Fordecades,microwavelineofsight(LOS)linkshavebeenoneofthebasictechnolo- gies used to build telephone networks. Until 1980, the fast rollout of high capacity transport networks and deployment of links in areas with challenging geographic characteristics could not be understood without this technology.
上传时间： 2020-05-28
上传用户：shancjb
Wireless networking is undergoing a transformation from what has been primarily a medium for supporting voice traffic between telephones, into what is increasingly becoming a medium for supporting traffic among a variety of digital devices transmitting media of many types (voice, data, images, video. etc.) Wireline networking underwent a similar transformation in the 1990s, which led to an enormous build-up in the capacity of such networks, primarily through the addition of new optical fiber, switches and other infrastructure.
标签： Multiusers Detection Wireless Networks
上传时间： 2020-06-01
上传用户：shancjb
Welcome to the exciting, empowering world of home automation! If you have ever wanted your home to do more than just protect you against the outside elements and want to interface it to the digital domain, this book will show you how. By demonstrating several easy-to-build projects, you will be able to take the skills you learned from this book and expand upon and apply them toward custom home automation projects of your own design.
标签： Programming Your Hom
上传时间： 2020-06-06
上传用户：shancjb
This book is focused on designing and developing Representational State Transfer (REST) platforms in Rails. REST is the architectural style of the Web, consisting of a set of constraints that, applied to components, connectors, and data elements, constitute the wider distributed hypermedia system that we know today: the World Wide Web. There are a few good reasons why it makes more sense to build platforms instead of just products or applications. Platforms are like ecosystems interconnecting different applications, services, users, developers, and partners. Platforms foster innovation through the inputs of their direct collaborators. By providing application programming interfaces (APIs) and software development kits (SDKs), platforms are more customer driven.
标签： Development Building RESTful Rails
上传时间： 2020-06-06
上传用户：shancjb
A power semiconductor module is basically a power circuit of different materials assembled together using hybrid technology, such as semiconduc- tor chip attachment, wire bonding, encapsulation, etc. The materials involved cover a wide range from insulators, conductors, and semiconduc- tors to organics and inorganics. Since these materials all behave differently under various environmental, electrical, and thermal stresses, proper selec- tion of these materials and the assembly processes are critical. In-depth knowledge of the material properties and the processing techniques is there- fore required to build a high-performance and highly reliable power module.
标签： Manufacture Electronic Modules Design Power
上传时间： 2020-06-07
上传用户：shancjb
The chief objective of Electric Machinery continues to be to build a strong foundation in the basic principles of electromechanics and electric machinery. Through all of its editions, the emphasis of Electric Machinery has been on both physical insight and analytical techniques. Mastery of the material covered will provide both the basis for understanding many real-world electric-machinery applications as well as the foundation for proceeding on to more advanced courses in electric machinery design and control.
上传时间： 2020-06-10
上传用户：shancjb
)Armature windings of the electric motor for NO.2 deck cargo winch found low insulation. Windings re-winded,painted and baked dry. (2) NO.1 main air compressor failed to build up pressure.The machine disassembled, cleaned and inspected. The discharge valve plate found broken. The valve palte renewed and running trials tested after being reassembled.
标签： 答案
上传时间： 2020-07-14
上传用户：
Build a Universal Coil Winding Machine by David J. Gingery (z-lib.org).pdf
标签： 绕线机
上传时间： 2022-01-15
上传用户：
因此，您想编写一个内核模块。您知道C，您已经编写了一些可以作为进程运行的常规程序，现在您想知道真正的动作在哪里，一个通配指针可以擦掉文件系统，核心转储意味着重新启动。内核模块到底是什么？模块是可以根据需要加载和卸载的代码段。它们扩展了内核的功能，而无需重新引导系统。例如。模块驱动程序的一种类型是设备驱动程序，它允许内核访问没有模块的系统硬件，我们将不得不构建单片内核并将新功能直接添加到内核映像中，除了具有更大的内核之外，这还具有缺点每次我们想要新功能时都要求我们重建并重新启动内核的过程So, you want to write a kernel module. You know C, you, ve written a few normal programs to run as processes, and now you want to get to where the real action is, to where a single wild pointer can wipe out your file system and a core dump means a reboot.What exactly is a kernel module? Modules are pieces of code that can be loaded and unloaded into th upon demand. They extend the functionality of the kernel without the need to reboot the system. For example.one type of module is the device driver, which allows the kernel to access hardware connected to the syste without modules, we would have to build monolithic kernels and add new functionality directly into the em ernel image, Besides having larger kernels
标签： linux
上传时间： 2022-03-30
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STC8系列 STC15系列STCMCU Protel_Altium原理图PCB器件封装库文件,包含了 STC15 系列和 STC8A、8F、8G、8H 系列 MCU 的电路图符号 库和 pcb 封装库。库文件是用 Altium designer 20.1.10 build 176 版制作的，同时另存为 4.0 和 5.0 版 本；用 protel99se 打开 4.0 版本后再另存为 3.0 版本。以便低版本的 altium 软件可以打 开或者导入，如 protel 99se。同样更高版本的 altium designer 请尝试直接打开或者导入。 尽管 3.0 版本的 PCB 库文件已经是用 protel99se 另存为得到的，但是反过来打开 3.0 版本的库还是可能偶尔出错，原因不明。建议直接打开 4.0 版本（protel99 所用的版本） 的库文件。AD原理图库文件器件列表： 85 个STC15F101W_SOP8_DIP8STC15F2K60S2_PDIP40 STC15F2K60S2_PLCC44 STC15F2K60S2_QFP32 STC15F2K60S2_QFP44STC15F2K60S2_SOP28_SKDIP28STC15F2K60S2_SOP32 STC15F2K60S2_TSSOP20STC15F408AD_QFP32STC15F408AD_SOP28_SKDIP28STC15W104SW_SOP16_DIP16STC15W10x_DIP8_SOP8_DFN8STC15W1K08PWM_LQFP32STC15W1K08PWM_SOP28STC15W1K16S_LQFP32 STC15W1K16S_LQFP44 STC15W1K16S_PDIP40STC15W1K16S_PLCC44 STC15W1K16S_SOP28_SKDIP28STC15W1K16S_SOP32 STC15W1K16S_TSSOP20STC15W1K20S-LQFP64 STC15W201S_SOP16_DIP16STC15W201S_SOP8 STC15W2K60S2_LQFP32STC15W2K60S2_LQFP44 STC15W2K60S2_PDIP40 STC15W2K60S2_PLCC44 STC15W2K60S2_SOP28_SKDIP28STC15W2K60S2_SOP32STC15W401AS_QFN28 STC15W401AS_SOP16_DIP16STC15W401AS_SOP20_DIP20 _TSSOP20STC15W401AS_SOP28_TSSOP28_SKDIP28STC15W404S_LQFP32_QFN32STC15W404S_LQFP44 STC15W404S_PDIP40STC15W404S_PLCC44 STC15W404S_SOP28_SKDIP28STC15W404S_SOP32 STC15W408AD_SOP16_DIP16STC15W408AD_SOP20_DIP20_LSSOP20STC15W408AD_SOP28_SKDIP28STC15W408S_LQFP32STC15W408S_LQFP44 STC15W408S_PDIP40 STC15W408S_PLCC44 STC15W408S_SOP28_SKDIP28STC15W408S_SOP32 STC15W4K60S4_LQFP32 STC15W4K60S4_LQFP44STC15W4K60S4_LQFP48 STC15W4K60S4_LQFP64 STC15W4K60S4_PDIP40 STC15W4K60S4_PLCC44 STC15W4K60S4_SOP28_SKDIP28STC15W4K60S4_SOP32 STC16F32K128-64PINSTC8A4K64S2A12_LQFP44STC8A4K64S2A12_LQFP48STC8A4K64S2A12_LQFP64STC8A4K64S2A12_PDIP40STC8A8K64S4A12_LQFP44STC8A8K64S4A12_LQFP48STC8A8K64S4A12_LQFP64STC8A8K64S4A12_PDIP40STC8F2K64S2_LQFP32 STC8F2K64S2_LQFP44 STC8F2K64S2_PDIP40 STC8F2K64S4_LQFP32 STC8F2K64S4_LQFP44 STC8F2K64S4_PDIP40STC8G1K08-QFN20 STC8G1K08-SOP16 STC8G1K08-SOP8 STC8G1K08-TSSOP20 STC8G1K08A-SOP8 STC8G1K08T-TSSOP20 STC8G2K64S2-48PINSTC8G2K64S4-48PIN STC8H1K08-QFN20 STC8H1K08-TSSOP20 STC8H1K28-32PIN STC8H8K64U-48PIN STC8H8K64U-64PIN AD PCB库文件封装列表： 31个DFN8(3x3mm)DFN8(4x4mm)DIP8DIP16DIP20DIP40LQFP32LQFP44LQFP48LQFP64LLQFP64SLQFP64S(12x12)LSSOP20PLCC44PQFP44QFN20(3x3mm)QFN28QFN32QFN32(4x4mm)QFN48QFN48(6X6mm)QFN64QFN64(8X8mm)SKDIP28SOP8SOP16SOP20SOP28SOP32TSSOP20TSSOP28
上传时间： 2022-04-16
上传用户：bluedrops
