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calculation

用單片機配置FPGA—PLD設計技巧

用單片機配置FPGA—PLD設計技巧 Configuration/Program Method for Altera Device Configure the FLEX Device You can use any Micro-Controller to configure the FLEX device–the main idea is clocking in ONE BITof configuration data per CLOCK–start from the BIT 0􀂄The total Configuration time–e.g. 10K10 need 15K byte configuration file•calculation equation–10K10* 1.5= 15Kbyte–configuration time for the file itself•15*1024*8*clock = 122,880Clock•assume the CLOCK is 4MHz•122,880*1/4Mhz=30.72msec

標簽： FPGA PLD 用單片機設計技巧

上傳時間： 2013-10-09

上傳用戶：a67818601
帶通濾波器設計計算

摘　要:用一種新的思路和方法,先計算低通、再計算高通濾波器的有關參數,然后組合成帶通濾波器.關鍵詞:濾波器;參數;新思路中圖分類號: TN713. 5 　文獻識別碼:B 　文章編號:1008 - 1666 (1999) 04 - 0089 - 03A New Consideration of the Band Filter’s calculationGuo Wencheng( S hao Yang B usiness and Technology school , S haoyang , Hunan ,422000 )Abstract :This essay deals with a new method of calculating the band filters - first calculatingthe relevant parameters of low - pass filters ,then calculating the ones of high - pass filters.Key words :filter ; parameters ;new considercation八十年代后,信息產業得到了迅猛發展. 帶通濾波器在微波通信、廣播電視和精密儀器設備中得到了廣泛應用. 帶通濾波器性能的優劣,對提高接收機信噪比,防止鄰近信道干擾,提高設備的技術指標,有著十分重要的意義.我在長期的教學實踐中,用切比雪夫型方法設計、計算出寬帶濾波器集中參數元件的數據. 該濾波器可運用在檢測微波頻率的儀器和其他設備中. 再將其思路和計算方法介紹給大家,供參考.

標簽： 帶通濾波器設計計算

上傳時間： 2014-12-28

上傳用戶：Yukiseop
基于以太網的虛擬示波器設計

為提升虛擬儀器傳輸速率與實時性能，擴展監測范圍，在VC的軟件平臺上設計了一種全功能虛擬示波器。與傳統虛擬示波器相比，該系統采用嵌入式系統完成信號采集，采用工業以太網為傳輸介質，通過線性插值算法和多線程編程思想，實現波形顯示、參數計算、頻譜分析以及波形存儲及回放功能。實驗結果表明，該虛擬示波器可以實現20 kHz采樣頻率下的波形精確顯示，達到預期的各項指標。 Abstract: o enhance the transfer rate and real-time of virtual instrument performance， expand scope of monitoring， this paper uses the VCs software platform to design a fully functional virtual oscilloscope. Compared with traditional virtual oscilloscope， this system adopts the embedded system to complete the data acquisition， industrial Ethernet as the transmission medium used by the linear interpolation algorithm and multi-threaded programming ideas， namely to achieve waveform display， parameter calculation， spectrum analysis and waveform storage and playback. Experimental results show that the virtual oscilloscope can accurately display the waveform with 20kHz sampling frequency， and achieve the desired targets.

標簽： 以太網虛擬波器設計

上傳時間： 2013-11-25

上傳用戶：wbwyl
計算FR4上的差分阻抗(PDF)

calculation of the Differential Impedance of Tracks on FR4 substrates There is a discrepancy between calculated and measured values of impedance for differential transmission lineson FR4. This is especially noticeable in the case of surface microstrip configurations. The anomaly is shown tobe due to the nature of the substrate material. This needs to be considered as a layered structure of epoxy resinand glass fibre. calculations, using Boundary Element field methods, show that the distribution of the electricfield within this layered structure determines the apparent dielectric constant and therefore affects theimpedance. Thus FR4 cannot be considered to be uniform dielectric when calculating differential impedance.

標簽： FR4 計算差分阻抗

上傳時間： 2013-10-18

上傳用戶：masochism
PCB電源設計經典資料

|Introduction􀂄􀂄 Basic Concept􀂄􀂄 Tips to layout Power circuit􀂄􀂄 Type of Power circuit Basic Concept􀂄􀂄 Maximum Current calculation􀂄􀂄 Resistance of Copper􀂄􀂄 ideal power supply & noise􀂄􀂄 Capacitor & Inductor􀂄􀂄 Power consumption􀂄􀂄 Function of power circuit

標簽： PCB 電源設計

上傳時間： 2013-12-10

上傳用戶：JIEWENYU
For the incomplete methods, we kept the representation of the queens by a table and the method of ca

For the incomplete methods, we kept the representation of the queens by a table and the method of calculation to determine if two queens are in conflict, which is much faster for this kind of problems than the representation by a matrix. heuristics: descent. Tests: 100 queens in less than 1 second and 67 iterations. 500 queens in 1 second and 257 iterations. 1000 queens in 11 seconds and 492 iterations. heuristics: Simulated annealing. Tests: 100 queens in less than 1 second and 47 iterations. 500 queens in 5 seconds and 243 iterations. 1000 queens in 13 seconds and 497 iterations. heuristics: based on Simulated Annealing. Tests: 100 queens in less than 1 second and 60 iterations. 500 queens in 1 second and 224 iterations. 1000 queens in 5 seconds and 459 iterations. 10 000 queens in 20 minutes 30 seconds and 4885 iterations.

標簽： the representation incomplete methods

上傳時間： 2015-05-05

上傳用戶：1159797854
Wavelets have widely been used in many signal and image processing applications. In this paper, a ne

Wavelets have widely been used in many signal and image processing applications. In this paper, a new serial-parallel architecture for wavelet-based image compression is introduced. It is based on a 4-tap wavelet transform, which is realised using some FIFO memory modules implementing a pixel-level pipeline architecture to compress and decompress images. The real filter calculation over 4 · 4 window blocks is done using a tree of carry save adders to ensure the high speed processing required for many applications. The details of implementing both compressor and decompressor sub-systems are given. The primarily analysis reveals that the proposed architecture, implemented using current VLSI technologies, can process a video stream in real time.

標簽： applications processing Wavelets widely

上傳時間： 2014-01-22

上傳用戶：hongmo
* CONSTRAINTS * This module does not handle data which is considered out of range by the * appli

* CONSTRAINTS * This module does not handle data which is considered out of range by the * application(i.e. fixed constants which represent error condition) * * Maximum weight value must be limited to 128 to prevent an overflow * condition during the calculation. * * The internal data type must be large enough to handle the calculations. * The maximum possible internal value * = Max Input Value * (weight - 1) + Max Input Value * If a maximum weight of 128 is used, the internal data type should be 2 * times the size of the input data type.

標簽： CONSTRAINTS considered module handle

上傳時間： 2015-09-07

上傳用戶：qunquan
matlab雨流算法。The rain flow algorithm code has been prepared according to the ASTM standard (Standard p

matlab雨流算法。The rain flow algorithm code has been prepared according to the ASTM standard (Standard practices for cycle counting in fatigue analysis) and optimized considering the calculation time.

標簽： algorithm according Standard prepared

上傳時間： 2016-02-07

上傳用戶：上善若水
The jxcell allows any Java developer to automate any manual spreadsheet process within their organiz

The jxcell allows any Java developer to automate any manual spreadsheet process within their organization. Automate the delivery of Excel reports and give your users the data they need in the format they want. Web-enable your existing spreadsheet business logic as a scalable server-side calculation engine. embed Excel-compatible grids in applets and applications to automate spreadsheet data entry processes. enables you to integrate Excel-compatible spreadsheet functionality in your Windows applications without relying on Excel or writing VBA code.

標簽： spreadsheet any developer automate

上傳時間： 2016-04-29

上傳用戶：xsnjzljj