Electronic Circuits and Diagram-Electronics Projects and Design » Electronic Keys & Locks http://www.circuitstoday.com An Authentic Resource on Electronics Wed, 08 Feb 2012 13:54:26 +0000 en hourly 1 http://wordpress.org/?v= One transistor code lock http://www.circuitstoday.com/one-transistor-code-lock http://www.circuitstoday.com/one-transistor-code-lock#comments Thu, 18 Feb 2010 13:38:51 +0000 jacky http://www.circuitstoday.com/?p=3048 http://www.circuitstoday.com/one-transistor-code-lock/feed 9 Digital code lock http://www.circuitstoday.com/digital-code-lock http://www.circuitstoday.com/digital-code-lock#comments Thu, 09 Jul 2009 10:43:29 +0000 john http://www.circuitstoday.com/?p=1172 http://www.circuitstoday.com/digital-code-lock/feed 22 Electronic Combination Lock using IC LS 7220 http://www.circuitstoday.com/simple-electronic-combination-lock-using-ic-ls-7220 http://www.circuitstoday.com/simple-electronic-combination-lock-using-ic-ls-7220#comments Fri, 22 Feb 2008 11:52:30 +0000 jacky http://www.circuitstoday.com/?p=28 http://www.circuitstoday.com/simple-electronic-combination-lock-using-ic-ls-7220/feed 32