国产芯片“芯海”36 引脚 8 位 OTP ROM 单片机CSU8RP1185D产品说明
Product description of csu8rp1185d single chip csu8rp1185d with 36 pin 8-bit OTP ROM of domestic chip "core sea" (2020-04-09, PDF, 2051KB, 下载1次)
基于大规模MIMO 基本架构，探讨了信道建模和系统性能分析、信道状态信
息获取技术、多用户上下行无线传输技术等大规模MIMO 传输关键技术；认为利用
大规模阵列天线的多用户多输入多输出（MIMO）传输，将显著提升无线通信系统的
频谱效率及功率效率。
Based on the basic architecture of large-scale MIMO, channel modeling, system performance analysis and channel state information are discussed Information acquisition technology, multi-user upstream and downstream wireless transmission technology and other key technologies of large-scale MIMO transmission;Think that using Multi-user multi-input multi-output (MIMO) transmission of large-scale antenna arrays will significantly improve the performance of wireless communication systems Spectral efficiency and power efficiency. (2020-03-10, PDF, 195KB, 下载5次)
IPC-WHMA-A-620D EN线缆及线束组件的要求与验收国际标准
IPC/WHMA-A-620D is the only industry-consensus standard for Requirements and Acceptance of Cable and Wire Harness Assemblies. IPC/WHMA-A-620D describes materials, methods, tests and acceptance criteria for producing crimped, mechanically secured and soldered interconnections and the related assembly activities associated with cable and harness assemblies.
IPC/WHMA-A-620D was developed by IPC and the Wire Harness Manufacturers Association (WHMA) (An affiliate of IPC). (2020-02-10, PDF, 1406KB, 下载5次)
语音端点检测是语音信号处理的基础，为了提高在低信噪比及非平稳噪声下语音端点检测的准确性，提出了一种基于长时信号功率谱变化的语音特征，利用阈值判决法验证了这一特征在语音端点检测中的应用前景。
Speech endpoint detection is the basis of speech signal processing. In order to improve the accuracy of speech endpoint detection in low SNR and non-stationary noise, a speech feature based on the power spectrum change of long-term signal is proposed. The application prospect of this feature in speech endpoint detection is verified by threshold decision method. (2019-10-29, PDF, 2002KB, 下载1次)
本文件为一套完成的dc综合学习教程，有中文的也有英文版的，还有个人笔记和重点标注，非常全面，我做综合10年的经验
This document is a complete set of dc comprehensive learning courses, some in Chinese and English, and personal notes and key notes. It is very comprehensive, and I have done a comprehensive 10 years of experience (2019-03-25, PDF, 12221KB, 下载1次)
以永磁体励磁多极直驱式同步风力发电机组(PMSG)为对象，建立了包括风力机模型、传动系统模型和发电机模型的D—PMsG数学模型，提出了风力机桨距角和发电机转速的控制策略
A d-pmsg mathematical model including wind turbine model, transmission system model and generator model was established, and the control strategy of pitch Angle and generator speed was proposed (2019-02-27, PDF, 444KB, 下载24次)
TAPD,让协作更敏捷
一站式敏捷研发协作云平台
凝聚腾讯研发方法及敏捷实践精髓
助力企业研发更高效、协作更敏捷
TAPD, Make Collaboration Agile
One-stop Agile R&D Collaborative Cloud Platform
Condense Tencent's R&D methods and the quintessence of agile practice
Helping enterprises to develop more efficiently and collaborate more agilely (2018-12-13, PDF, 1891KB, 下载1次)
CMT2300A 是一款超低功耗，高性能，适用于各种127 至
1020 MHz 无线应用的OOK，(G)FSK 射频收发器。它是
CMOSTEK NextGenRFTM 射频产品线的一部分，这条产品线
包含完整的发射器，接收器和收发器。CMT2300A 的高集成
度，简化了系统设计中所需的外围物料。高达+20 dBm 及-121
dBm 的灵敏度优化了应用的链路性能
CMT2300A is an ultra low power, high performance, suitable for all 127 to
1020 MHz wireless application OOK, (G) FSK RF transceiver. It is
CMOSTEK NextGenRFTM RF product line part of this product line
Contains a complete transmitter, receiver and transceiver. Gao Jicheng of CMT2300A
It simplifies the peripheral materials needed in system design. Up to +20 dBm and -121
The sensitivity of dBm optimizes the link performance of the application (2018-04-19, PDF, 1513KB, 下载4次)
Many applications require tracking of complex 3D objects. These
include visual servoing of robotic arms on specific target objects, Augmented
Reality systems that require real-time registration of the object
to be augmented, and head tracking systems that sophisticated interfaces
can use. Computer Vision offers solutions that are cheap, practical
and non-invasive.
Many applications require tracking of complex 3D objects. These
include visual servoing of robotic arms on specific target objects, Augmented
Reality systems that require real-time registration of the object
to be augmented, and head tracking systems that sophisticated interfaces
can use. Computer Vision offers solutions that are cheap, practical
and non-invasive. (2017-12-12, PDF, 2009KB, 下载2次)
本发明提供了一种电力线载波通信发送电
路，包括滤波电路、功放电路和耦合电路，调制信
号通过所述的滤波电路滤波以后，进入所述的功
放电路放大，经过所述的耦合电路进入电力线信
道中传输。该电力线载波通信发送电路提供通信
频带的信号滤波，阻止其他频段的干扰，功放具有
低输出阻抗、高的输入阻抗，可以有效的用于电力
线载波通信。
Surface Electric telecom (2017-09-21, PDF, 140KB, 下载13次)
针对国内模具行业中应用PowerMill 进行模具电极数控编程的现状以及存在的问题，提出一种基于成组技术的可重用模具电极数控编程方法，并在此方法基础上进行
PowerMill 二次开发，拓展其功能，提高其效率以及准确率，从而降低
模具企业的生产成本。
In view of existing situation and problems in using CAD software as PowerMill to process CNC programming for moldelectrode，
a reusable mold-electrode CNC programming method based on grouping technology was presented． The PowerMill redevelopment
was done based on it to expand the function of PowerMill and to improve its efficiency and accuracy． Thereby the production cost
of mold-electrode in enterprise can be reduced． (2011-12-25, PDF, 734KB, 下载11次)
牛叉公司面试题集之C和C++版本
著名IT企业面试题
Cow' s side cross examination questions set the C and C++ version of the well-known IT companies face questions (2011-11-15, PDF, 723KB, 下载3次)
仓库管理系统设计说明书，是在分析中小型企业库存管理流程资料的基础上，根据《仓库管理系统需求说明书》而编写的。
Warehouse management system design specifications, analysis of small and medium enterprises in the inventory management process data based on the " warehouse management system requirements specification" and prepared. (2011-10-16, PDF, 633KB, 下载11次)
本文首先提出了基于接收信干比的局部和全局算法，在次基础上提出了一种自适应接纳门限算法，其基本出发点是在保证系统中断性能的前提下，尽可能降低系统阻塞概率，充分利用系统容量资源。
This paper proposes received signal to interference ratio based on the local and global algorithms, based on the second admission, an adaptive threshold algorithm, the basic starting point is to interrupt the performance to ensure that the system under the premise of the system blocking probability as low as possible, fully system capacity utilization of resources. (2011-05-09, PDF, 1725KB, 下载10次)
变电站通信网络和系统
第 7-1 部分:变电站和馈线设备的基本通 信结构 原理和模型
Communication networks and systems in substations Part 7-1: substation and feeder equipment structure principle and the basic model of communication (2011-05-09, PDF, 488KB, 下载3次)
MAX220–MAX249系列线驱动器/接收器，专为EIA/TIA-
232E以及V.28/V.24通信接口设计，尤其是无法提供±12V
电源的应用。
这些器件特别适合电池供电系统，这是由于其低功耗
关断模式可以将功耗减小到5μW以内。MAX225、
MAX233、MAX235以及MAX245/MAX246/MAX247
不需要外部元件，推荐用于印刷电路板面积有限的
应用。
MAX220-MAX249 family of line driver/receiver, designed for EIA/TIA-232E and V.28/V.24 communication interface design, especially unable to provide ± 12V power supply applications. These devices are particularly suitable for battery-powered systems, this is because of its low-power shutdown mode power consumption can be reduced to less than 5μW. MAX225, MAX233, MAX235 and MAX245/MAX246/MAX247 the need for external components, recommended for the limited area of the printed circuit board applications. (2008-12-24, PDF, 520KB, 下载3次)
戴尔大客户员工采购指南
1.什么是员工采购?
EPP- Employee Purchase Program (员工采购计划), 是戴尔为大客户公司员工专门定制的采购计划，优惠提供高性价比的戴尔电脑及外设产品：在网
上最低促销价基础上再额外享受3％-5％现金折扣（特价品及有特殊说明的产品除外）, 并可以随心选择升级方案和更好的服务。
2.可以享受到什么样的优惠?
折扣机型:Inspiron & Vostro& XPS
单台机器额小于RMB 13999, 每个订单可打3％折扣（订单可含SNP&Kits等产品）
单台机器额大于RMB 13999, 每个订单可打5％折扣（订单可含SNP&Kits等产品）
3.如何定购?
1). 登陆戴尔官方网站:www.dell.com.cn 或参阅员工采购指南挑选机型
2). 致电或邮件联系Dell公司员工采购专职客户经理，为您提供咨询及订购服务
3).专享折扣订单确认及付款。付款方式：信用卡、网上银行转帐、银行电汇
4).需传真如下资料给客户经理，方便完成订购:A 员工签名确认的订单；B贵单位员工牌或工作证明或名片；C信用卡授权表或银行汇款底单
5).等待签收.机器签收后3-4个礼拜注意查收您的信件.发票将以挂号信的方式寄送
err (2008-09-13, PDF, 377KB, 下载2次)
西门子技术支持网站简介 当您在使用西门子产品时可能遇到这样或是那样的问题,没关系,您可以登陆西门 子技术支持与服务网站来查找您需要的信息. 网站链接为: http://www.ad.siemens.com.cn/service/ 登陆网站后,您可以点击相关链接,查找您想要得信息,其中在"网上课堂"可以 下载西门子技术支持工程师编写的常问问题和使用入门文档,点击网页左侧的"技 术资源",进入后将显示语言切换到英文(点击网页的右上角"English"),然后 在"Search"输入框中输入您要查找的相关内容,如下载升级软件包,或是查找错 误代码的解释,或是查找相关产品的信息等等,您可能会找到很多条链接,您可以 从中选择您所需要的内容,您还可以通过点击"Product Support"进入西门子的 产品信息库,通过点击左侧的相关文件链接可以查找到西门子相关产品的详细信 息.如果您经常使用网站信息,您会觉得它已成为您解决问题的得力助手. (2008-07-17, PDF, 2726KB, 下载2次)
http://www.pudn.com/Download/item/id/512470.html
本文是英文数据手册的中文翻译，其目的是方便中国用户的阅读。它无法自动跟随原稿的更新，同时也可能存在翻译上的错误。读者应该以英文原稿为参考以获得更准确的信息。
This is the English manual data the Chinese translation, which aims to facilitate the reading of the Chinese users. It can not automatically follow the updated script, but also there may be translation errors. Readers should refer to the original English to obtain more accurate information. (2007-06-09, PDF, 2369KB, 下载6次)
pcf8563的中文技术资料,不知道具体上载到哪儿,因此放入其他类中,希望对大家有所帮助!
pcf8563 Chinese technical data and do not know where specific uploading, Add other category, We want to help! (2006-08-22, PDF, 334KB, 下载85次)