ADS – Advanced Design System,由美國Agilent 公司推出的微波電路和通信系統仿真軟件,是當今業界最流行的微波射頻電路、通信系統、RFIC 設計軟件.
上傳時間: 2013-10-19
上傳用戶:維子哥哥
The LPC4350/30/20/10 are ARM Cortex-M4 based microcontrollers for embeddedapplications. The ARM Cortex-M4 is a next generation core that offers systemenhancements such as low power consumption, enhanced debug features, and a highlevel of support block integration.The LPC4350/30/20/10 operate at CPU frequencies of up to 150 MHz. The ARMCortex-M4 CPU incorporates a 3-stage pipeline, uses a Harvard architecture withseparate local instruction and data buses as well as a third bus for peripherals, andincludes an internal prefetch unit that supports speculative branching. The ARMCortex-M4 supports single-cycle digital signal processing and SIMD instructions. Ahardware floating-point processor is integrated in the core.The LPC4350/30/20/10 include an ARM Cortex-M0 coprocessor, up to 264 kB of datamemory, Advanced configurable peripherals such as the State Configurable Timer (SCT)and the Serial General Purpose I/O (SGPIO) interface, two High-speed USB controllers,Ethernet, LCD, an external memory controller, and multiple digital and analog peripherals
上傳時間: 2013-10-28
上傳用戶:15501536189
ARM(Advanced RISC Machines)是微處理器行業的一家知名企業,設計了大量高性能、廉價、耗能低的RISC處理器、相關技術及軟件。技術具有性能高、成本低和能耗省的特點。適用于多種領域,比如嵌入控制、消費/教育類多媒體、DSP和移動式應用等。 ARM將其技術授權給世界上許多著名的半導體、軟件和OEM廠商,每個廠商得到的都是一套獨一無二的ARM相關技術及服務。利用這種合伙關系,ARM很快成為許多全球性RISC標準的締造者。
上傳時間: 2013-11-19
上傳用戶:偷心的海盜
核磁共振(NMR)是重要的檢測手段和分析手段之一。隨著其應用領域的拓展和 深入,核磁共振譜儀技術也不斷地發展和完善。常規商業化譜儀雖然功能強大,但 是譜儀結構復雜,體積龐大,價格昂貴,因此限制了NMR技術的應用場合。而在許 多應用場合,比如教學中,往往需要一種結構簡單,體積小巧,價格便宜,集成度 高的一體化核磁共振譜儀。 而隨著A跚(Advanced RISC Machines)技術的發展與成熟,本文提出了一種用 于磁共振成像系統的,基于A剛的一體化核磁共振成像譜儀的設計方案。提供了譜 儀各部分的實際性能測試的結果和譜儀整體工作的成像實驗結果,并對研制和實驗 結果進行了討論。 本論文主要內容如下: 第一,主要介紹了核磁共振原理,核磁共振成像的原理,核磁共振成像系統的結構。 第二,介紹ARM的概念與基本原理并簡要介紹了相關的軟件。 第三,介紹了一體化譜儀的研制過程,并分別從母板和核心板兩部分的硬件部分設 計與軟件部分設計上進行了相應的描述。 第四,介紹本譜儀系統的性能測試結果,并總結調試心得與現有問題,并對以后提出展望。 有關核磁共振更多知識請查看:醫學影像設備
上傳時間: 2013-11-06
上傳用戶:hanwudadi
英文版RAR密碼破解工具
標簽: Advanced Password Recovery
上傳時間: 2013-10-29
上傳用戶:royzhangsz
Aspen Plus介紹 (物性數據庫) · Aspen Plus ---生產裝置設計、穩態模擬和優化的大型通用流程模擬系統 · Aspen Plus是大型通用流程模擬系統,源于美國能源部七十年代后期在麻省理工學院(MIT)組織的會 戰,開發新型第三代流程模擬軟件。該項目稱為“過程工程的先進系統”(Advanced System for Process Engineering,簡稱ASPEN),并于1981年底完成。1982年為了將其商品化,成立了AspenTech公司,并稱之為Aspen Plus。該軟件經過20多年來不斷地改進、擴充和提高,已先后推出了十多個版本,成為舉世公認的標準大型流程模擬軟件,應用案例數以百萬計。全球各大化工、石化、煉油等過程工業制造企業及著名的工程公司都是Aspen Plus的用戶。 它以嚴格的機理模型和先進的技術贏得廣大用戶的信賴,它具有以下特性: 1. ASPEN PLUS有一個公認的跟蹤記錄,在一個工藝過程的制造的整個生命周期中提供巨大的經濟效益,制造生命周期包括從研究與開發經過工程到生產。 2. ASPEN PLUS使用最新的軟件工程技術通過它的Microsoft Windows圖形界面和交互式客戶-服務器模擬結構使得工程生產力最大。 3. ASPEN PLUS擁有精確模擬范圍廣泛的實際應用所需的工程能力, 這些實際應用包括從煉油到非理想化學系統到含電解質和固體的工藝過程。 4. ASPEN PLUS是AspenTech的集成聰明制造系統技術的一個核心部分, 該技術能在你公司的整個過程工程基本設施范圍內捕獲過程專業知識并充分利用。 在實際應用中,ASPEN PLUS可以幫助工程師解決快速閃蒸計算、設計一個新的工藝過程、查找一個原油加工裝置的故障或者優化一個乙烯全裝置的操作等工程和操作的關鍵問。
上傳時間: 2013-11-16
上傳用戶:我干你啊
英文版RAR密碼破解工具
標簽: Advanced Password Recovery
上傳時間: 2013-10-13
上傳用戶:wangzeng
This application note covers the design considerations of a system using the performance features of the LogiCORE™ IP Advanced eXtensible Interface (AXI) Interconnect core. The design focuses on high system throughput through the AXI Interconnect core with F MAX and area optimizations in certain portions of the design. The design uses five AXI video direct memory access (VDMA) engines to simultaneously move 10 streams (five transmit video streams and five receive video streams), each in 1920 x 1080p format, 60 Hz refresh rate, and up to 32 data bits per pixel. Each VDMA is driven from a video test pattern generator (TPG) with a video timing controller (VTC) block to set up the necessary video timing signals. Data read by each AXI VDMA is sent to a common on-screen display (OSD) core capable of multiplexing or overlaying multiple video streams to a single output video stream. The output of the OSD core drives the DVI video display interface on the board. Performance monitor blocks are added to capture performance data. All 10 video streams moved by the AXI VDMA blocks are buffered through a shared DDR3 SDRAM memory and are controlled by a MicroBlaze™ processor. The reference system is targeted for the Virtex-6 XC6VLX240TFF1156-1 FPGA on the Xilinx® ML605 Rev D evaluation board
上傳時間: 2013-11-23
上傳用戶:shen_dafa
The power of programmability gives industrial automation designers a highly efficient, cost-effective alternative to traditional motor control units (MCUs)。 The parallel-processing power, fast computational speeds, and connectivity versatility of Xilinx® FPGAs can accelerate the implementation of Advanced motor control algorithms such as Field Oriented Control (FOC)。 Additionally, Xilinx devices lower costs with greater on-chip integration of system components and shorten latencies with high-performance digital signal processing (DSP) that can tackle compute-intensive functions such as PID Controller, Clark/Park transforms, and Space Vector PWM. The Xilinx Spartan®-6 FPGA Motor Control Development Kit gives designers an ideal starting point for evaluating time-saving, proven, motor-control reference designs. The kit also shortens the process of developing custom control capabilities, with integrated peripheral functions (Ethernet, PowerLink, and PCI® Express), a motor-control FPGA mezzanine card (FMC) with built-in Texas Instruments motor drivers and high-precision Delta-Sigma modulators, and prototyping support for evaluating alternative front-end circuitry.
上傳時間: 2013-10-28
上傳用戶:wujijunshi
An easy, yet highly-configurable iptables-based firewall solution designed for everybody from home users to network admins. Functionality for IPv6, tunneling, IPSec, and Advanced routing is planned.
標簽: highly-configurable iptables-based everybody designed
上傳時間: 2014-10-11
上傳用戶:huyiming139