用汇编程序编写的音乐控制 系统可以选择将近40首歌

用89c2051模拟产生dtmf信号，广泛用于防盗报警、电话数据传输等；节省发号及收号电路，成本低。-with 89c2051 simulation of DTMF signals, widely used in anti-theft alarm, telephone data transmission; Savings and resumption of the circuit, and low cost.

TLC1543 AD采样子程序，提供了PORT作为采样通道号的形参。-TLC1543 AD subroutine, as provided PORT sampling of the channel-shaped Senate.

基于microchip公司PIC16C745单片机的USB2.0源代码-Microchip-based company PIC16C745 MCU USB2.0 source code

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.

这是一个基于P89c51单片机的声音与显示C51程序--A P89C51-SCM-based C51 program for sound and display.

用于51系列的单片机开发时基本的7段数码管驱动源代码-51 Series Microcontroller for the development of basic paragraph 7, when the digital control-driven source code

（C语言）AT89S52做的时钟，带串口通讯，看门狗,注释详细，很适合初学者.-timer based on AT89S52

Brief Introduction to C51 Language

keil uVision3编译环境，51程序。-keil uVision3 build environment, 51 program.

用C实现信号发生装置：1、正弦波：频率、幅度可调。 2、三角波：频率、幅度可调。 3、方 波：频率、幅度、占空比可调。 4、按键：波形切换、频率调节、幅度调节、方波占空比调节。 5、显示：信号的频率、幅度，在方波时还要显示占空比。 -Implementation using C Signal: 1, sine wave: frequency, amplitude adjustable. 2, triangle-wave: frequency, amplitude adjustable. 3, square wave: the frequency, amplitude, duty cycle adjustable. 4, button: switch waveform, frequency regulation, rate regulation, adjust the duty cycle square wave. 5, show that: the signal frequency, amplitude, when they showed at the duty cycle square wave.