74hc123输出低电平的使用方法,单稳态触发器的使用介绍
74hc123 outputs a low level of use (2015-11-15, WORD, 136KB, 下载2次)
CUK转换器的毕业设计论文,适合毕业设计的参考
final year report for cuk converter (2013-11-21, WORD, 7800KB, 下载44次)
多路智力竞赛抢答器 实现实时指挥 闪烁 等待 交通指挥
Multiple quiz Responder to achieve real-time command flashes waiting for traffic control (2013-04-09, WORD, 4KB, 下载2次)
企业网络搭建及应用详细步骤以及用思科模拟器做的pkt
Enterprise network construction and application of the detailed steps to do with Cisco simulator pkt (2013-01-13, WORD, 4051KB, 下载86次)
可编程序控制器蘑菇种植机plc梯形图程序设计详细资料
Mushroom planting PLC ladder diagram design program (2012-05-09, WORD, 35KB, 下载10次)
一个基于VLC播放器开发设计文档！！！！
One of VLC Media player doc！！ (2012-04-15, WORD, 11KB, 下载19次)
汽车的变速器，传动轴的设计，含CAD图纸
The transmission, the design of the drive shaft, including CAD drawings
(2011-12-13, WORD, 2793KB, 下载27次)
木材旋切机加工工程，实现木材旋切机控制器的软件编写。
Wood peeling machine processing projects, to achieve wood peeling machine controller software development. (2011-09-09, WORD, 31KB, 下载30次)
结合电容器装置工程实例阐述在并联电容器装置用串联电抗器的电抗率选择问题上的经验与教训，提出区域电网中电容器电抗器组群体参数优选的目标函数和约束条件，例举两种不同参数配置方案的技术经济比较等，以供工程设计借鉴。
Combination of the capacitor device engineering examples described in the parallel capacitor devices in series reactor reactance rate selection of the experiences and lessons for regional power grid capacitor reactor group population parameter optimization of the objective function and constraints, examples of two different parameters configuration Technological and economic comparison for engineering design reference. (2011-03-01, WORD, 13KB, 下载4次)
此咖啡壶加热控制器为本人设计的控制器,内容包括功能说明,原理图,软件流程图等,可实现定时功能,预约功能,开机功能,关机功能.
The coffee pot heating controller I designed the controller, including functional description, schematic, software flow chart, can achieve timing, booking function, power function, power off function. (2011-02-15, WORD, 128KB, 下载20次)
需装设电涌保护器时，应符合下列各条：
1. 自身抑制
在电气装置全部由低压地下系统而不含架空线供电的情况下，依据表13.2－2 所规定的设备耐冲击电压值便足够了，而不需要附加的大气过电压保护。
在电气装置由低压架空线供电或含有低压架空线供电的情况下，且外界环境影响为AQ1（雷暴日数<25日/年）时，不需要附加的大气过电压保护。
earth design (2010-10-21, WORD, 436KB, 下载6次)
本系统设计结合单片机STC89C51编程实现的遥控开关来控制家用电器，让人们用一台遥控器控制电冰箱、电风扇、饮水机等家电。本设计的核心是以单片机stc89c51，利用光电耦合器来检测小车的形式的速度和距离，利用led显示小车的运动的状态和行车里程，并且外加电磁蜂鸣器来警告已接收到遥控信号，本文着重介绍了该系统的硬件设计方法及软件设计的办法。
The system design coupled with the remote control MCU STC89C51 programming switches to control household appliances, allow people to use a single remote control refrigerators, electric fans, water dispenser and other home appliances. The core of this design is based on SCM stc89c51, the use of optical coupler to detect the form of car speed and distance, using the movement led display car status and mileage, and the external electromagnetic buzzer to warn has received remote control signal, this paper focuses on the system' s hardware design methods and software design approach. (2010-03-18, WORD, 136KB, 下载25次)
本论文主要介绍了红、绿、黄三色交通信号灯较简单的数字逻辑控制电路设计及其原理。本设计方案由定时器、分频器、扭环形计数器、十进制减法器及七段显示译码器实现交通灯红、黄、绿三色的自动切换，在切换灯光颜色的同时进行时间定时状态的切换，使整个交通灯系统得以按照事先设定的定时时间顺利运转。
This paper focuses on the red, green, yellow three-color traffic signal control of the relatively simple digital logic circuit design and its principles. The design by the timer, divider, twisted ring counter, decimal subtraction device and the seven-segment display decoder to achieve traffic lights red, yellow and green three-color auto-switching, in the light color at the same time switching time of regular state switch, so that the whole traffic light system to time in accordance with pre-set timer running smoothly. (2009-11-13, WORD, 1219KB, 下载33次)
现代芯片在线烧写器资料，提供给大家参考制作
Modern chips online writer information, provides us with reference to production of (2009-09-24, WORD, 258KB, 下载4次)
本文详细的介绍了超声波照明控制器的设计，内容完整，并且用protel做出图形
This article describes a detailed ultrasound lighting controller design, content integrity, and used to make graphics Protel (2008-12-13, WORD, 783KB, 下载2次)
本文介绍一种以CPLD[1]为核心、以VHDL[2]为开发工具的时间控制器，该控制器不仅具有时间功能，而且具有定时器功能，能在00：00～23：59之间任意设定开启时间和关闭时间，其设置方便、灵活，广泛应用于路灯、广告灯箱、霓虹灯等处的定时控制。
This article describes a CPLD [1] as the core, VHDL [2] for the development of tools for time controller that features not only has the time, but with the timer function, can be between 00:00 ~ 23:59 arbitrarily set to open time and closing time, and its convenient, flexible, widely used in street lamps, advertising light boxes, neon lights, etc. The timing control. (2008-10-17, WORD, 214KB, 下载10次)
介绍怎样利用VHDL语言来实现一个多周期的处理器核心
on how to use VHDL to achieve more than one processor core cycle (2006-09-01, WORD, 63KB, 下载5次)
本文首先建立了航天器姿态动力学及运动学方程，该方程具有较强的非线性特性。通过将状态耦合部分作系统干扰项的处理，使原来的非线性模型转化为线性模型加非线性干扰的形式，从而得到了更加简单明了的姿态控制系统的表达式。
在应用滑模变结构原理对系统进行控制器设计时，首先通过二次型最优法求出了最优滑动面，在此基础上，利用自适应滑模控制原理，设计出了合适的系统控制律。
最后，运用所设计的姿态控制系统对某航天器进行数值仿真，并对仿真结果进行了分析。仿真结果很好地体现出所设计的变结构控制器的优点，并成功地对该航天器姿态进行了控制。
paper first established the spacecraft attitude dynamics and kinematics equation, the equation has strong nonlinear characteristics. By coupling part of the state system for the disturbance, so the original nonlinear model into a linear model nonlinear increases in the form of interference, and thus a more straightforward attitude control system expression. The application SMVSC tenets of the system controller design, the first through the quadratic optimal method, the optimal sliding surface, on this basis, using adaptive sliding control theory and design a suitable system control law. Finally, using the design of the attitude control system for a spacecraft numerical simulation, and simulation results are analyzed. Simulation results reflect good design of variable structure controller, (2006-03-11, WORD, 303KB, 下载399次)
目前很多水电公司仍然采用人工催费的方法，费时费力，效率低。水电费语音自动查询催费系统正是为解决这一问题应运而生的。电话用户可随时随地拨打水电公司特服电话访问查询系统，查询水电费发生情况，了解用水电情况；对于逾期拖欠水电费的用户，系统自动拨打欠费电话，提醒用户及时交纳水电费。
many utilities companies still use manual methods of payment reminders, time-consuming, inefficient. Utilities voice automated inquiry urge system is to resolve this issue at the right moment. Phone users can call anywhere hydropower companies serving special telephone inquiry system for the occurrence of utilities to understand the situation with water and electricity; Utilities overdue arrears for the user, the system automatically dial telephone arrears to remind users of timely payment of utilities. (2005-09-05, WORD, 310KB, 下载385次)
这个是 电脑装机系统设计的报告. 用于电脑城装机使用.客户服务器模式
installed the computer system design report. The city installed computers for use. Client-server model (2005-06-30, WORD, 26KB, 下载41次)