pls help in coding multiplex 4 seven segment

j3p0y · Joined: 25 Aug 2009 Posts: 5 Location: philippines

Pls help me to learn basic coding of multiplexing 4 seven segment display using pic16f877a. Because we have a project in programming a digital clock and my problem is I am running out of ports and I don't know how will I start the program in C language using multiplexing. I already have a circuit but I don't know how will I manipulate it. What should I do first?

Is there any website that I could learn it?

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

Post a link to the data sheet for your 7-segment display.

Also see this thread:
http://www.ccsinfo.com/forum/viewtopic.php?t=39731

bungee- · Joined: 27 Jun 2007 Posts: 206

Try THIS link Wink

j3p0y · Joined: 25 Aug 2009 Posts: 5 Location: philippines

I also check the forum but the info is a bit confusing for multiplexing and there's is a lot of sites I visit but they use assembly language.
I don't know if there is a datasheet for the seven segment I bought but it has a label, "ARK SM451006k" and the size is 1 inch. Is there any pattern or guidelines in multiplexing coding? Pls help. Thanks!!

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

Post a link to the webpage for it.

Guest · Posted: Thu Sep 10, 2009 10:54 am

i tried to search in the website but it doesnt have any datasheet available for my 7 segment..but i used in my circuit is 300ohms resistor in each LED..

piripic · Joined: 15 Jan 2008 Posts: 25

Hi, maybe this can help you (look at the first post in this thread)
http://www.ccsinfo.com/forum/viewtopic.php?t=33495