Want to send bytes of Hex Data to USB. How to do this?

I'd like to send MIDI control commands (or should I say simple Hex 0x00 strings) to a usb port. How can I achieve this?

Something not far from this project, but far simpler:

I'd like to have a set number of digital inputs that when high will give Hex 0x00 data to a USB output. 

Is this possible?