用51单片机实现简单的音乐播放生日快乐歌。

针对51单片机的中断触发按键的程序，利用P3.2口接行列按键。-For 51 single-chip key interrupt to trigger the process, I then use the ranks of P3.2 button.

CCS编译器下PIC16F887使用示例-CCS compiler to use the sample under the PIC16F887

嵌入式系统已经广泛应用于各个科技领域和日常生活的每个角落，由于其本身的特性，使得我们很难发现它的存在。甚至一些从事嵌入式系统开发的科技人员也只知单片机，不知道嵌入式系统。本节从嵌入式系统的定义开始，阐述嵌入式系统的含义、特点等，以使读者加深对嵌入式系统的理解。 -Embedded systems are widely used in various fields of science and technology and everyday life in every corner, due to its own characteristics, making it very difficult for us to discover its existence. Embedded systems and even some involved in the development of scientific and technical personnel are also only single-chip, embedded systems do not know. This section from the beginning of the definition of embedded systems, embedded systems on the meaning, characteristics and so on, in order to enable readers to deepen their understanding of embedded systems.

一个有关高速单片机c8051f040控制步进电机的实例，希望对大家有所帮助-a high-speed microcontroller c8051f040 the stepper motor control examples, and I hope to help everyone

用一片单片机控制两个直流无刷电机运转,所以可有效的控制两个直流无刷电机的同步运转-Using a single-chip microcomputer to control two DC brushless motor functioning, and so we can effectively control two DC brushless motor synchronous operation

一个用ATMega88来实现一key键和一个Rotor的代码，可能过UART上传数据。-A key with ATMega88 to achieve a key and a Rotor code, may be to UART upload data.

TLC2543实时时钟芯片的读取程序，采用AVR单片机读取，并附上芯片的Datasheet。-TLC2543 real-time clock chip reader, using AVR read, accompanied Chip Datasheet.

会议计时器，以MCS51单片机为核心，实现会议演讲定时提醒功能，可以进行设定时间，倒计时，暂停，蜂鸣器提醒或灯光提醒等功能-Session timer to MCS51 single-chip microcomputer as the core, the realization of the meeting from time to time to remind the function of speech, you can set time, the countdown, suspension, or a buzzer to remind lighting functions to remind

AVR Programme is a SPI Example

at89c2051制作的超声波测距源程序 范围20cm-10m 精度1cm 如果需要电路图 请与我联系！-AT89C2051 source produced by the scope of ultrasonic rangefinder 20cm-10m accuracy 1cm circuit diagram if you need please contact me!