[系统设计方案] 基于51单片机的电子秒表设计
1． 使用数码管实时显示当前时间，格式为:年-月 -日 时-分-秒，例如： 17-01-10 13-30-29
2． 可以通过按键手动设置时间
3． 可以设置闹钟，到达设定时间，蜂鸣器发声提示
Digital clock is realized by using digital circuit, minutes and seconds for fashion digital display timer, widely used in personal family, station, office and other public places, become necessities of People's Daily life cannot little, with the development of digital integrated circuit and the wide application of quartz crystal oscillator, the accuracy of digital clock, far more than the old clocks and watches, clocks and watches of digital production and life brought great convenience to people, but also greatly expanded the clocks tell the time function of the original. Therefore, it is of great practical significance to study the digital clock and expand its application. (2020-06-21, C/C++, 50KB, 下载0次)
[系统设计方案] 000545
此文件为原论文，八十多页。请用CAJ客户端观看。回路电阻是反映电力开关设备性能和运行状态的一项重要技术指标。 为了实现对断路器回路电阻的快速准确测试,设计了一种基于超级电容大电流放电特性的回路电阻测试系统
This file as the original papers and more than 80 pages. Please use CAJ client to watch. Loop resistance is an important technical index to reflect performance and operation status of power switch equipment. In order to realize the test of circuit breaker loop resistance accurately and quickly, a large current discharge characteristics of super capacitor loop resistance test system based on (2016-06-29, C/C++, 1KB, 下载3次)
[系统设计方案] low-jitter-Clock-IC
每个数码系统之所以正常准确工作的基础是其心脏 – 时钟序列的无误. 而用来产生时钟信号的资源有许多种: 系统主芯片输出时钟信号, 以MCU微处理器来产生时钟, 以成本较低的晶振来产生时钟信号, 但是还是有很多人不知道或不了解我们还有另外一个选择:用一个集成电路PPL(锁相环)时钟芯片.
Each of the digital system is the reason why the normal work accurately based on the its heart- clock sequence is correct resources used to generate the clock signal, there are many types: system main chip output clock signal to generate the clock to MCU microprocessor to cost lower crystal to generate the clock signal, but there are still a lot of people do not know or do not know there is another option: an integrated circuit PPL (phase locked loop) clock chip. (2013-04-28, C/C++, 88KB, 下载4次)
[系统设计方案] DSP-STUDY-VA.0
TMS320F28035实验板：
完整的原理图，完速的PCB图，都是protel99se文件。直接打样PCB板即可。
功能有：
1、一个蜂鸣器。
2、4个LED。
3、4个按键。
4、实时时钟。
5、液晶显示
6、EEPROM。
7、RS485。
8、SPI。
9、CAN。
10、RS232。
11、A/D检测。
12、TZ事件输入。
13、捕捉输入
TMS320F28035 experiment (2013-02-27, C/C++, 409KB, 下载251次)
[系统设计方案] Cloud-computing
这是与计算的最新资料，对计算机专业的学生很有帮助， 云计算是继1980年代大型计算机到客户端-服务器的大转变之后的又一种巨变。 这是一种时代的导向
This is the latest information and computing, computer science students is helpful, cloud computing is a sea change after a big change in the 1980s mainframe computers to client- server' s. This is an age-oriented (2012-07-15, C/C++, 2730KB, 下载8次)
[系统设计方案] Freescale
本文以第六届飞思卡尔杯智能汽车竞赛为背景详细介绍了智能车系统的软硬件结构和开
发流程。采用1:10 的仿真车模，以飞思卡尔半导体公司生产的16 位单片机MC9S12XS128 为核心控制器，在CodeWarrior IDE 开发环境中进行软件开发，使赛车在跑道上沿着黑线以最快的速度行驶
Freescale Cup Intelligent car race of the sixth as the background details of intelligent vehicle systems hardware and software architecture and development process. 1:10 of the Simulation Model cars produced by Freescale Semiconductor 16 microcontroller MC9S12XS128 the core controller in the CodeWarrior IDE development environment for software development, so that the car driving along the black line on the runway with the fastest speed (2012-05-22, C/C++, 1375KB, 下载6次)
[系统设计方案] HCS12
基于HCS12单片机设计一种智能车系统。在该系统中,由红外光电传感器实现路径识别,通过对小车速度的控制,使小车能按照任意给定的黑色引导线平稳地寻迹。
HCS12 microcontroller based design of an intelligent vehicle systems. In this system, the path from the infrared photoelectric sensor to achieve recognition through the car speed control, so the car can be in any given smooth black guide line tracing. (2011-11-26, C/C++, 136KB, 下载3次)
[系统设计方案] dht11temp
DHT11是集温度湿度检测于一体的数字化传感器。它应用专用的数字模块采集技术和温湿度传感技术，确保产品具有极高的可靠性与卓越的长期稳定性。传感器包括一个电阻式感湿元件和一个NTC测温元件，并与一个高性能8位单片机相连接。因此该产品具有品质卓越、超快响应、抗干扰能力强、性价比极高等优点。每个DHT11传感器都在极为精确的湿度校验室中进行校准。校准系数以程序的形式储存在OTP内存中，传感器内部在检测信号的处理过程中要调用这些校准系数。单线制串行接口，使系统集成变得简易快捷。超小的体积、极低的功耗，信号传输距离可达20米以上，使其成为各类应用甚至最为苛刻的应用场合的最佳选则。产品为 4 针单排引脚封装。连接方便，特殊封装形式可根据用户需求而提供。
为方便在单片机实验系统V2上开发温湿度程序，现根据DHT11的范例程序，结合STC12C系列单片机的特点，编写了DHT11的有关接口函数（C51语言）。请大家下载并使用在自己的系统中。
ture measuring element, and with a high-performance 8-bit microcontroller connections. So the product has excellent quality, super fast response, strong anti-jamming capability, and cost-effective extremely high yield. Each DHT11 sensors are extremely accurate calibration checkout room in the humidity. Calibration coefficient to program OTP memory stored in internal signal detection, the sensor in the process, to call these calibration coefficient. Singleline system serial interface, make system integration become simple and quick. Super small volume, low power consumption, signal transmission distance is 20 meters above, make it become the most demanding of application and even the best selected applications. The product is 4 needles single pin encapsulation. Connecting convenience, special packaging forms can be provided according to user requirements.
For the convenience of in the SCM experiment system developed on V2, currently DHT11 humidity procedures according to the example pr (2011-05-12, C/C++, 7KB, 下载9次)
[系统设计方案] bianyaqicanshu
1、基本参数：
输入电压：Vac 100-240Vac
输入频率：50Hz
输出电压：24.5V
输出电流：1.5A
输出功率：36.75W
开关频率：65KHz
预估效率：85
输入最大功率：43W
变压器最高温升：43度
1, the basic parameters: Input voltage: Vac 100-240Vac Input frequency: 50Hz Output Voltage: 24.5V Output Current: 1.5A Output power: 36.75W Switching Frequency: 65KHz estimated efficiency: 85 of the maximum input power: 43W maximum temperature rise of transformers : 43 degrees (2011-05-05, C/C++, 8KB, 下载4次)
[系统设计方案] intelligent-socket
详细介绍了构成智能插座的电源模块、
电能传感模块、电器通断模块、存储模块、处理器和无线通信模块的设计．此外还对电源模块、无线通信模决、电能传感模块、以及实际的节能效果方面进行了测试验证．
Details of the composition intelligent power module socket, power sensing module, electrical-off modules, memory modules, processors, and wireless communications module. In addition, the power module, the wireless communication mode decision, power sensing modules, and practical aspects of energy saving effect of the test validation. (2011-05-04, C/C++, 417KB, 下载58次)
[系统设计方案] ParallelRepeatedOfDigitalSignalProcessorTMS320VC55
为了把TMS320C5000系统上运行的程序在系统上电复位后顺利地加载到DSP的内部
高速存储器上, 文中提出了一种基于TMS320VC5509DSP芯片的二次引导程序加载方式, 同时
给出了通过控制扩展地址线来引导主程序并执行的具体引导程序流程。
Repeated of TMS320VC5509DSP chip has guided procedure loading way , has given technological process out at the same time by the fact that the line controlling expansion address coming to guide the host procedure and executing concre is homing program. (2010-08-16, C/C++, 55KB, 下载4次)
[系统设计方案] AVRLED
以ATmega16为核心设计的led点阵显示电路，两片4514作为编译码芯片，led作为显示器，可以显示字母、数字、汉字及符号，电路设计为8片8*8led串联显示，并可进行扩展以一次性显示更多内容，软件设计中程序中有的字模都可以通过led显示，字模取模是通过专用软件得到的。
To ATmega16 as the core design led dot matrix display circuit, two 4514 as the encoding and decoding chips, led as a display, can display letters, numbers, characters and symbols, circuit design for the 8 8* 8led series shows, and can be extended to a one-off show more content, software design programs are available through some matrix led display, matrix modulus is through special software to get. (2010-03-19, C/C++, 110KB, 下载9次)
[系统设计方案] JS-6B1
JS-6B1/111是一款全I2C控制的频率合成多制式视频电子调谐器，介绍了该芯片的特点、功能。并利用JS-6B1/111设计了电视信号前端处理系统，给出了其硬件结构以及软件流程。
JS-6B1/111 is a full-I2C-controlled frequency synthesizer tuner multi-format Video Electronics introduced the chip' s features and functions. And use JS-6B1/111 front-end design of a television signal processing system, given its hardware and software processes. (2010-02-22, C/C++, 191KB, 下载2次)
[系统设计方案] DSP_based_power_line_modem
基于DSP的电力线调制解调器及其驱动程序的研究，包括OFDM调制技术、卷积码、交织编码和Turbo码编码技术、同步、访问控制方式等关键技术。研究生毕业论文，花银子买的，现在无私贡献出来咯！不可多得，叙述非常详尽，仅供参考！
DSP-based power line modem and its drivers, including studies on OFDM modulation, convolutional codes, interleaving coding and Turbo coding techniques, synchronization, access control methods such as key technologies. Post-graduate thesis and spent money on, and now, out of selfless contribution to strategy! Rare, describes in great detail for reference purposes only! (2010-01-07, C/C++, 3780KB, 下载112次)
[系统设计方案] ARM_uC_OS_qixiang_shujucaiji
本文提出并研究设计了一个基于ARM和uC/OS一11的自动气象站实时多任务数据采集系统，完成了系统的硬件和软件设计。该系统以犯位高性能ARM微处理器S3C44BOX为硬件核心，扩展了10/100M以太网接口、USB2.0接口、RS232串口以及DE接口等通用接口 以嵌入式实时操系统uC/OS-II为软件平台，在ARMSDT.251环境下进行系统软件的开发。该系统充分利用了ARM微处理器高性能、低功耗、低成本的优势，发挥了uC/OS-II可移植性好、开发成本低的点，为自动气象站的数据采集提供了一个经济实用的解决方案。
In this paper, and designed a study based on the ARM and uC/OS-11 automatic weather station data acquisition in real-time multi-tasking system, the completion of the system' s hardware and software design. The system is committed S3C44BOX bit microprocessor for high-performance ARM core hardware to expand the 10/100M Ethernet interface, USB2.0 interface, RS232 serial port as well as the common interface, such as DE interface to embedded real-time systems Cao uC/OS-II for the software platform, ARMSDT.251 environment in the software development system. The system makes full use of high-performance ARM microprocessor, low power, low-cost advantages, has played a uC/OS-II portability, and the development of low-cost point for the automatic weather station data collection provides an economic practical solutions. (2009-07-21, C/C++, 1990KB, 下载63次)
[系统设计方案] Smartelectriccar(fullpaper)
本系统以设计题目的要求为目的，采用80C51单片机为控制核心，利用超声波传感器检测道路上的障碍，控制电动小汽车的自动避障，快慢速行驶，以及自动停车，并可以自动记录时间、里程和速度，自动寻迹和寻光功能。整个系统的电路结构简单，可靠性能高。
The system design requirements for the purpose of the topic, using 80C51 single-chip microcomputer to control the core, the use of ultrasonic sensors detect obstacles on the road, control of electric cars automatic obstacle avoidance, fast low traffic speeds, as well as the automatic parking, and can automatically record the time , mileage and speed, automatic ray tracing and searching functionality. Circuit the whole system of simple structure, high reliability. (2008-07-19, C/C++, 381KB, 下载38次)
[系统设计方案] TC35
TC35i新版西门子工业GSM模块是一个支持中文短信息的工业级GSM模块,工作在EGSM900和GSM1800双频段,电源范围为直流3.3～4.8V ,电流消耗——休眠状态为3.5mA，空闲状态为25mA，发射状态为300mA(平均)，2.5A峰值；可传输语音和数据信号, 功耗在EGSM900(4类)和GSM1800(1类)分别为2W和1W ,通过接口连接器和天线连接器分别连接SIM卡读卡器和天线。SIM电压为3V/1.8V，TC35i的数据接口(CMOS电平)通过AT命令可双向传输指令和数据,可选波特率为300b/s～115kb/s , 自动波特率为1.2kb/s～115kb/s。它支持Text和PDU格式的SMS(Short Message Service,短消息),可通过AT命令或关断信号实现重启和故障恢复
The new industrial GSM Siemens TC35i module is a short message in support of the Chinese industrial grade GSM module, working in EGSM900 and GSM1800 dual band, power range of DC 3.3 ~ 4.8V, current consumption- dormant for 3.5mA, idle to 25mA, launch status 300mA (average), 2.5A peak can transmit voice and data signals, power consumption in the EGSM900 (4) and GSM1800 (1 category) were 2W and 1W, through the interface connector and antenna connector connected SIM card reader and antenna. SIM voltage 3V/1.8V, TC35i data interface (CMOS level) through the AT command can be bi-directional command and data transmission, an optional baud rate is 300b/s ~ 115kb/s, auto-baud rate is 1.2kb/s ~ 115kb/s. It supports Text and PDU format of SMS (Short Message Service, Short Message Service), available through AT command or signal realize turn-off to restart and Recovery (2008-07-14, C/C++, 2425KB, 下载309次)
[系统设计方案] Base_Can_Temp_scan
基于CAN总线的温度检测节点设计
本文介绍了一种应用LM35温度传感器和PICMicro的温度检测节点的设计方案，用于检测在模拟汽车电子点火的过程中，电子点火模块的核心模块温度和环境温度，将阐明模块结构、工作原理及采样值量化的方法。
CAN bus based on the temperature detection node design This paper introduces an application LM35 temperature sensor and the temperature detection PICmicro node design, for the detection of automotive electronics in a simulated process of ignition, electronic ignition module is the core module temperature and ambient temperature will clarify the module structure, working principle and the value of quantitative sampling methods. (2008-04-11, C/C++, 43KB, 下载11次)
[系统设计方案] ICdukaqi
内附IC读卡器设计方案,该设计使用89C52和MCM200,里面有详细的设计过程及程序代码,相信有一定IC卡经验，技术及具有一定的计算机软/硬件技术（尤其是微处理单片机MCU技术）的同行定能将本文消化之后而能设计出诸多应用场合的产品.
containing IC reader design program, which is designed to be used 89C52 and MCM200. There are detailed design process and procedure code, I believe a certain IC card experience, Technology and certain computer software/hardware technology (especially microprocessor MCU MCU technology) counterparts can extend the after the text digest able to design many applications products. (2006-09-07, C/C++, 142KB, 下载122次)
[系统设计方案] Audio.Player.v1.1
智原科技正式推出可携式MP3音乐播放器SoC设计平台 - FIE7系列音频平台方案，首先推出的是针对低功耗有强烈需求的可携式，基于闪存的MP3播放器 - FIE7005语音设计平台，该平台的特色在于使用双核技术并利用智原科技所开发并验证优化过的大量硅知识产权(IP)构建而成
The wisdom original science and technology officially promotes
may take along type MP3 music player SoC to design the platform- FIE7
series audio frequency platform plan, first promotes is aims at the
low power loss to have the intense demand to be possible to take along
the type, based on dodges MP3 which saves the player- FIE7005
pronunciation to design the platform, this platform characteristic
lies in the use 鍙屾牳 technology and the use wisdom original science
and technology develops and the confirmation has optimized the massive
silicon intellectual property rights (IP) to construct becomes (2006-08-22, C/C++, 292KB, 下载14次)