void key_scan() //Keyboard scanning function{ uchar row,col,temp1,temp2,key; DDRE =0xF0; //The upper four bits are output, the lower four bits are input PORTE=0x0F; //The upper four bits output 1, the...
[font=微软雅黑][size=5][color=#ff0000]The TI Cup 2014 National Undergraduate Electronic Design Competition is held at Huazhong University of Science and Technology. How many people in our forum are workin...
[i=s]This post was last edited by Maoqiu Dada on 2021-12-29 14:36[/i]There are now a wide variety of smart devices on the market, using a variety of communication protocols. Combining these devices in...
[table=98%] [tr][td][align=left][font=微软雅黑][size=4]According to EEWORLD moderator rules and moderator operation manual[/size][/font][/align][align=left][url=https://bbs.eeworld.com.cn/thread-370268-1-...
[p=26, null, left][color=#000][font=Arial]Introduction: Why do you want to test the Ethernet interface? [/font][/color][/p][p=26, null, left][color=#000][font=Arial]-----------------------------------...