HID controller
The HID controller (Human Interface Devices) is a component suite, which gives complete access to HID devices. Handles all devices which are in the HID subclass of USB. You will also find nice Delphi tricks like a private constructor. Compatible with Delphi 4 to 6 and BCB (tested with BCB 6 Trial). Runs on all Windows versions from Windows 95 on. Even on Windows 95 and Windows NT which have no USB support. It only never finds HID devices there.
esta en la pagina http://www.soft-gems.net/Controls.php
si trabajas en esto me gustaria estar comunicado, quiero conectar un microcontrolador con la pc para tomar informacion....