Thanks,I'll try parallel I/O (printer port).
is very good. I think to try program when hardware(link HU to PC) is success.
I test hardware like below, I wish can get data at PC when HU power on.
Thanks for your help.
Sorry for my badly English.
I got a HU like this.I prepare use it as a audio amplifier of my PC.
I know there are several methods can do it:
Can I use the right rear connector connect to PC RS232?
---------------------------
| 1 2 3 4 5 6 7 8 |
| 9 10 11 12 13 14 15...