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DESIGN IDEAS - CMOS IC Makes Low-Cost Digital Potentiometer - Power Management In The ST62 - Automatic Power-Off Circuit Saves Battery - Simple PC Smart Card Reader Enhancement - Digital Position Encoder Does Away With ADC - Single-Supply RS-232 Transmission Without Level-Translator ICs - µC Controls Charge Pump As Background Task - Clock Multiplier Circumvents PLL - Drive Smart Cards With A Low-Cost MCU's UART - Wireless “Battery” Energizes Low-Power Devices - Harvest Energy Using A Piezoelectric Buzzer - Drive A Single-Coil Latching Relay Without An H-Bridge Circuit DESIGN CONTESTS ARTICLES
CONTACT
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INTERNET PASSWORD MANAGER
Article published in the Circuit Cellar
Magazine, Issue 204, July 2007 With this ATmega168-based password managing system, you can enter, display, and securely store all of your passwords and usernames. The handy device connects to your PC via a software-controlled USB interface. A LOOK BACK AND FORWARD IN TECH TIME "In this issue, we present you with two interesting articles about Internet-related design projects. Both projects prove that with a little effort, you can use your design skills to create innovative solutions to common problems. On page 22, Carlos Cossio describes a handy password management system. You can use the system to enter, display, and securely store all of the passwords and usernames that you use for various web sites. An added bonus is that you can program the system to automatically complete username and password fields for you when you click on your favorite security-protected web site." C.
J. Abate
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