这是一个ht1620的资料，希望对你有用

在现代电子系统中，有为数众多的IC需要进行相互之间以及与外界的通信。为了提供硬件 的效率和简化电路的设计，PHILIPS开发了一种用于内部IC控制的简单的双向两线串行总线I2C-In modern electronic systems, there are a large number of IC need each other and communicate with the outside world. In order to provide the efficiency and simplify the hardware circuit design, PHILIPS developed an IC for internal control, a simple bi-directional two-wire serial bus I2C.

RS485通信程序，主机和从机都有了，现成的东西可以直接应用在你的开发中，PC程序用VB编写，485多机通讯是ASM的。-RS485 communication procedures, and from the host machine has a ready-made things can be directly used in your development, the PC using VB preparation procedures, more than 485 machine communication is the ASM.

开发环境中，使用ADS1.2开发版s3c2440数组使用键盘的方法

GPS接收机与PC机串行通信技术的开发与应用-GPS receiver and PC serial communication technology development and application

MCS―51单片机系统扩展 简单的并行接口由数据寄存器和少量的控制电路组成，暂存传送的数据。以锁存器、缓冲器为主要芯片，稍加控制都可以作为简单的并行接口.-MCS-51 single-chip microcomputer system to expand a simple parallel interface from the data register and a small number of control circuit components, temporary storage of data transmission. To latches, buffers as the main chip, a little control can be used as a simple parallel interface.

第六期SRTP-基于AT89C52的智能温控仪设计，可以当作课程设计，-The sixth issue of SRTP-based temperature controller AT89C52 intelligent design, can be used as curriculum design,

由SPCE061A控制的A/D转换器AD977的驱动程序-SPCE061A controlled by the A/D converter AD977 drivers

直流电机闭环控制C程序，包括方向、转速的控制和补偿算法等-C closed-loop DC motor control procedures, including direction, speed control and compensation algorithms, etc.

基于MSP430的I2C驱动程序，超强可移植性，方便重定义管脚-MSP430 Based on the I2C driver, super-portable, convenient re-definition of pin

AT89S51读写I2C总线实验之1602液晶显示 单片机对I2C总线的读写在实际的测量中有很大的作用，比如用AT24CXX系列存储实验数据等，现用AT89S51读写24C02，为了使得读出的数据能直观的表达，所以用1602液晶显示。 -AT89S51 read and write I2C bus of the 1602 experimental single-chip LCD to read and write on the I2C bus in the actual measurement has a significant role, such as the use of experimental data storage AT24CXX series, are currently using AT89S51 literacy 24C02, in order to make read out the expression of visual data, so use 1602 liquid crystal display.