I want to control the operation of a DC electric motor through a Pc.?

common DC electric motor in the item: question Mahyar .? I want to control the operation of an electric motor to DC via a Pc I want to control the operation of a DC electric motor by way of a Pc. I know that card is needed analog to digital. But I did not map the specification, you should know that they are intended for purchase. Please help me determine and specifications to determine the respective card. I'm a novice, so I am looking for less complicated and more affordable. Please send me

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