文件名称:LED
- 所属分类：
- 单片机(51,AVR,MSP430等)
- 资源属性：
- [PDF]
- 上传时间：
- 2012-11-26
- 文件大小：
- 922kb
- 下载次数：
- 0次
- 提 供 者：
- 侯**
- 相关连接：
- 无
- 下载说明：
- 别用迅雷下载，失败请重下，重下不扣分！
介绍说明－－下载内容均来自于网络，请自行研究使用
最近买了块开发板学习单片机，以下是电路原理图。不明白上面的4×4矩阵键盘(电路图最左上角）的编码原理。键盘的8条引线直接与p1.0^p1.7相连，疑惑的是即使按下任意按键也在p1口上读不到任何电平啊？
期待高手指点！-Recently bought a development board to study single-chip block, the following is the circuit schematic. Do not understand the above 4 × 4 matrix keyboard (circuit diagram most upper-left corner) encoding principle. 8-lead keyboard directly connected with the p1.0 ^ p1.7, doubts that even if the press any key I have also read p1 level no ah? Look forward to expert advice!
期待高手指点！-Recently bought a development board to study single-chip block, the following is the circuit schematic. Do not understand the above 4 × 4 matrix keyboard (circuit diagram most upper-left corner) encoding principle. 8-lead keyboard directly connected with the p1.0 ^ p1.7, doubts that even if the press any key I have also read p1 level no ah? Look forward to expert advice!
(系统自动生成,下载前可以参看下载内容)
下载文件列表
LED键盘模组
...........\ledkey.cfg
...........\LED键盘模组原理图v1.0.pdf
...........\LED键盘模组电路原理图及PCB图.ddb
...........\LED键盘模组自检程序.rar
...........\LED键盘模组说明书.pdf
...........\Readme.txt
...........\ledkey.cfg
...........\LED键盘模组原理图v1.0.pdf
...........\LED键盘模组电路原理图及PCB图.ddb
...........\LED键盘模组自检程序.rar
...........\LED键盘模组说明书.pdf
...........\Readme.txt