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transform-<b>DOMAIN</b>

  • 工业仪表显示,收音机LCD驱动,音箱/音响LCD段码屏驱动:VK2C21A/B/C/D(裸片可订货)

    产品型号:VK2C21A/B/C/D 产品品牌:VINKA/永嘉微/永嘉微电 封装形式:SOP28/24/20/16 裸片:DICE(邦定COB)/COG(邦定玻璃用) 产品年份:新年份 联 系 人:许硕  Q Q:191 888 5898 联系手机:18898582398(信) 原厂直销,工程服务,技术支持,价格最具优势!QT459 VK2C21A/B/C/D概述: VK2C21是一个点阵式存储映射的LCD驱动器,可支持最大80点(20SEGx4COM)或者最大128点(16SEGx8COM)的LCD屏。单片机可通过I2C接口配置显示参数和读写显示数据,也可通过指令进入省电模式。其高抗干扰,低功耗的特性适用于水电气表以及工控仪表类产品。 特点: ★  工作电压 2.4-5.5V ★  内置32 kHz RC振荡器 ★  偏置电压(BIAS)可配置为1/3、1/4 ★  COM周期(DUTY)可配置为1/4、1/8 ★  内置显示RAM为20x4位、16x8位 ★  帧频可配置为80Hz、160Hz ★  省电模式(通过关显示和关振荡器进入)

    标签: VK2C21 VK2C21A VK2C21B VK2C21C VK2C21D LCD抗干扰段码屏驱动 段码屏驱动抗干扰

    上传时间: 2022-06-09

    上传用户:2937735731

  • NTC计算公式 温度公式B值计算法

    描述了NTC使用B值计算出实际温度与输出的电压之间的关系。

    标签: ntc计算

    上传时间: 2022-06-15

    上传用户:

  • Quectel Wireless Solutions BC20-TE-B 原理图 V1.2

    BC20-TE-B NB-Iot 评估板评估板原厂原理图V1.2。完整对应实物装置。

    标签: BC20 NB-Iot Quectel

    上传时间: 2022-06-17

    上传用户:

  • ASR M08-B资料

    ASR M08-B设置软件 V3.2  arduino 2560+ASRM08-B测试程序  arduino UNO+ASRM08-B测试程序语音控制台灯电路图及C51源码(不带校验码) 继电器模块设置。   ASR M08-B是一款语音识别模块。首先对模块添加一些关键字,对着该模块说出关键字,串口会返回三位的数,如果是返回特定的三位数字,还会引起ASR M08-B的相关引脚电平的变化。【测试】①打开“ASR M08-B设置软件 V3.2.exe”。②选择“串口号”、“打开串口”、点选“十六进制显示”。③将USB转串口模块连接到语音识别模块上。接线方法如下:语音模块TXD --> USB模块RXD语音模块RXD --> USB模块TXD语音模块GND --> USB模块GND语音模块3V3 --> USB模块3V3(此端为3.3V电源供电端。)④将模块的开关拨到“A”端,最好再按一次上面的大按钮(按一次即可,为了确保模块工作在正确的模式)。⑤对着模块说“开灯”、“关灯”模块会返回“0B”、“0A”,表示正常(注意:0B对应返回值010,0B对应返回值010,返回是16进制显示的嘛,设置的时候是10进制设置的)。

    标签: ASR M08-B

    上传时间: 2022-07-06

    上传用户:aben

  • This program produces a Frequency Domain display from the Time Domain * data input using the Fast

    This program produces a Frequency Domain display from the Time Domain * data input using the Fast Fourier Transform.

    标签: Domain Frequency the produces

    上传时间: 2013-12-11

    上传用户:mpquest

  • Fast Fourier Transform power point The rectangular window introduces broadening of any frequency co

    Fast Fourier Transform power point The rectangular window introduces broadening of any frequency components [`smearing鈥? and sidelobesthat may overlap with other frequency components [`leakage鈥?. 鈥he effect improves as Nincreases 鈥owever, the rectangle window has poor properties and better choices of wncan lead to better spectral properties [less leakage, in particular] 鈥搃.e. instead of just truncating the summation, we can pre-multiply by a suitable window function wnthat has better frequency domain properties. 鈥ore on window design in the filter design section of the course

    标签: rectangular introduces broadening Transform

    上传时间: 2017-03-25

    上传用户:change0329

  • The frequency domain plays an important role in image processing to smooth, enhance, and detect edg

    The frequency domain plays an important role in image processing to smooth, enhance, and detect edges of images. Although image data typically does not include imaginary values, the fast Fourier transform (FFT) has been used for obtaining spectra. In this paper, the fast Hartley transform (FHT) is used to transform two-dimensional image data. Because the Hartley transform is real valued, it does not require complex operations. Both spectra and autocorrelations of two-dimensional ultrasound images of normal and abnormal livers were computed.

    标签: processing frequency important enhance

    上传时间: 2014-01-08

    上传用户:1051290259

  • An important book that cover wavelet domain. It help a lot in understanding wavelets and their appli

    An important book that cover wavelet domain. It help a lot in understanding wavelets and their applications. Beside explanations of the transform and application of this, there are also presents the reasons why wavelets are better than Fourier transform.

    标签: understanding important wavelets wavelet

    上传时间: 2017-06-14

    上传用户:lanhuaying

  • 3GPP协议

    3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Further advancements for E-UTRA; LTE-Advanced feasibility studies in RAN WG4 (Release 9)

    标签: 3GPP 协议

    上传时间: 2018-04-28

    上传用户:doforfuture

  • 求小数的某一位

    描述 分数a/b化为小数后,小数点后第n位的数字是多少? 其中0 < a < b < 100,1≤n≤10000。 格式 输入格式 三个正整数a,b,n,相邻两个数之间用单个空格隔开。 输出格式 一个数字

    标签: c语言

    上传时间: 2020-05-03

    上传用户:h149