采用TOP227单片开关电源芯片实现的充电器，内附电路图

介绍了在使用pdiusbd12进行usb开发时常遇到的问题以及回答。-Describes the development of the use of pdiusbd12 to usb problems and to answer questions from time to time.

我写的C8051F02x的一部分模块库，目前是OSC和UART的-I wrote part of C8051F02x module library is currently the OSC and the UART

温度传感器用单总线DS18B20，CPU为2051，三个按键，分别为UP，DOWN，SET温度调节上限为125度，下限为-55度。-Single-bus temperature sensor DS18B20, CPU for 2051, three buttons, namely, UP, DOWN, SET temperature regulation maximum of 125 degrees,-55 degrees for the lower limit.

12864 LCD万年历芯片 驱动芯片KS0108-12864 LCD Driver IC chip calendar KS0108

16*16点阵LED测试代码，为个人编写，主要用来测试点阵屏的好坏。-16*16 LED DOT display test

LED灯光变化控制，可以控制多个LED灯光的变化，实用可靠-LED lights change control, can control multiple LED lighting changes, practical and reliable

本软件是单片机通讯的主程序，通过串口传送数据。-This software is the main single-chip communications, through the serial transmission of data.

单片机系统上电后，P0 口和 P1 口都被清 0。然后，你规定一个由 6 个数字构成的序列（每个数字从 0～F 中选取），比如 E、8、9、0、7、F。然后每次当单片机检测到外部中断 0发起中断时间时，读取 P0 口和 P1 口上的状态值，当连续 6 次外部中断事件的对应的数字序列构成你所设定的序列后（举例来说，如果 P0.0 是 1，P0 和 P1 的其他管脚是 0，那么我们称为检测到一次数字 0），从串口打印输出一幅类似下图的 16×16 的ASCII码的圣诞树图片。-Single-chip microcomputer system after power, P0 and P1 mouth I have been ching 0. Then you set a six figure constituted by the sequence (each number from 0 ~ F in selected), for example, E, 8,9,0,7, F. And then each time a single-chip detects external interrupt 0 initiated interruption time, I read the P0 and P1 mouth on the state value, when a row 6 times the corresponding external interrupt events constitute digital sequence set your sequence (for example example, if P0.0 is 1, P0 and P1 of the other pin is 0, then we called a number of detected 0), a printout from the serial port under similar 16 × 16 map of the ASCII code of the Christmas tree图片.

一份51的编译程序,dos版本的. 英文名字MCS-51 Microcontroller Family Macro Assembler-a 51 compiler, dos version of the. English names MCS-51 Microcontroller Family Ma tis Assembler

双机通信过程中采用点对点通信的从机部分示例-Two-machine communication process used in point-to-point communications from the machine part of sample