Hi Vlad, I have an example of this kind of circuit in my simulator. It works with a 16C71 but the pin number is the same and the 16F84 is also supported. You can take a look on this link: http://perso.wanadoo.fr/udev Regards, Nicolas ----- Original Message ----- From: "Vlad" To: Sent: Monday, February 09, 2004 9:46 PM Subject: [PIC:] multiplex 7seg LED with drivers > Hello folks, > > I'm in the process of designing a toy circuit to keep track of life > counters for various games. It should support 3 players. Each player > will have two 7 segment LED displays that will display a number between > 0-99, and also 2 switch buttons that will be used to increase and > decrease the number displayed on these LED displays. > > I have a handful of 16f84 PIC's and currently learning how to program > them. With only a limited number of input/output pins on this chip > (13 I believe) what would be a good way to allocate these pins for the > switch buttons and displays? > > I have read various articles in the Usenet archives which suggest > multiplexing displays, this requires 7 pins for each segment and 1 > pin for every other display. I think this will eat up in to all my > pins though. Can I use the same multiplexing technique with a single > display/driver chip? Any suggestions? Also any thoughts on the switches? > > This is my first electronics project and PIC programming project > (ambitious, yes) > > Thanks > -v > > -- > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > email listserv@mitvma.mit.edu with SET PICList DIGEST in the body -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body