USB的驱动程序和应用层设计。应用层包括发光灯，逻辑电平，数模转换，模数转换，键盘测试，内存读写等等。-USB driver and application layer. Application layer, including light-emitting light, the logic level, DAC, ADC, keyboard test, memory read and write and so on.

ads7816数据采集，12位高精度模数转换驱动程序，-ads7816 data acquisition, high-precision 12-bit ADC driver

作为应用工程师我们经常遇到各种有关差分输入型高速模数转换器的驱动问题。-High speed difference adc design guidelines

模数转换及LCD显示驱动程序，基于80C51在KEIL开发环境下的程序。-Analog to digital conversion and LCD display drivers, based on the 80C51 program in KEIL development environment.