Hello,

Im new to VB 2005 and I would like to know how to make the dc motor accelerate when I press the "a" key and decelerate when I press the "d" key and spacebar to make it to stop. Lets say for example I have 3 speed mode(1,2, and 3), if I press the "a" key twice it will go to number 3 speed and if I press the "d" key one, it will go to number 2 speed, pressing "d" again will go back to 1 speed and finally, pressing spacebar will stop the motor. Im using SCR as controller and pin 2-9 of the parallel port to interface with pc.

Thanks in advance!