machines , etc . can be connected to the invention via I / O boards that receives and transmit { HEAD ~ digital signals } , representing { TAIL ~ control information } , to the bus
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