超声波与人体感应各种中文资料精华打包 超声波与人体感应资料LCD1602实验：开发板上插上1602,用四根杜邦线与超声波模块相连，分别为 模块VCC=板上的VCC,模块GND＝板上的GND,模块TRIG＝单片机管脚P2.0， 模块ECH0单片机管脚P2.1. 接好后下载 脉宽测量.HEX 这个烧录文件就可以看到结果了。 数码管实验：数码管的接线请看51例程中的数码管实验的接线，然后接开发板与超声波模块的线，模块VCC=板上的VCC,模块GND＝板上的GND,模块TRIG＝单片机管脚P2.0， 模块ECH0单片机管脚P2.1。 接好后下载 脉宽测量.HEX 这个烧录文件就可以看到结果了。
上传时间： 2013-11-14
上传用户：chongcongying
很好用的乐谱编辑器，根据简谱可直接生成C语言程序，再用Keil打开，可以生成二进制文件（.hex）
标签： 编辑
上传时间： 2013-11-13
上传用户：1318695663
单片机的基础电路仿真电路，用Proteus7.5打开即可，内还带有51单片机的C程序hex格式的………………
上传时间： 2013-12-16
上传用户：mahone
本文以LED流水灯程序为例，教你一步一步学会如何使用Keil C51软件编写程序，编译成Hex文件，在C51集成仿真调试环境中利用ME300开发板的仿真功能进行硬件仿真调试的这个过程。
标签： 51单片机
上传时间： 2013-12-15
上传用户：yiwen213
Analog Inputs and Outputs in an S7 PLC are represented in the PLC as a 16-bit integer. Over the nominal span of the analog input or output, the value of this integer will range between - 27648 and +27648. However, it is easier to use the analog values if they are scaled to the same units and ranges as the process being controlled. This applications tip describes methods for scaling analog values to and from engineering units.
上传时间： 2013-11-17
上传用户：3294322651
The MAX9257/MAX9258 programmable serializer/deserializer (SerDes) devices transfer both video data and control signals over the same twisted-pair cable. However, control data can only be transmitted during the vertical blank time, which is indicated by the control-channel-enabled output (CCEN) signal. The electronic control unit (ECU) firmware designer needs to know how quickly to respond to the CCEN signal before it times out and how to calculate this duration. This application note describes how to calculate the duration of the CCEN for the MAX9257/MAX9258 SerDes chipset. The calculation is based on STO timeout, clock frequency, and UART bit timing. The CCEN duration is programmable and can be closed if not in use.
上传时间： 2014-01-24
上传用户：xingisme
Digitemp Junior – An RS-232 Port-Powered Digital Thermometer Digitemp Jr. is a device that is designed to measure and report ambient temperature. When connected to an RS-232 port on any PC, it will periodically measure and report in ASCII form the ambient temperature in degrees Celsius. These temperature readings can be monitored with any terminal program. If the terminal program supports capture to disk, the temperature readings can be saved to disk for further analysis with a spreadsheet program or other data analysis tool. The simple ASCII output format of Digitemp Jr. makes it rel- atively easy to write custom software for receiving, recording, and analyzing ambient temperature data. Best of all, Digitemp Jr. requires no external power sup- plies or batteries. It is powered directly by the RS-232 port.
上传时间： 2013-10-21
上传用户：baitouyu
目录： 1. Character Type Functions － 字符类型函数 2. Standard C Input/Output Functions － 标准输入输出函数 3. Standard Library Functions － 标准库和内存分配函数 4. Mathematical Functions － 数学函数 5. String Functions － 字符串函数 6. BCD Conversion Functions － BCD 转换函数 7. Memory Access Functions － 存储器访问函数 8. Delay Functions － 延时函数 9. LCD Functions － LCD函数 10. LCD Functions for displays with 4x40 characters － 4×40 字符型LCD函数 11. LCD Functions for displays connected in 8 bit memory mapped mode －以8 位外部存储 器模式接口的LCD显示函数 12. I2C Bus Functions － I2C 总线函数 13. National Semiconductor LM75 Temperature Sensor Functions － LM75 温度传感器函数 14. Dallas Semiconductor DS1621 Thermometer/Thermostat Functions － DS1621 温度计函 数 15. Philips PCF8563 Real Time Clock Functions － PCF8563 实时时钟函数 16. Philips PCF8583 Real Time Clock Functions － PCF8583 实时时钟函数 17. Dallas Semiconductor DS1302 Real Time Clock Functions － DS1302 实时时钟函数 18. Dallas Semiconductor DS1307 Real Time Clock Functions － DS1307 实时时钟函数 19. 1 Wire Protocol Functions － 单线通讯协议函数 20. Dallas Semiconductor DS1820/DS1822 Temperature Sensors Functions － DS1820/1822 温度传感器函数 21. SPI Functions － SPI 函数 22. Power Management Functions － 电源管理函数 23. Gray Code Conversion Functions － 格雷码转换函数
上传时间： 2013-10-22
上传用户：归海惜雪
Digitemp Jr. is a device that is designed to measure and report ambient temperature. When connected to an RS-232 port on any PC, it will periodically measure and report in ASCII form the ambient temperature in degrees Celsius. These temperature readings can be monitored with any terminal program. If the terminal program supports capture to disk, the temperature readings can be saved to disk for further analysis with a spreadsheet program or other data analysis tool. The simple ASCII output format of Digitemp Jr. makes it relatively easy to write custom software for receiving, recording, and analyzing ambient temperature data. Best of all, Digitemp Jr. requires no external power supplies or batteries. It is powered directly by the RS-232 port.
上传时间： 2013-10-20
上传用户：Maple
气压是气象监测中的一个重要参数，提出了一种气压数据采集模块设计方案，该模块采用数字气压传感器MS5534B、MSP430单片机MSP430F2272和带实时时钟（RTC）64 KB铁电存储器。通过低功耗软件设计方法以微安级整体平均功耗实现了气压数据的采集和存储，适合电池供电的连续高精度气压采集应用。给出了模块的软硬件设计以及MS5534B的性能指标和使用经验。 Abstract: Air pressure is an important parameter in weather monitor.This paper futs forward a new design scheme of low power-air pressure data acquisition module.The module uses a digital output barometer sensor MS5534B,MSP430 microcontroller MSP430F2272 and integrated RTC 64KB FRAM,precision air pressure measurement and storage chip.Another point of this module is low power consumption, so it is well suited for battery powered air pressure data acquisition applications. At the same time,the software and hardware deign of module is presented,And the speciaties and use notices of MS5534B are given.
上传时间： 2014-12-27
上传用户：drink！
