单片机为控制器件的，一个小巧的频率测试器。用c语言编写，用过验证和实际实践。...

John Catsoulis编写的Designing Embedded Hardware 。介绍了汇编语言，SPI,I2C,串口，usb,网口等硬件电路设计。模拟电路设计，AVR单片机原理-John Catsoulis prepared Designing Embedded Hardware. Introduction of assembly language, SPI, I2C, serial, usb, network hardware such as circuit design of the mouth. Analog circuit design, AVR Singlechip Principle

lcd1602与单片机连接实现显示程序，包含电路图-lcd1602 connection with the single-chip display program, including the circuit diagram

主要是一些基本的C61的程序，初学者有福了-Mainly C61 some basic procedures, beginners blessed

设计程序使一个LED发光管以0.6秒为周期闪烁，即发光管每0.3秒点亮或熄灭一次。 分析题目要求，主要涉及两方面的操作，即控制LED发光管的亮灭以及定时0.3秒。对于LED发光管，只用一个IO就可以控制了（例如使用IOA0）；而对于0.3秒定时，我们可以利用TimerA定时器轻易地实现。-The design process of a LED to LED blinking 0.6 seconds for the cycle, that is, every 0.3 seconds LED lit or extinguished once. Analysis of the subject requirements, mainly related to two aspects of the operation, that is, control LED LED light out as well as the timing of 0.3 seconds. The LED light-emitting tube, only one can control the IO (such as the use of IOA0) and for 0.3 seconds from time to time, we can use to easily achieve TimerA timer.

数字温度计进而考虑到用温度传感器，在单片机电路设计中，大多都是使用传感器，所以这是非常容易想到的，所以可以采用一只温度传感器DS18B20，此传感器，可以很容易直接读取被测温度值，进行转换，就可以满足设计要求。-Digital thermometer to take into account the use of temperature sensors, in single-chip circuit design, most of them are the use of sensors, so it is very easy to think of, so can use a temperature sensor DS18B20, this sensor can easily be directly read measured temperature values, the conversion, it can meet the design requirements.

zlg7289全面说明文挡，含汇编程序，使用说明，一份很不错的资料。-zlg7289 comprehensive description text block containing assembler, use, a very good information.

本文介绍了AT89C2051单片机的性能和特点，并在分析了超声波测距原理的基本系统框图。该设计系统经校正后，其测量精度可达0.1米-This paper introduces the AT89C2051 MCU performance and features, and the analysis of the basic principle of ultrasonic distance measurement system block diagram. The design system has been corrected, the measurement accuracy up to 0.1 meters

红外的发射和接收 单片机红外发射（原理与设计程序）-SCM infrared emission (theory and design program)

51单片机的端口应用，绝对能用的，直接是开发板的程序，来下吧-51 port MCU applications, the absolute can be used, direct the development of board process to the next bar

Frecuencymeter digital, clk frequency 10 MHZ, exhibition in 7 segments