please dont rip this site

Light Emitting Diode Displays


Driving 12 leds with 4 uController pins

From Mark Willis, Jeff King, Don McKenzie, Craig Lee 

(A)--\/\/--+-----+-----+
           #     |     |
           #     |     |
(B)--\/\/--+--+--(--+  |
              #  #  #  #
              #  #  #  #
(C)--\/\/--+--+--+  |  |
           #        |  |
           #        |  |
(D)--\/\/--+--------+--+

Where each ## in the diagram is actually two LED hooked "anti-parallel" like this:

 |----|<-----|
-|           |-
 |---->|-----|


ABCD  LED ON
----  ------
0000  none
1111  none
zzzz  none
01zz   1
10zz   2
0z1z   3
1z0z   4
z01z   5
z10z   6
0zz1   7
1zz0   8
zz01   9
zz10  10
z0z1  11
z1z0  12

Questions:

file: /techref/io/led/12w4pins.htm, 2KB, , updated: 2007/4/2 12:58, local time: 2009/11/21 21:54,
TOP NEW HELP FIND: 
38.107.191.102:LOG IN
©2009 PLEASE DON'T RIP! DO: LINK / DIGG! / MAKE!
 ©2009 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions?
Please DO link to this page! Digg it!
<A HREF="http://piclist.com/techref/io/led/12w4pins.htm"> Light Emitting Diode Displays - Driving 12 leds with 4 uController pins</A>
After you find an appropriate page, you are invited to your to this massmind site! (posts will be visible only to you before review) Just type in the box and press the Post button. (HTML welcomed, but not the <A tag: Instead, use the link box to link to another page. A tutorial is available Members can login to post directly, become page editors, and be credited for their posts.


Link? Put it here: 
if you want a response, please enter your email address: 
Attn spammers: All posts are reviewed before being made visible to anyone other than the poster.
Did you find what you needed?
  cover THE book for getting started with the PIC uC! 5 stars at Amazon.com Now available from piclist.com for $34.95 ($7.50 S&H)
 
Feel the NEED for SPEED?
Ubicom SX18 thru SX52, PIC 16c5X compatibile, 50 to 75 MIPS microcontrollers!
Now US customers can buy the Excellent SXDev from SXList.com
for $150 + $15 import fee + s&h (~ $180 total+tax in CA)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  .