>>106143866
>You now have 60 bytes/minute communication system.
Eh, hour.
Then we can all agree that 0x30, which is 0b00110000, can be the binary representation for the number '0' and 0x40 is the capital letter 'A', and then you can call this system ASCII and now you have an agreed set of what each of these switch states mean.

That's it.
That's really all there is to it.