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Power

Power函数的主要作用是返回给定数字的乘幂。Power函数的语法为:Power(number,Power),其中参数number表示底数;参数Power表示指数。两个参数可以是任意实数,当参数Power的值为小数时,表示计算的是开方;当参数number取值小于0且参数Power为小数时,Power函数将返回#NUM!错误值。[1]
  • The CD ROM driver is used with Classpnp.sys to provide access to CD ROMs and DVD ROMs. It supports P

    The CD ROM driver is used with Classpnp.sys to provide access to CD ROMs and DVD ROMs. It supports Plug and Play, Power Management, and AutoRun (media change notification). It is 64-bit compliant.

    标签: ROMs Classpnp supports provide

    上传时间: 2014-01-19

    上传用户:jyycc

  • This is the library for all storage drivers. It simplifies writing a storage driver by implementing

    This is the library for all storage drivers. It simplifies writing a storage driver by implementing 90 percent of the code required to support Plug and Play, Power Management, et cetera. This library is used by disk.sys, cdrom.sys and the tape class drivers. No INF file is needed to install this library. The library is 64-bit compliant.

    标签: storage implementing simplifies drivers

    上传时间: 2014-01-01

    上传用户:txfyddz

  • 通过MP(代表其中一个P口)的高4位来控制

    通过MP(代表其中一个P口)的高4位来控制,AA`BB`-4,5,6,7脚。12细分,没行数组里面分4对,每对数第一个加到P口控制电流方向,第二个数控制通电时间。正转AA`-BB`-A`A-B`B,数组由1到12行的读取,反转B`B-A`A-BB`-AA`,数组由12到1行的读取。参数Power表示电机启动还是不启动,DIRECT参数表示方向,SPEED表示速度等级,每项通电时间用数组中的植/SPEED。本程序没考虑要走多少步的情况,调用一次就走一步。

    标签: 控制

    上传时间: 2015-12-07

    上传用户:hopy

  • This application report describes the use of Timer_A3 to decode RC5 and SIRC TV IR remote control si

    This application report describes the use of Timer_A3 to decode RC5 and SIRC TV IR remote control signals. The decoder described in this report is interrupt-driven and operates a background function using specific features the Timer_A3. Only a small portion of the MSP430 CPU?s nonreal-time resources is used. Specific hardware bit-latching capabilities of the Timer_A3 module are used for real-time decoding of the IR data signal, independent and asynchronous to the CPU. CPU activity and Power consumption are kept to an absolute minimum level. The Timer_A3 decoder implementation also allows other tasks to occur simultaneously if required. The solutions provided are written specifically for MSP430x11x(1) and MSP430x12x derivatives, but can be adapted to any other MSP430 incorporating Timer_A3. 電視遙控器設計基於MSP430

    标签: application describes Timer_A control

    上传时间: 2014-01-01

    上传用户:qq21508895

  • This submission includes the presentation and model files that were used in delivering a webinar on

    This submission includes the presentation and model files that were used in delivering a webinar on 12-15-05 that covered the topic of modeling Hybrid Electric Vehicles. Hybrid electric vehicles (HEVs) have proven they can substantially improve fuel economy and reduce emissions. Because HEVs combine an electric drive with the internal combustion engine (ICE) in the Powertrain, the vehicle?s kinetic energy can be captured during braking and transformed into electrical energy in the battery. The dual Power source also means that the ICE can be reduced in size and can operate at its most efficient speeds.

    标签: presentation submission delivering includes

    上传时间: 2015-12-24

    上传用户:zl5712176

  • We address the problem of blind carrier frequency-offset (CFO) estimation in quadrature amplitude mo

    We address the problem of blind carrier frequency-offset (CFO) estimation in quadrature amplitude modulation, phase-shift keying, and pulse amplitude modulation communications systems.We study the performance of a standard CFO estimate, which consists of first raising the received signal to the Mth Power, where M is an integer depending on the type and size of the symbol constellation, and then applying the nonlinear least squares (NLLS) estimation approach. At low signal-to noise ratio (SNR), the NLLS method fails to provide an accurate CFO estimate because of the presence of outliers. In this letter, we derive an approximate closed-form expression for the outlier probability. This enables us to predict the mean-square error (MSE) on CFO estimation for all SNR values. For a given SNR, the new results also give insight into the minimum number of samples required in the CFO estimation procedure, in order to ensure that the MSE on estimation is not significantly affected by the outliers.

    标签: frequency-offset estimation quadrature amplitude

    上传时间: 2014-01-22

    上传用户:牛布牛

  • The Original USB 2.0 specification released on April 27, 2000 Errata to the USB 2.0 specification

    The Original USB 2.0 specification released on April 27, 2000 Errata to the USB 2.0 specification as of December 7, 2000 Mini-B connector Engineering Change Notice to the USB 2.0 specification. Pull-up/pull-down Resistors Engineering Change Notice to the USB 2.0 specification. Errata to the USB 2.0 specification as of May 28, 2002 Interface Association Descriptor Engineering Change Notice to the USB 2.0 specification. Rounded Chamfer Engineering Change Notice to the USB 2.0 specification as of October 8, 2003 Unicode Engineering Change Notice to the USB 2.0 specification as of February 21, 2005 Inter-Chip USB Supplement Revision 1.0 as of March 13, 2006 Revision 1.3 of the USB On-The-Go Supplement as of December 5, 2006 Revision 1.01 of the Micro-USB Cables and Connectors Specification as of April 4, 2007 USB 2.0 Link Power Management Addendum Engineering Change Notice to the USB 2.0 specification as of July 16, 2007.

    标签: specification 2.0 USB Original

    上传时间: 2013-12-31

    上传用户:familiarsmile

  • Carrier-phase synchronization can be approached in a general manner by estimating the multiplicativ

    Carrier-phase synchronization can be approached in a general manner by estimating the multiplicative distortion (MD) to which a baseband received signal in an RF or coherent optical transmission system is subjected. This paper presents a unified modeling and estimation of the MD in finite-alphabet digital communication systems. A simple form of MD is the camer phase exp GO) which has to be estimated and compensated for in a coherent receiver. A more general case with fading must, however, allow for amplitude as well as phase variations of the MD. We assume a state-variable model for the MD and generally obtain a nonlinear estimation problem with additional randomly-varying system parameters such as received signal Power, frequency offset, and Doppler spread. An extended Kalman filter is then applied as a near-optimal solution to the adaptive MD and channel parameter estimation problem. Examples are given to show the use and some advantages of this scheme.

    标签: synchronization Carrier-phase multiplicativ approached

    上传时间: 2013-11-28

    上传用户:windwolf2000

  • In this paper, a new family of Cassinian wave-guides is proposed, simulating and calculation are fi

    In this paper, a new family of Cassinian wave-guides is proposed, simulating and calculation are finished with CST Microwave Studio that based on Finite Integral Technique (FIT), and some results are given. Electromagnetic field mode type of it is TE, electromagnetic field is stronger near neck region, and some resonance frequencies appear. The new Cassinian curve wave-guides will possess higher Power than ones of the rectangular and elliptic wave-guides because the height at the position where maximal electric field occurs is smaller.

    标签: calculation wave-guides simulating Cassinian

    上传时间: 2014-01-18

    上传用户:netwolf

  • ST7529液晶驱动 The ST7529 is a driver & controller LSI for 32 gray scale graphic dot-matrix liquid cryst

    ST7529液晶驱动 The ST7529 is a driver & controller LSI for 32 gray scale graphic dot-matrix liquid crystal display systems. It generates 255 Segment and 160 Common driver circuits. This chip is connected directly to a microprocessor, accepts Serial Peripheral Interface (SPI), 8-bit/16-bit parallel or IIC display data and stores in an on-chip display data RAM. It performs display data RAM read/write operation with no external operating clock to minimize Power consumption. In addition, because it contains Power supply circuits necessary to drive liquid crystal, it is possible to make a display system with the fewest components.

    标签: 7529 controller dot-matrix graphic

    上传时间: 2013-12-02

    上传用户:奇奇奔奔