关键词: 1-Wire switches, pushbutton switches, microcontrollers
Abstract: For applications that require less than a keyboard or numeric keypad, this simple circuit monitors multiple pushbutton switches using a single multi-channel 1-Wire® addressable switch (DS2408), and a few external components.
![](http://uphotos.eepw.com.cn/soothmusic/pics/78507e98c366b0d1db508438a7c7b7dc.jpg)