Abstract: Many industrial/scientific/medical (ISM) band radio frequency (RF) products use crystal oscillators to generate areference for the phase-locked loop (PLL)-based local oscillator (LO). This tutorial provides a basic description of theISM-RF Crystal Calculator, which can be used to Calculate various impacts on crystal frequency accuracy and startupmargin for such an LO.
上传时间： 2013-11-15
上传用户：JasonC
Abstract: A resistive feedback network is often used to set the output voltage of a power supply. A mechanical potentiometer (pot)conveniently solves the problem of adjusting a power supply. For easier automatic calibration, a mechanical pot can be replaced witha digital pot. This application note presents a calibration solution that uses a digital pot, because digipots are smaller, do not movewith age or vibration, and can be recalibrated remotely. This proposed solution reduces the susceptibility of the system to thetolerance of the digital pot's end-to-end resistance, making the solution optimal fordesigners. This application note also explainssome of the equations required to Calculate the resistor chain values and to use a digital pot in this way. A spreadsheet withstandard reisistor values is available for easy calculations.
上传时间： 2013-10-31
上传用户：caiguoqing
The MAX9257/MAX9258 programmable serializer/deserializer (SerDes) devices transfer both video data and control signals over the same twisted-pair cable. However, control data can only be transmitted during the vertical blank time, which is indicated by the control-channel-enabled output (CCEN) signal. The electronic control unit (ECU) firmware designer needs to know how quickly to respond to the CCEN signal before it times out and how to Calculate this duration. This application note describes how to Calculate the duration of the CCEN for the MAX9257/MAX9258 SerDes chipset. The calculation is based on STO timeout, clock frequency, and UART bit timing. The CCEN duration is programmable and can be closed if not in use.
上传时间： 2014-01-24
上传用户：xingisme
为提高太阳能的利用率，以ATmega8单片机为控制核心，设计了一套光电跟踪与视日运动轨迹跟踪互补控制的双轴太阳跟踪器。该跟踪器在晴天时，利用光敏电阻采集光强判断太阳位置,控制步进电机实现光电跟踪；在阴天时，采集时钟器件PCF8583的时间信息,计算当前太阳位置来实现视日运动轨迹跟踪。实验表明：该太阳跟踪器能在不同天气状况下对太阳进行较准确地跟踪，能量接收效率提高了30%，达到充分利用太阳能的目的。 Abstract: To improve the utilization rate of solar energy，a kind of solar tracking controller which effectively combined the sun angle tracking and photo electric tracking based on ATmega8is designed.In the sunny days，the solar tracking con-troller determines the sun's position by using photosensitive resistances to collect light intensity and control stepper motors to achieve photo electric tracking，n cloudy days，it collects clock chip PCF8583time information to Calculate the current position of the sun and achieve the sun angle tracking.Experimental results show the solar tracking controller accurately tracks the sun in different weather conditions，improves received energy efficiency by30%and reaches the purpose of full use of solar energy.
上传时间： 2013-10-15
上传用户：urgdil
Abstract: Many industrial/scientific/medical (ISM) band radio frequency (RF) receivers use an external Sallen-Key datafilter and a data slicer to generate the baseband digital output. This tutorial describes the ISM-RF Baseband Calculator,which can be used to Calculate the filter capacitor values and the data slicer RC components, while providing a visualexample of the baseband signals.
上传时间： 2013-11-04
上传用户：jkhjkh1982
Autodesk AutoCAD 2008 简体中文版注册机 1. 安装 Autocad 2008 2. 启动 AutoCAD 2008，选择激活产品 填写序列号: 653-12354321 or 666-98989898 or 666-69696969 3. 复制你的申请号到注册机（只有CAD2008运行中，注册机才可以运行） 4. 点击Calculate 获得激活码 5.复制激活码到CAD 点击激活 完成
上传时间： 2013-10-29
上传用户：786334970
Autodesk AutoCAD 2008 简体中文版注册机 1. 安装 Autocad 2008 2. 启动 AutoCAD 2008，选择激活产品 填写序列号: 653-12354321 or 666-98989898 or 666-69696969 3. 复制你的申请号到注册机（只有CAD2008运行中，注册机才可以运行） 4. 点击Calculate 获得激活码 5.复制激活码到CAD 点击激活 完成
上传时间： 2013-12-22
上传用户：15501536189
This program will ask how many numbers you want to find the average of, then it will allow you to enter your numbers(yes they can even be decimals) then it will Calculate the mean, median, mode and range of what you enter.
上传时间： 2015-03-23
上传用户：skhlm
51串行令牌格式 a51编译 Read data from serial port and write into buffer DPTR pointed in XRAM if a data frame is received and Calculate the check sum if a information frame is received return control byte only
标签： data pointed buffer serial
上传时间： 2015-06-14
上传用户：极客
加密算法 Test Driver for Crypto++, a C++ Class Library of Cryptographic Primitives: - To generate an RSA key cryptest g - To encrypt and decrypt a string using RSA cryptest r - To Calculate MD5, SHS, and RIPEMD-160 message digests: cryptest m file - To encrypt and decrypt a string using DES-EDE in CBC mode: cryptest t - To encrypt or decrypt a file cryptest e|d input output - To share a file into shadows: cryptest s <pieces> <pieces-needed> file (make sure file has no extension, if you re running this under DOS) - To reconstruct a file from shadows: cryptest j output file1 file2 [....] - To gzip a file: cryptest z <compression-level> input output - To gunzip a file: cryptest u input output - To run validation tests: cryptest v - To run benchmarks: cryptest b [time for each benchmark in seconds]
标签： Cryptographic Primitives generate Library
上传时间： 2015-07-16
上传用户：wqxstar
