3D打印应用领域.主要有九大应用领域，分别是科学研究，文物保护，医疗行业，建筑设计，产品设计，工业制造，汽车制造，动漫娱乐，配件饰品。
3D printing application areas, including scientific research, preservation of cultural relics, medical industry, architecture design, product design, industrial manufacturing,automobile industry, Anime Entertainment,Accessories & ornaments (2014-07-22, PPT, 1255KB, 下载13次)
互动电视业务和传统电视业务的本质区别在于老百姓实现了“从看电视->到用电视->娱乐电视”的转变，运营商实现了“从传统单一的收视费盈利模式->复合型的立体收入模式”的转变，所以要成功实现“革命性”的突破，让老百姓养成“要用->可用->愿意用（黏住）->喜欢用（离不开）”互动电视业务的习惯，产生旺盛的人气是核心工作，随着双向互动业务项目的实施，我们和运营商即将面临的三个棘手核心问题：
1.如何打造一个可运营的成熟互动电视产品，让老百姓感到互动不再陌生，互动成为一种生活习惯……
2.如何形成良好的运作体系，能够保障互动电视业务内容的安全、高效运营……
3.如何快速发展用户，让互动电视顺利进入千家万户……
Interactive television services and conventional television services essential difference between people realized "from watching TV-> to use the TV-> Entertainment Television" changes, operators achieve a "single subscription from the traditional profit model-> complex three-dimensional revenue model "changes, so to successfully achieve the" revolutionary "breakthrough, so that people become" use-> Available-> willing to use (stick)-> like to use (inseparable) "interactive television services in the habit generate strong popularity is the core work, with two-way interactive services project implementation, we and operators will face three tough core issues:
1 How to create an interactive television operators mature product, so that people no longer feel strange interaction, interactive become a lifestyle ......
2 How to create a good operation of the system, to protect the business of interactive television content safe and efficient operation ......
3 How fast dev (2013-09-20, PPT, 12657KB, 下载2次)
HC-SR04超声波测距模块可提供 2cm-400cm的非接触式距离感测功能，测
距精度可达高到 3mm；模块包括超声波发射器、接收器与控制电路。
基本工作原理：
(1)采用IO 口TRIG 触发测距，给最少10us 的高电平信呈。
(2)模块自动发送8 个40khz 的方波，自动检测是否有信号返回；
(3)有信号返回，通过IO 口ECHO 输出一个高电平，高电平持续的时间就是超声
HC-SR04 ultrasonic ranging module provides 2cm-400cm non-contact distance sensing capabilities, ranging accuracy up to high to 3mm module includes ultrasonic transmitter, receiver and control circuit. The basic working principle: (1) IO port TRIG trigger ranging to the least 10us HIGH letter was. (2) the module automatically sends eight 40khz square wave, automatically detects whether a signal return (3) the signal is fed back through the IO port ECHO outputs a high level, high level duration ultrasound (2013-04-17, PPT, 1429KB, 下载6次)
MICROCHIP公司电容触摸按键的原理介绍
MICROCHIP company introduced the principle of capacitive touch buttons (2009-11-30, PPT, 1174KB, 下载44次)
介绍18b20的所有功能及外接电路，以及其指令集合！
18b20 introduced all the features and the external circuit, as well as its instruction set! (2009-06-09, PPT, 1824KB, 下载1次)
ATmega8的中文资料,很有实用价值的电子文档,能给单片机爱好者带来方便
English information on the ATmega8 very practical value of electronic documents, single-chip lovers can bring convenience to (2009-03-31, PPT, 2097KB, 下载1次)
IDS-SHEER在4月份举行的ARIS7.0发布时的会议PPT，该PPT是结合德国电信管理说明了大中型企业的流程管理
IDS-SHEER in April at the ARIS7.0 issued at the meeting of PPT, The PPT is a combination of Deutsche Telekom management in the large and medium-sized enterprises workflow management (2007-05-18, PPT, 2971KB, 下载5次)