[mrmevan]

HI GUYS I AM NEW TO THIS SITE.I NEED TO KNOW THAT IS THERE ANY ELECTRONIC DEVICE OR SOFTWARE TO MAKE THE OUTPUT SIGNAL MAKE STRENGTH IN PARRELEL PORT.AS WE KNOW THE SIGNAL THATS OUT FROM PARREL PORT ARE NOT IN ORDER AS USB PORT.SO OUR FINISHING DESIGNS ARE NOT SMOOTH I WANT GET THEM SMOOTH.SO PLEASE TELL ME SOLUTION

[Al_The_Man]

Not sure what your problem actually is? what controller are you using? What drives etc.
Are you using any break out boards?
Al.

[dkowalcz]

In the context of CNC and bit-wise parallel port I/O like most stuff on this site, you're looking for a breakout board so weak signals are amplified for use by opto-coupled drives.

Steve Stallings at PMDX sells good ones, here's his site: PMDX.COM - Products for CNC and motion control applications

In the context of parallel port consumer hardware (like printers/plotters) you're looking for a line driver so you get farther than 25 feet away from the PC.

Here's a link to a decent line driver box that requires no extra hardware: Parallel Line Driver?Terminal, DB25 Male, Terminal Block - ME190A - Shop now - Black Box

Hope this helps...