LCD7920 LCD characters operational procedures, already in use in the product,

通讯规则: 1:时钟7.3728 MHz/波特率9600/9个数据位/奇校验/1个停止位/硬件多机通讯功能/ 2:通讯连接采用硬件MAX485,双向单工 3:每个上行/下行的数据包的字节个数都是一样的(通讯数据量) 4:每个上行/下行的数据包都采用CRC8校验 5:数据接收采用中断+查询的方式 6:总是由主机向从机发送一个数据包,从机收到数据包后向主机回复一个数据包 7:不管是主机还是从机,如果收到的数据包有任何错误,都将丢弃该数据包,等效于没有接收 8:从机之间不能相互通讯,必须通过主机才能交换数据 9:无效地址是0,主机地址是1,从机地址是2.3.4......广播地址是255 -err

PHILIPS非接触射频卡RC500的开发技术资料,-PHILIPS non-contact RF Card RC500 development of information technology,

陵阳61单片机的计数测速程序， 按照双叶螺旋桨遮光计算，外部中断触发，SPI-led显示，定时器控制0.5秒更新，基于unSp IDE 2.0-61 Singlechip陵阳count velocimetry procedures, in accordance with the propeller futaba shading, the external interrupt trigger, SPI-led shows that 0.5 seconds timer control to update, based on the unSp IDE 2.0

飞利浦51LPC系列单片机对交流电机控制的电路原理图和源程序-51LPC Philips Microcontroller series of AC motor control circuit schematic and source

利用 AT89S51 单片机的 P0 端口的 P0.0 － P0.7 连接到一个共阴数码管的 a － h 的笔段上，数码管的公共端接地。在数码管上循环显示 0 － 9 数字，时间间隔 0.2 秒。 -use AT89S51 SCM P0 port of P0.0- P0.7 connected to a digital control Yam were a-h of the pen, digital tube connected to the public. The digital display tube cycle 0-9 figures, the time interval of 0.2 seconds.

介绍zlg7290的pdf，介绍得很详细，还有程序实例。-Introduction zlg7290 the pdf, very detailed introduction, there are instances.

AT89S51,AT89S52,AT89S53单片机的引脚，内部组成结构详细资料说明。英文资料。-AT89S51, AT89S52, AT89S53 MCU pin, the internal composition of the structure of detailed information. And English languages.

ds18b20 温度传感器 硬件设计和软件编程 供大家学习只用 能力有限 大家共同探讨-DS18B20 temperature sensor hardware design and software programming for your learning only limited ability to explore all

控制硬盘编程，实现读写功能，最底层的程序，c51编程。-control drives programming, achieving functional literacy, in the bottom procedures, c51 programming.

虽然很多人都知道FFT是什么，可以用来做什么，怎么去做，但是却不知道FFT之后的结果是什意思、如何决定要使用多少点来做FFT。-Although a lot of people know what is the FFT can be used to what to do, how to do, but do not know the results after the FFT is a very mean, how to decide how many points do want to use FFT.