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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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这是LPC2200系列芯片内部Flash和外部Flash同时装载程序的分散加载文件使用示例。
ext_in.scf为分散加载文件,具体请读者自行分...
这是LPC2200系列芯片内部Flash和外部Flash同时装载程序的分散加载文件使用示例。
ext_in.scf为分散加载文件,具体请读者自行分析,我们不对此示例提供技术支持。
在示例程序生成目标的test_ext_in.i32文件夹下有2个文件
/ ROM_EXEC --- 写入内部FLASH
/ ROM_EXEC1 --- 写入外部FLASH
(在选择文件的时候,请选择下拉所有文件*.*)
将两个文件分别写入后,选择跳线Bank0-FLASH,Bank1-RAM,BootSel-Inside
写入内部Flash,可用ISP方法下载。-This is the LPC2200 series chip Flash and external Flash loading procedures at the same time load the file using the sample dispersion. ext_in.scf for decentralized load the file, specifically requested the readers on their own analysis, we do not provide technical support for this sample. In the sample program to generate goals test_ext_in.i32 folder two files under/ROM_EXEC--- write the internal FLASH/ROM_EXEC1--- write external FLASH (in the choice of document, select the drop-down all the files*.* ) will write two files, select jumper Bank0-FLASH, Bank1-RAM, BootSel-Inside write the internal Flash, available methods to download ISP.
- 2022-04-26 11:47:05下载
- 积分:1
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Getting Started with FPGA verilog programming exercises, the contents of relativ...
FPGA verilog编程入门练习,内容比较简单,但对于新手来说是很好得资料!-Getting Started with FPGA verilog programming exercises, the contents of relatively simple, but it is good for the novice to information!
- 2022-01-26 03:50:56下载
- 积分:1
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在uclinux/linux下通过串口以XMLOAD协议与PC终端通讯,可以实现从PC到平台的文件下载....
在uclinux/linux下通过串口以XMLOAD协议与PC终端通讯,可以实现从PC到平台的文件下载.-In uclinux/linux through the serial port to XMLOAD agreement with the PC terminal communication can be achieved to the platform from the PC to download the document.
- 2022-07-17 14:06:22下载
- 积分:1
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mm36sb020存储器读写
mm36sb020存储器读写-mm36sb020 Memory Reader
- 2022-07-26 10:30:10下载
- 积分:1
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ARM Boot 程序源码 1.1.0armboot
ARM Boot 程序源码 1.1.0armboot-1.1.0
希望给你带来方便-ARM Boot procedures 1.1.0armboot source-1.1.0 want to give you the convenience of
- 2022-09-19 02:25:03下载
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sopc sdram 硬核的verilog 源码
sopc sdram 硬核的verilog 源码-sopc sdram hard core of the Verilog source code
- 2022-03-05 12:37:26下载
- 积分:1
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一个arm7开发板上的iic(24C02)测试实验,此吃程序用c语言编写。...
一个arm7开发板上的iic(24C02)测试实验,此吃程序用c语言编写。-a arm7 development board iic (24C02) testing laboratories, this eating program is available c language.
- 2022-01-25 20:08:18下载
- 积分:1
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用MSP430超声波传感器
应用背景你好,这是一个项目告诉你如何使用与TI MSP430超声波传感器。我用MSP430G2452,然而,一G2553或任何其他芯片也会工作,但有些数字可能不同的。当然,我假设你已经知道如何使用IAR或CCS。关键技术你需要的是:MSP430超声波传感器(我有srf05,和我使用制动和其他回声一销。那里还选择在你连接模式引脚GND和只使用一个密码,但我不会那样做的你所要做的就是产生一个脉冲的长度取决于传感器,传感器。在srf05是10us。当传感器接收的脉冲,它将产生一个8次声波爆受单片机,并送回波脉冲回微控制器,我们必须测量脉冲。(对我来说太难了用词来描述整个程序,所以只需要花时间去理解代码)。从结果中得到的结果,我们只需要58。(对于任何关于传感器的进一步信息,你应该谷歌文件)。
- 2023-09-01 23:00:03下载
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stepper motor interface to 8051
步进电机接口
- 2022-10-02 01:10:03下载
- 积分:1