香港大学《操作系统》课程的实验，由国际著名教授dr. C.L.Wang主讲，附带源代码
上传时间： 2013-12-25
上传用户：kelimu
管脚号 管脚名称 LEVER 管脚功能描述 1 VSS 0V 电源地 2 VDD 5.0V 电源电压 3 VEE 5.0V~(-13V) 液晶显示器驱动电压 4 D/I H/L D/I=“H”,表示DB7~DB0为显示数据 D/I=“L”,表示DB7~DB0为显示指令数据 5 R/W H/L R/W=“H”,E=“H”,数据被读到DB7~DB0 R/W=“L”,E=“H→L”, DB7~DB0的数据被写到IR或dr 6 E H/L 使能信号：R/W=“L”,E信号下降沿锁存DB7~DB0 R/W=“H”,E=“H” drAM数据读到DB7~DB0 7 DB0 H/L 数据线 8 DB1 H/L 数据线 9 DB2 H/L 数据线 10 DB3 H/L 数据线 11 DB4 H/L 数据线 12 DB5 H/L 数据线 13 DB6 H/L 数据线 14 DB7 H/L 数据线 15 CS1 L （19264A) 选择IC1,即（左）64列 16 RESET L 复位控制信号，RST=0有效 17 CS2 L （19264A) 选择IC2,即（中）64列 18 CS3 L （19264A) 选择IC3,即（右）64列 19 V0 -9V Negative Voltage for LCD driving 20 LED+ +5.0V The LED supply
上传时间： 2014-01-01
上传用户：541657925
unit ScardCL {**************************************************************************} { } { This C DLL header file first (automatic) conversion generated by: } { HeadConv 4.0 (c) 2000 by Bob Swart (aka dr.Bob - www.drbob42.com) } { Final Delphi-Jedi (Darth) command-line units edition } { } { Generated Date: 07.04.2009 } { Generated Time: 05:10:54
上传时间： 2017-06-18
上传用户：13215175592
A few years ago I became interested in first person shooter games and in particular how the world levels are created and rendered in real time. At the same time I found myself in between jobs and so I embarked on an effort to learn about 3D rendering with the goal of creating my own 3D rendering engine. Since I am a developer and not an artist I didn’t have the skills to create my own models, levels, and textures. So I decided to attempt to write a rendering engine that would render existing game levels. I mainly used information and articles I found on the web about Quake 2, Half Life, WAD and BSP files. In particular I found the Michael Abrash articles that he wrote for dr. Dobbs magazine while working at Id to be very illuminating.
标签： interested particular shooter became
上传时间： 2013-12-13
上传用户：hanli8870
无线电CW通联 基本Q短语，通联实例 A: CQCQCQ DE BA4ALC/5 BA4ALC/5 BA4ALC/5 PSE K B:BA4ALC/5 DE BD4IZL BD4IZL K A:BD4IZL DE BA4ALC/5 GM TNX FER CALL dr OM UR RST 559 55N K B:RR BA4ALC/5 DE BD4IZL GM dr OM TNX 55N RPRT UR 599 5NN FB MY NAME IS YU YU QTH JINAN JINAN BA4ALC/5 DE BD4IZL K A: dr YU OM TNX FB RPRT OP JACK JACK QTH NINGBO NINGBO WX HR IS FINE ES WARM TEMP 20C 20C HW? DE BA4ALC/5 K B:R dr JACK OM WX CLOUDY CLOUDY ES TEMP 15C 15C BT RIG FT80C FT80C ANT DIPOLE DP PWR 100WATTS 1TTW BA4ALC/5 DE BD4IZL K A: BD4IZL DE BA4ALC/5 MY RIG IS IC746PRO IC746PRO ES PWR 100W 1OOW BT ANT 2 ELE YAGI 2ELE YAGI 12MH TNX FER NICE QSO QSL VIA BURO HPE CUAGN BD4IZL DE BA4ALC/5 73 73 GL ES GB TU TU SK.. B:TNX FB CW QSO QSL QRZ.COM CUAGN BA4ALC/5 DE BD4IZL 73 dr JACK TU SK.. A:. B:.
上传时间： 2019-03-05
上传用户：shuyinglee
Micro-Electro-Mechanical Systems (MEMS) are miniature systems composed ofintegratedelectricalandmechanicalpartstosenseand/orcontrolthingsonaµmscale. The concept of MEMS is attributed to Richard Feynman’s famous talk on December 29th, 1959 [2,3]. dr. Feynman foresaw many aspects of future MEMS development with his insight in microphysics. In particular, material properties in the µm scale are differentfrombulkpropertiesandthescalingdownofintegratedcircuits(IC)fabrication technology has been a major driving force of MEMS development.
标签： Performance High MEMS RF
上传时间： 2020-06-06
上传用户：shancjb
It all started rather innocuously. I walked into dr GT Murthy’s office one fine day, andchanged my life. “Doc” was then the General Manager, Central R&D, of a very largeelectrical company headquartered in Bombay. In his new state-of-the-art electronics center,he had hand-picked some of India’s best engineers (over a hundred already) ever assembledunder one roof. Luckily, he too was originally a Physicist, and that certainly helped me gainsome empathy. Nowadays he is in retirement, but I will always remember him as athoroughly fair, honest and facts-oriented person, who led by example. There were severalthings I absorbed from him that are very much part of my basic engineering persona today.You can certainly look upon this book as an extension of what Doc started many years agoin India … because that’s what it really is! I certainly wouldn’t be here today if I hadn’t metDoc. And in fact, several of the brash, high-flying managers I’ve met in recent years,desperately need some sort of crash course in technology and human values from Doc!
标签： 开关电源
上传时间： 2021-11-23
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MAX30102芯片心率血氧传感器模块传感器模块软硬件设计资料包括STM32测试源码AD设计原理图及心率及血氧参考设计资料:参考代码及实验数据工程文件及库心率及血氧参考设计资料芯片数据手册1771.pdf2ES Teck PEMS White Paper.pdf31930_accessories.pdf5273c08fe2b6b_1_4264142A_EN_p.pdfAvant 2120 Brochure.pdfcelyon-1057-daeg.pdfdr. Bob case study for dental.pdfenvitec.pdfgclarke-2015-MASc-thesis.pdfiadt02i4p261.pdfIHE_PCD_Suppl_POI.pdfijcsit2014050679.pdfIMECS2009_pp1537-1540.pdfLuksSwensonPulseOximetryatHighAltitude.pdfMI_CCHD_Screener_Tips_Flier_3-21-13_422078_7.pdfMoon.pdfnotes6.pdfpansw_spo2_sensor.pdfPK_EN_MAsimo2008Product Catalog.pdfpm-60a-spo2-report-4.pdfpulse-oximetry-at-home.pdfpulse-oximetry.pdfpulse.pdfPulseOxFinal_low.pdfpulse_ox.pdfpxc3976461.pdfReusable SpO2 Sensors.pdfSP02-cross-reference-sensor.pdfsprt533.pdfsszb140.pdfview.pdf
上传时间： 2021-11-24
上传用户：fliang
基于FPGA设计的sdram读写测试实验Verilog逻辑源码Quartus工程文件+文档说明，drAM选用海力士公司的 HY57V2562 型号,容量为的 256Mbit,采用了 54 引脚的TSOP 封装, 数据宽度都为 16 位, 工作电压为 3.3V,并丏采用同步接口方式所有的信号都是时钟信号。FPGA型号Cyclone4E系列中的EP4CE6F17C8，Quartus版本17.1。timescale 1ps/1psmodule top(input clk,input rst_n,output[1:0] led,output sdram_clk, //sdram clockoutput sdram_cke, //sdram clock enableoutput sdram_cs_n, //sdram chip selectoutput sdram_we_n, //sdram write enableoutput sdram_cas_n, //sdram column address strobeoutput sdram_ras_n, //sdram row address strobeoutput[1:0] sdram_dqm, //sdram data enable output[1:0] sdram_ba, //sdram bank addressoutput[12:0] sdram_addr, //sdram addressinout[15:0] sdram_dq //sdram data);parameter MEM_DATA_BITS = 16 ; //external memory user interface data widthparameter ADdr_BITS = 24 ; //external memory user interface address widthparameter BUSRT_BITS = 10 ; //external memory user interface burst widthparameter BURST_SIZE = 128 ; //burst sizewire wr_burst_data_req; // from external memory controller,write data request ,before data 1 clockwire wr_burst_finish; // from external memory controller,burst write finish
标签： fpga sdram verilog quartus
上传时间： 2021-12-18
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热计量表MBUS远传总线接线标准1.M-BUS介绍M-Bus（是Paderborn大学的dr.Horst Ziegler与TI公司的Deutschland GmbH和TechemGmbH共同提出的，）专门用于公共事业仪表的总线结构，称Meter-Bus，简称M-Bus.M-Bus仪表总线属于局域网（Local Area Net-work，简称LAN），是处于同一幢建筑或方圆几公里远地域内的专用网络，被用于连接远程监控计算机和工作站、测量仪表等设备，以便资源共享和数据传输。M-Bus仪表总线具有LAN的3个基本特征：（1）范围，（2）传输技术，（3）拓扑结构。LAN具有星形、环形和总线形拓扑结构。M-Bus一般采用总线形拓扑结构。如下图M-Bus仪表总线可以满足由电池供电或远程供电的计量仪表的特殊要求。当计量仪表收到数据发送请求时，将当前测量的数据传送到主站，（主站可以是手持单元、计算机或其它终端），主站定期地读取某幢建筑中安装的计量仪表的数据。一般而言，挂接在仪表总线上的计量仪表的数目可达数百个，数据传输距离达数千米。在总线上传送的数据具有高度的完整性和快速性。通信线选择通常选择2芯1.0mm2的RVVP多股铜线线，电源及通信线复用。网络最远距离不宜超过1000m，最大负载数量不宜超过256户。安装注意事项
上传时间： 2022-06-21
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