作者：0207-孙玲玉、0229-于晓琦、0114-梁雨
74HC137 3-8线译码器
![UOZF3F{HIHBVVI92K7VZ]5E.png](http://upload-images.jianshu.io/upload_images/4871661-e5ba06b941a8e32c.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
74HC139 2线至4线译码器
![{KCDJ0]LRNPTFN2CYU}IV{S.png](http://upload-images.jianshu.io/upload_images/4871661-9704933236b5ea1c.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
74HC138 3线至8线译码器
${(URG{0T9P0O8H7QNW1D%N.png
74HC154 4线至16线译码器
0`G11U{@M2OA24)8YR9)9H8.png
74HC4514 4至16线译码器
8.png
