Can you tell me anything about it? I'm trying to send a signal from an analog to digital chip to a TI-83 and TI's page says they have a routine that will recieve a byte of data in "TI-83 protocol" so my problem seems to be getting the signal into that protocol. Unfortunately they don't tell anything more about it. If you have any ideas please respond. If not I'm sorry to waste your time. Amy Loomis