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This article describes how to use AD to identify the user s keyboard input metho...
本文介绍了如何用AD识别用户输入的键盘的方法，较之点阵识别有其不可替代的优势；因为如果用4*4的话须消耗8个I/O口，而如果系统有AD功能的话就可能轻松解决了。
单片机8051F330发给ARM然后发给电脑。
其原理就是利用电阻的分压，按键时产生不同的电压，再用中断快速读取电压；然后对其进行编码，通过串口软件EASYARM在个人电脑里显示；经实验观察，效果还可以。 -This article describes how to use AD to identify the user s keyboard input methods, compared with dot-matrix recognition has its irreplaceable advantages because if we use 4* 4, then to be consumed eight I/O port, and if the system function in AD, then on may be easily resolved. Singlechip 8051F330 distributed computer and then distributed to ARM. Its principle is to use the sub-ballast resistor, when keys have different voltage, and then quickly read voltage interruption then encode, through the serial port software EASYARM in the personal computer display by experimental observation, the effect can also be.
- 2022-05-25 22:40:40下载
- 积分：1
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基于minigui的软键盘设计的相关资料，包括一些源代码和网页以及pdf文档...
基于minigui的软键盘设计的相关资料，包括一些源代码和网页以及pdf文档-Based on the soft keyboard design minigui relevant information, including some source code and web pages and pdf documents
- 2022-05-25 21:27:21下载
- 积分：1
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E05-24LE1系列模块附送资料.zip
E05-24LE1系列模块附送资料.zip
- 2022-03-12 22:30:21下载
- 积分：1
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RS232 interrupt the development of C language source code package includes C sou...
RS232 中断开发 C 语言源程序 包内包含C源代码以及汇编子程序-RS232 interrupt the development of C language source code package includes C source code and compiled subprogram
- 2022-04-22 21:53:19下载
- 积分：1
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MiniGUI文档以及源代码和相关的网页，有利于…
minigui的文档以及源代码和相关网页，有利于基于minigui的软键盘开发-minigui documents as well as the source code and related web pages, in favor of the soft keyboard based on the development of minigui
- 2022-07-23 22:00:28下载
- 积分：1
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ADS下开发的A/D转换器AD7892及LCD显示程序
ADS下开发的A/D转换器AD7892及LCD显示程序-ADS developed under the A/D converter AD7892 and LCD display program
- 2022-02-01 13:35:04下载
- 积分：1
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" DSP Principle and Application of Technology" DSP
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》DSP相关部分器件资料和原理图库-" DSP Principle and Application of Technology" DSP-related part of the principle of device information and library
- 2022-05-25 15:13:17下载
- 积分：1
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GPRS无线通信模块MC35i及其外围电路设计,very good
GPRS无线通信模块MC35i及其外围电路设计,very good-GPRS无线Services信lose Yao Zhi MC35i 其 brisk wind外changchu围few, very good
- 2022-01-26 01:30:14下载
- 积分：1
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- 2022-03-15 03:44:00下载
- 积分：1
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embedded linux tools!
embedded linux tools!
- 2022-10-07 08:30:03下载
- 积分：1
