usb to 232 学习作下在线的资料

文介绍一种用单片机普通I/O 口实现串行通信的方法，可在单片机的最小应用系统中实现与两个以上串行接口设备的多机通信。附有电路图和源代码。-text introduces a microcontroller I/O port serial communications, in the smallest single-chip microcomputer application system to achieve more with two serial interfaces of multi-machine communication. With circuit and the source code.

PXA270平台的键盘应用程序代码~~~~实现4*4键盘全功能-PXA270 platform application code keyboard ~ ~ ~ ~ to achieve 4* 4 full-function keyboard

C8051F04x单片机可变周期PWM脉宽调制。-C8051F04x Singlechip variable pulse width modulation PWM cycle.

I2C实用源代码。KEIL C51编译器编写。-I2C utility source code. KEIL C51 compiler to prepare.

s系列的51单片机的看门狗的c语言include库 可以用它轻松使用看门狗，内函驱动函数FeedDog（）-s series of 51 single-chip watchdog of the c language include the Treasury can use it easy to use watchdog, within the letter of drive function FeedDog ()

三个点温度进行监视；任意一个测温点大于设定温度报警提示-3-point temperature monitoring any point of a temperature greater than the set temperature alarm

51单片机及其C语言程序开发实例第9章节-51 SCM and its C language programming examples of the first 9 chapters

单片机应用技术选编3,有大量关于51、avr、pic等多种单片机实例-Selected 3 single-chip applications, a large number of on 51, avr, pic, etc. Examples of a variety of single-chip

控制LED灯的亮灭 控制LED灯的定时亮灭，单片机定时器的使用。-control of the LED light-controlled LEDs eliminate the regular-collapse of the use of SCM timer.

汉字字库的点阵提取程序,可以转成h格式与0x格式-Chinese characters of the dot-matrix extraction procedures, can be transformed to the format with the 0x format h