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just wondering how to use some of these cnc stepper controllers with usb ? Answered

i dont have parrallel ports on my computer only usb. i would like to run a machine from my compaq presario laptop.


You say parallel in your question. Are you SURE it is parallel?  If so, you can use one of these.  (Make sure you use a full 1284 spec adaptor.)
If it is serial, use a USB to serial adaptor as Jayefuu suggests.

Oooops didn't realise he wrote parallel.  I should read questions better :D

USB to parallel adapters exist. Try one of them.

You could use a USB-RS232 convertor.... something like this perhaps. I use one similar to connect to a microcontroller I have.