One for the power one for teh ground. Other combinations abound! i am guessing it also has a chip built into in.( generally these keypads have) so its probably sending you binary coded decimals on 4 wires.
cheers, anupam -----Original Message----- Sent: Thursday, August 29, 2002 12:20 PM To: Multiple recipients of list CHIPDIR-L Hello, I have a circuit for which I am doing some reverse engineering. There is a wire link to the LCD keypad. the keypad has 12 buttons on it. namely 1,2,3,4,5,6,7,8,9,0,#,* the wire has 7 wires one for power and apparently the rest of the 6 wires represent the 12 keys. I wanted to know is there any standard combination for the keys. I cannot apply power to check it out as I have to be careful not to blow the circuit. Can anyone help? How can I check? Regards, Aparna -- Author: aparna INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB CHIPDIR-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Author: Anupam Singh INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB CHIPDIR-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
