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The field of digital communication has evolved rapidly in the past few
decades, with commercial applications proliferating in wireline communi-
cation networks (e.g., digital subscriber loop, cable, fiber optics), wireless
communication (e.g., cell phones and wireless local area networks), and stor-
age media (e.g., compact discs, hard drives). The typical undergraduate and
graduate student is drawn to the field because of these applications, but is
often intimidated by the mathematical background necessary to understand
communication theory.
標(biāo)簽：
Communication
Fundamentals
Digital
of
上傳時(shí)間：
2020-05-27
上傳用戶：shancjb
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Nature is seldom kind. One of the most appealing uses for radio-
telephone systems—communication with people on the move—must over-
come radio transmission problems so difficult they challenge the imagina-
tion. A microwave radio signal transmitted between a fixed base station
and a moving vehicle in a typical urban environment exhibits extreme
variations in both amplitude and apparent frequency.
標(biāo)簽：
Communications
Microwave
Mobile
上傳時(shí)間：
2020-05-28
上傳用戶：shancjb
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Microwave radio network design is a subset of activities that constitute
the overall transmission network design. Transmission networks are
sometimes called transport networks, access networks, or connectivity
networks. For many wireless carriers, microwave is becoming a popu-
lar preference over wireline (leased lines) transport for many reasons,
especially as microwave radio equipment costs decrease and installation
becomes simpler. Low monthly operating costs can undercut those of
typical single (and especially multiple) T1/E1 expenses, proving it to be
more economical over the long term—usually two to four years. Network
operators also like the fact that they can own and control microwave
radio networks instead of relying on other service providers for network
components.
標(biāo)簽：
Transmission
Microwave
Networks
上傳時(shí)間：
2020-05-28
上傳用戶：shancjb
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You probably have heard all about what you can do with the Raspberry Pi. This credit-
card sized computer can be plugged into your TV or any HDMI monitor to replace a
typical computer. This little device is used in many computer projects, DIY electronics
projects and even as a learning tool for kids who want to learn the basics of computer
programming.
標(biāo)簽：
Automation
Projects
Home
上傳時(shí)間：
2020-06-06
上傳用戶：shancjb
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Design for manufacturability and statistical design encompass a number
of activities and areas of study spanning the integrated circuit design and
manufacturing worlds. In the early days of the planar integrated circuit, it was
typical for a handful of practitioners working on a particular design to have
a fairly complete understanding of the manufacturing process, the resulting
semiconductor active and passive devices, as well as the resulting circuit -
often composed of as few as tens of devices. With the success of semiconductor
scaling, predicted and - to a certain extent even driven - by Moore’s law, and
the vastly increased complexity of modern nano-meter scale processes and the
billion-device circuits they allow, there came a necessary separation between
the various disciplines.
標(biāo)簽：
Manufacturability
Statistical
Design
for
and
上傳時(shí)間：
2020-06-10
上傳用戶：shancjb
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Although state of the art in many typical machine learning tasks, deep learning
algorithmsareverycostly interms ofenergyconsumption,duetotheirlargeamount
of required computations and huge model sizes. Because of this, deep learning
applications on battery-constrained wearables have only been possible through
wireless connections with a resourceful cloud. This setup has several drawbacks.
First, there are privacy concerns. Cloud computing requires users to share their raw
data—images, video, locations, speech—with a remote system. Most users are not
willing to do this. Second, the cloud-setup requires users to be connected all the
time, which is unfeasible given current cellular coverage. Furthermore, real-time
applications require low latency connections, which cannot be guaranteed using
the current communication infrastructure. Finally, wireless connections are very
inefficient—requiringtoo much energyper transferredbit for real-time data transfer
on energy-constrained platforms.
標(biāo)簽：
Embedded_Deep_Learning
Algorithms
上傳時(shí)間：
2020-06-10
上傳用戶：shancjb
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基于NE555設(shè)計(jì)的聲音傳感器模塊ALTIUM硬件原理圖+PCB文件，2層板設(shè)計(jì)，大小為29x30mm，Altium Designer 設(shè)計(jì)的工程文件，包括原理圖及PCB文件，可以用Altium(AD)軟件打開或修改，可作為你的產(chǎn)品設(shè)計(jì)的參考。主要器件型號(hào)列表如下：Library Component Count : 8Name Description----------------------------------------------------------------------------------------------------2N3904 NPN General Purpose AmplifierCap CapacitorComponent_1_1 Header 3H Header, 3-Pin, Right AngleLED3 typical BLUE SiC LEDMKF 麥克風(fēng)Res 電阻Res2 Resistor
標(biāo)簽：
ne555
聲音傳感器
上傳時(shí)間：
2021-11-17
上傳用戶：
-
BTS7960大功率直流電機(jī)驅(qū)動(dòng)板ALTIUM設(shè)計(jì)硬件原理圖+PCB文件,2層板設(shè)計(jì)，大小為66*76mm, 包括完整的原理圖和PCB工程文件，可以做為你的設(shè)計(jì)參考。主要器件如下：Library Component Count : 13Name Description----------------------------------------------------------------------------------------------------CPDR 瓷片電容Component_1_1 DG 電感DJDR 電解電容Header 2 Header, 2-PinLED 發(fā)光二極管LED3 typical BLUE SiC LEDLM2576HVT-3.3 Simple Switcher 3A Step Down Voltage RegulatorPZ_2 排針——2RES2 Res 電阻TLP521-1WY2JG 穩(wěn)壓二級(jí)管
標(biāo)簽：
bts7960
大功率
直流電機(jī)驅(qū)動(dòng)
上傳時(shí)間：
2021-11-21
上傳用戶：
-
STM32H750VBT6核心板 ALTIUM設(shè)計(jì)硬件原理圖+PCB文件，包括完整的原理圖和PCB文件，可以做為你的設(shè)計(jì)參考，PCB 2層板設(shè)計(jì)，大小85MM*56MM, 帶SD，DCMI,QSPI,外擴(kuò)flash，以太網(wǎng)，RS485，CAN總線, 主要器件信號(hào)列表如下：Library Component Count : 29Name Description----------------------------------------------------------------------------------------------------AMS1117 三端穩(wěn)壓芯片BAT54C 表貼肖特基二極管C 無(wú)極性貼片電容CRYSTAL_32K CrystalCap CapacitorFPC0.5-24P 貼片F(xiàn)U 貼片保險(xiǎn)絲HR911105Header 2 Header, 2-PinLLAN8720 ETH PHYLED typical RED, GREEN, YELLOW, AMBER GaAs LEDMAX3485PNP PNP三極管Pin HDR2X20 R 貼片電阻Res ResisterSN65HVD230D STM32H750VBT6 Socket SocketTCAP 鉭電容TEST-POINT 測(cè)試點(diǎn)TSW 輕觸開關(guān)USB type C W25Qxx 外置FlashXC6206-3.3 SOT-23,XC6206P332MR,MAX8V,100mAXTAL-4P 4腳無(wú)源晶振XTAL_3225 Crystal OscillatormicroSD
標(biāo)簽：
stm32
pcb
上傳時(shí)間：
2021-11-24
上傳用戶：aben
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STM32F407單片機(jī)開發(fā)板PDF原理圖+AD集成封裝庫(kù)+主要器件技術(shù)手冊(cè)資料:AD集成封裝庫(kù)列表：Library Component Count : 54Name Description----------------------------------------------------------------------------------------------------24C256 AMS1117ATK-HC05 ATK-HC05BAT BEEP BUTTONC CAPCH340G USB2UARTDDB9 DHT11 數(shù)字溫濕度傳感器HEAD2HEAD2*22 HR911105 HS0038Header 16 Header, 16-PinHeader 2 Header, 2-PinHeader 2X2 Header, 2-Pin, Dual rowHeader 3X2 Header, 3-Pin, Dual rowHeader 4 Header, 4-PinHeader 9X2 Header, 9-Pin, Dual rowIS62WV51216 JTAG KEY_M L LAN8720 ETH PHYLED2 typical RED, GREEN, YELLOW, AMBER GaAs LEDLSENS LIGHT SENSL_SOP MAX3232 MAX3485 MIC MOS-P IRLML6401/SI2301MP2359 DC DC Step Down ICMPU6050 9軸運(yùn)動(dòng)處理傳感器NPN 8050/BCW846/BCW847NRF24L01 PHONE_M PNP 8550/BCW68POW R SMBJ TVSSN65HVD230D STM32F407ZET6 STM32F407ZET6TEST-POINT 測(cè)試點(diǎn)TFT_LCD TPAD ALIENTEK TPADUSB5USB_A_90 USB-A-90W25X16
標(biāo)簽：
stm32f407
單片機(jī)
封裝
上傳時(shí)間：
2021-12-15
上傳用戶：ttalli
