Add note to I/O board about it not being used (breadboard instead).
tree8a8bbf0111d522e94ace7010c7bb0c5ce7fc0da9
-rwxr-xr-x 32 .gitignore
-rwxr-xr-x 327680 2008 Spring-Summer Schedule.mpp
drwxr-xr-x - asm
drwxr-xr-x - bb
drwxr-xr-x - circuits
drwxr-xr-x - digital_simulator
drwxr-xr-x - extended
drwxr-xr-x - tools