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单片机编程 深入理解SD卡

SD 卡(Secure Digital Memory Card)是一种为满足安全性、容量、性能和使用环境等各方面的需求而设计的一种新型存储器件,SD 卡允许在两种模式下工作,即SD 模式和SPI 模式,本系统采用SPI 模式。本小节仅简要介绍在SPI 模式下,STM32 处理器如何读写SD 卡,如果读者如希望详细了解SD 卡,可以参考相关资料。 ...
https://www.eeworm.com/dl/502/28927.html
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单片机编程 TLC1549串口传输与单片机的AD设计

详细介绍了TLC1549系列模数转换器的特点及工作原理,然后根据TLC1549的工作时序和A/D转换原理针对实际问题编写了详细的汇编语言程序。 Abstract:  A basic principle and characteristic of TLC1549 analog-to-digital converter are introduced? detailedly in this article.Through engineering-oriented illust ...
https://www.eeworm.com/dl/502/29331.html
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技术书籍 SDH光传输技术_徐少敏

SDH[1](Synchronous Digital Hierarchy,同步数字体系)光端机容量较大,一般是16E1到4032E1。SDH是一种将复接、线路传输及交换功能融为一体、并由统一网管系统操作的综合信息传送网络,是美国贝尔通信技术研究所提出来的同步光网络(SONET)。 ...
https://www.eeworm.com/dl/537/36829.html
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其他书籍 The ability to write efficient, high-speed arithmetic routines ultimately depends upon your knowled

The ability to write efficient, high-speed arithmetic routines ultimately depends upon your knowledge of the elements of arithmetic as they exist on a computer. That conclusion and this book are the result of a long and frustrating search for information on writing arithmetic routines for real-time ...
https://www.eeworm.com/dl/542/224684.html
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通讯编程文档 Abstract-The effect of the companding process on QAM signals has been under investigation for the p

Abstract-The effect of the companding process on QAM signals has been under investigation for the past several years. The compander, included in the PCM telephone network to improve voice performance, has an unusual affect on digital QAM data signals which are transmitted over the same channel. The ...
https://www.eeworm.com/dl/646/310216.html
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书籍 3G,+4G+and+Beyond–BRINGING NETWORKS

In recent years, cellular voice networks have transformed into powerful packet-switched access networks for both voice communication and Internet access. Evolving Universal Mobile Telecommunication System (UMTS) networks and first Long Term Evolution (LTE) installations now deliver bandwidths of sev ...
https://www.eeworm.com/dl/521785.html
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书籍 IP Multimedia Subsystem(IMS) Handbook

Fixed-mobile.convergence.and.voice-data.networks.have.merged.next-gen- eration,.value-added.applications.and.integrated.multimedia.services,.com- bining. Web. browsing,. instant. messaging,. presence,. voice. over. IP,. video. conferencing,. application. sharing,. telephony,. unified. messaging,. mu ...
https://www.eeworm.com/dl/521945.html
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技术资料 nRF51802串口透传主从蓝牙4.0模块

文档介绍了一个基于Nordic芯片nRF51802的蓝牙4.0模块,模块可以做主做从,接口支持UART串口,感兴趣的可以下载来看下The VD-B501 is a highly integrated Bluetooth 4.0 BLE module, designed for high data rate, short-range wireless communication in the 2.4GHz ISM band. The module is based on Nordic nRF51802 rad ...
https://www.eeworm.com/dl/845765.html
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技术资料 TEF665X 用户指南

TEF665XA (‘Atomic-2’) is a series of unparalleled single-chip car radio devices with a mainstream performance and feature set. The Atomic-2 series consists of two variants; TEF6657A and TEF6659A. The TEF6657A (Atomic-2 Premium) offers worldwide FM and full AM reception including short wave (SW) up ...
https://www.eeworm.com/dl/848301.html
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技术资料 低成本24 位模数芯片ADS1211 在地震仪器中的设计及应用

介绍了一种高性能低成本24位模数芯片ADS1211的结构及特点。阐述了芯片ADS1211与单片机的接口电路设计与实现;并介绍了此芯片控制软件的流程设计和在实际地震仪器设计中的应用案例。The structure and characteristics of a high performance and low cost 24-bit analog-digital chip ADS1211 are introduced. This paper de ...
https://www.eeworm.com/dl/894699.html
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