一個簡單的進銷存系統(tǒng)，用power builder編寫，SQL數(shù)據(jù)庫
標簽： 進銷存系統(tǒng)
上傳時間： 2015-04-30
上傳用戶：123啊
Chipcon CC2420 reference design w/PA board rev B CC2420_w_PA_PCB.ZIP FABRICATION.PHO - fabrication drawing COPPER1.PHO - copper layer #1 (top side) COPPER2.PHO - copper layer #2 (inner ground plane) COPPER3.PHO - copper layer #3 (inner power plane) COPPER4.PHO - copper layer #4 (bottom side) TOPMASK.PHO - top side solder mask BOTTOMMASK.PHO - bottom side solder mask NCDRILL.DRL - drill data file NCDRILL.LST - drill list NCDRILL.REP - drill report
標簽： 2420 FABRICATION reference fabricati
上傳時間： 2015-05-12
上傳用戶：xc216
最新版的嵌入式bootloader源代碼，可以輕松的在一周之內(nèi)一直到各類MCU上，如MIPS，ARM7，ARM9，XScale，Power PC等平臺。
標簽： bootloader 嵌入式 源代碼
上傳時間： 2013-11-29
上傳用戶：siguazgb
he LPC932 can be used to create a Pulse Width Modulated PWM signal. That s an analog signal, with only 2 discrete levels, for example 0V and 5V and a constant period. The current value of this signal at a certain poiTnt of time is proportional to its Duty Cycle. That s the High Time during one period divided by the period. It can also be calculated as the average value during a particular period. That means after low pass filtering, (e.g. RC circuit) the signal becomes analog, with an actual value controlled by the microcontroller. The PWM functionality enables the LPC932 to control for example the speed of DC motors or the brightness of electric lighting.
標簽： signal Modulated analog create
上傳時間： 2015-05-14
上傳用戶：CHINA526
為了廣大“電子愛好者”網(wǎng)友需求，將PROTEL99SE軟件制作印刷電路版*.DDB文件 轉(zhuǎn)換成POWER PCB識別的*.PCB文件軟件提供給你們。
標簽： 電子愛好者
上傳時間： 2013-12-17
上傳用戶：thinode
非常好的資料，包括44B0原理圖和PCB，以及LCD調(diào)試程序，包括CPU,MEMORY,UART,USB,POWER模塊，適合學(xué)習(xí)之用。
標簽：
上傳時間： 2014-01-10
上傳用戶：zmy123
軟件工程實驗報告__信息管理系統(tǒng)需求分析與數(shù)據(jù)庫設(shè)計，使用工具：MS VISIO2003、Power Designer
標簽： 軟件工程 實驗報告 信息管理系統(tǒng) 分
上傳時間： 2013-12-12
上傳用戶：gdgzhym
Features • Compatible with MCS-51® Products • 8K Bytes of In-System Programmable (ISP) Flash Memory – Endurance: 1000 Write/Erase Cycles • 4.0V to 5.5V Operating Range • Fully Static Operation: 0 Hz to 33 MHz • Three-level Program Memory Lock • 256 x 8-bit Internal RAM • 32 Programmable I/O Lines • Three 16-bit Timer/Counters • Eight Interrupt Sources • Full Duplex UART Serial Channel • Low-power Idle and Power-down Modes • Interrupt Recovery from Power-down Mode • Watchdog Timer • Dual Data Pointer • Power-off Flag
標簽： 8226 Programmable Compatible In-System
上傳時間： 2015-06-27
上傳用戶：dianxin61
EasyD12動態(tài)連接庫是Microsoft Windows的接口標準，流行的軟件開發(fā)工具VC、VB、VF、Delphi、C++ Builder、Power Builder 等均可使用。用戶可以選用自己喜愛的工具輕松搞定USB開發(fā)。其中包含2個版本DLL，根據(jù)情況自己選擇。
標簽： Microsoft Windows EasyD 12
上傳時間： 2014-01-19
上傳用戶：hzy5825468
光學(xué)設(shè)計軟件zemax源碼： This DLL models an nular aspheric surface as described in: "Annular surfaces in annular field systems" By Jose M. Sasian Opt. eng. 36 (12) P 3401-3401 December 1997 This surface is essentially an odd aspheric surface with an offset in the aspheric terms. The sag is given by: Z = (c*r*r) / (1+(1-((1+k)*c*c*r*r))^ 1/2 ) + a*(r-q)^2 + b*(r-q)^3 + c*(r-q)^4 + ... Note the terms a, b, c, ... have units of length to the -1, -2, -3, ... power.
標簽： described aspheric surfaces Annular
上傳時間： 2014-01-08
上傳用戶：yyyyyyyyyy
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