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
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：
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。
上传时间： 2022-06-17
上传用户：
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
The PCA9549 provides eight bits of high speed TTL-compatible bus switching controlledby the I2C-bus. The low ON-state resistance of the switch allows connections to be madewith minimal propagation delay. Any individual A to B channel or combination of channelscan be selected via the I2C-bus, determined by the contents of the programmable Controlregister. When the I2C-bus bit is HIGH (logic 1), the switch is on and data can flow fromPort A to Port B, or vice versa. When the I2C-bus bit is LOW (logic 0), the switch is open,creating a high-impedance state between the two ports, which stops the data flow.An active LOW reset input (RESET) allows the PCA9549 to recover from a situationwhere the I2C-bus is stuck in a LOW state. Pulling the RESET pin LOW resets the I2C-busstate machine and causes all the bits to be open, as does the internal power-on resetfunction.
上传时间： 2014-11-22
上传用户：xcy122677
ATmega8 taillight circuitAn assembly language program that generates 5 different static patterns with switching from pattern-to-pattern controlled by the depression of one push-button switch (S2).
标签： taillight circuitAn generates different
上传时间： 2014-01-12
上传用户：wanghui2438
算法ebook(10部算法经典著作的合集) 算法ebook> 10部算法经典著作的合集 chm格式 (1)Fundamentals of Data Structures by Ellis Horowitz and Sartaj Sahni (2)Data Structures, Algorithms and Program Style Using C by James F. Korsh and Leonard J. Garrett (3)Data Structures and Algorithm Analysis in C by Mark Allen Weiss (4)Data Structures: From Arrays to Priority Queues by Wayne Amsbury (5)Information Retrieval: Data Structures & Algorithms edited by William B. Frakes and Ricardo Baeza-Yates (6)Introduction to Algorithms by Thomas H. Cormen, Charles E. Leiserson, and Ronald L. Rivest (7)Practical Data Structures in C++ by Bryan Flamig (8)Reliable Data Structures in C by Thomas Plum (9)Data Structures and Algorithms Alfred V. Aho, Bell Laboratories, Murray Hill, New Jersey John E. Hopcroft, Cornell University, Ithaca, New York Jeffrey D. Ullman, Stanford University, Stanford, California (10)DDJ Algorithms and Data Structures Articles
标签： ebook Fundamentals Structures Ellis
上传时间： 2015-04-04
上传用户：tfyt
1) Write a function reverse(A) which takes a matrix A of arbitrary dimensions as input and returns a matrix B consisting of the columns of A in reverse order. Thus for example, if A = 1 2 3 then B = 3 2 1 4 5 6 6 5 4 7 8 9 9 8 7 Write a main program to call reverse(A) for the matrix A = magic(5). Print to the screen both A and reverse(A). 2) Write a program which accepts an input k from the keyboard, and which prints out the smallest fibonacci number that is at least as large as k. The program should also print out its position in the fibonacci sequence. Here is a sample of input and output: Enter k>0: 100 144 is the smallest fibonacci number greater than or equal to 100. It is the 12th fibonacci number.
标签： dimensions arbitrary function reverse
上传时间： 2016-04-16
上传用户：waitingfy
T-kernel 的extension源代码，是日本最著名的T-kernel所独有的，适合开发T-kernel的朋友们使用！ TK/SE is the program that extends T-Kernel and provides the functions such as a file system and a process management. The TK/SE archive to be provided is comprised of the main portion and the 2 extended file system portions, and TK/SE object is built by adding these to T-Kernel source. a) tkernel_se_1.00.00.tar.gz Main source of T-Kernel/SE b) extfs_fatfs_1.00.00.tar.gz Difference source of T-Kernel/SE extended file system (FAT) c) extfs_cdrom_1.00.00.tar.gz Difference source of T-Kernel/SE extended file system (CD-ROM)
上传时间： 2014-01-20
上传用户：czl10052678
Thinking in Java, 3rd ed. Revision 4.0 Preface Introduction 1: Introduction to Objects 2: Everything is an Object 3: Controlling Program Flow 4: Initialization & Cleanup 5: Hiding the Implementation 6: Reusing Classes 7: Polymorphism 8: Interfaces & Inner Classes 9: Error Handling with Exceptions 10: Detecting Types 11: Collections of Objects 12: The Java I/O System 13: Concurrency 14: Creating Windows & Applets 15: Discovering Problems 16: Analysis and Design A: Passing & Returning Objects B: Java Programming Guidelines C: Supplements D: Resources Index
标签： Introduction Thinking Revision Preface
上传时间： 2014-07-13
上传用户：netwolf
