speed control of motor by parallel port

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pakiboy

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I want to vary the speed of DC motor through parallel port using C language.....
how could i do it...can any body giv me the clue of commands use in programming for speed control in C....

can body help me this is regard ...... PLZZZzzzzzzz....
 

You can buffer one of the data-lines(as the parallel port can only source a few mA of current) and then use PWM.

You can send signals to the port by writing to a port register from within your C program.

https://www.epanorama.net/circuits/parallel_output.html The above link has detailed information regarding parallel port and its control.
 

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