int DIGITALSetup(int io, char direction);       // Set IO line [1..16] to i-n/o-ut/I-n pull-up/J-n pull-down
int DIGITALRead(int io);                        // Read and return individual input line [1..16]
int DIGITALReadAll(void);                       // Read and return all 16 io lines
int DIGITALWrite(int io, int state);            // Write individual output [1..16] to 0 or 1
int ANALOGRead(int channel);                    // Read analog channel [1..8]
int ANALOGVoltage(void);                        // Read analog supply voltage in [Volt/100]