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知识问答器。可以任意选取一套题目作答，服务返回答题统计结果。-Knowledge Q

LCD源程序，51是负的然后到LCD，然后控制脚的好地方再编译液晶显示器.asm暂停时，LCD会产生我们写的结果

ZLG7290B 是广州周立功单片机发展有限公司自行设计的数码管显示驱动及键盘扫描 管理芯片。能够直接驱动8 位共阴式数码管（或64 只独立的LED），同时还可以扫描管理 多达64 只按键。其中有8 只按键还可以作为功能键使用，就像电脑键盘上的Ctrl、Shift、 Alt 键一样。另外ZLG7290B 内部还设置有连击计数器，能够使某键按下后不松手而连续有 效。采用I2C 总线方式，与微控制器的接口仅需两根信号线。该芯片为工业级芯片，抗干扰 能力强，在工业测控中已有大量应用。-Canton weeks ZLG7290B is Ligong Singlechip Development Co., Ltd. to design the digital tube display driver and the keyboard scan management chip. Can directly drive a total of 8 vaginal digital tube (or 64 independent LED), at the same time management can also scan up to 64 keys. Which has 8 buttons can also be used as function keys, like the computer keyboard on the Ctrl, Shift, Alt keys like. Another internal ZLG7290B batter has also set up counters, can press a button and a row after不松手effective. Using I2C bus mode microcontroller interface with only two signal lines. The chip-on-chip for industry, anti-interference ability, in the industrial measurement and control has been a large number of applications.

c8051f系列HEX例程，几乎是全系列的-HEX Series c8051f routine, almost full range of

51单片机的波特率设置计算小工具。方便的计算值就可用波特率产生。-51 Baud Rate Setting small calculation tool. To facilitate the calculated values can be generated with baud rate.

带遥控的液晶显示程序，液晶是1602，遥控器是普通的电视机遥控器-with remote LCD display program, LCD is 1602, the remote control was an ordinary TV remote control

AVRandSED1520（ATMEGA32显示驱动和原理图）； -AVRandSED1520 (ATMEGA32 display driver and the schematic diagram)

data sheet of LMD18200T

本模拟I2C软件包包含了I2C操作的底层子程序，使用前要定义好SCL和SDA。在标准8051模式(12 Clock)下,对主频要求是不高于12MHz-The simulation package includes I2C bottom I2C operation subroutine, before the definition of a good use of SCL and SDA. 8051 in standard mode (12 Clock), the requirements for the frequency is higher than 12MHz

4442逻辑加密IC卡读写底层C51程序，-4442 encryption logic IC Card Reader bottom C51 procedures,