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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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c_excel_chao
excel_用C操作_包含读,写,删.简单的调用实例..
excel_用C操作_包含读,写,删.简单的调用实例..
excel_用C操作_包含读,写,删.简单的调用实例..
- 2022-08-15 22:00:42下载
- 积分：1
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实现对TS
实现对TS->PES->ES,分离出TS流里的视频音频,也可将视频音频合并为TS流.
实现对PS->PES->ES->PES->TS,分离出PS流里的视频音频,也可将视频音频合并为PS流.
-Realize on the TS-
- 2023-06-20 00:45:05下载
- 积分：1
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atmel的at91sam9260芯片的外部中断初始化实例以及一些常用接口初始化程序，源于实际应用...
atmel的at91sam9260芯片的外部中断初始化实例以及一些常用接口初始化程序，源于实际应用-atmel chip of at91sam9260 external interrupt as well as some commonly used to initialize an instance of interface initialization procedure, from the practical application of
- 2022-03-18 20:46:44下载
- 积分：1
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基于LM6938的I2C驱动，读写AT24C512和时钟IC PCF8563
基于LM6938的I2C驱动，读写AT24C512和时钟IC PCF8563-The LM6938-based I2C driver, read and write AT24C512 and clock IC PCF8563
- 2023-03-18 22:30:04下载
- 积分：1
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PCI总线操作的相关内容，对于了解PCI、实现PCI操作非常有帮助！...
PCI总线操作的相关内容，对于了解PCI、实现PCI操作非常有帮助！-PCI bus operation of the relevant content, for the understanding of PCI, realize PCI operation very helpful!
- 2022-04-12 15:17:53下载
- 积分：1
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基于对
基于PCI-1240运动控制卡的示例5-PTP-Based on the PCI-1240 motion control card examples of 5-PTP
- 2022-03-18 11:39:32下载
- 积分：1
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嵌入式微处理器的设计分析与仿真验证
嵌入式微处理器的设计分析与仿真验证-Embedded Microprocessor Design Analysis and Simulation
- 2023-04-30 23:40:06下载
- 积分：1
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计算器，能实现简单的加减乘除运算。在MINIGUI下运行。用C语言开发的。...
计算器，能实现简单的加减乘除运算。在MINIGUI下运行。用C语言开发的。-Calculator that can perform simple addition and subtraction multiplication and division operations. The MINIGUI run. Developed using C language.
- 2022-04-17 10:43:08下载
- 积分：1
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linux 串口通信驱动源码,该代码能够接PC机键盘
linux 串口通信驱动源码,该代码能够接PC机键盘-linux-source-driven serial communication, the code can access PC keyboard
- 2022-07-03 22:37:47下载
- 积分：1
