生日快乐音乐播放，汇编编写的扬声器，不是蜂鸣器

实现多个16*16LED屏的多个字符显示,显示方式有整行上移、帘入帘出、左移、右移-Achieve more than 16* 16LED screen shows a number of characters, displayed on the entire line has moved a curtain to curtain, the left, shifted to right

用单片机设计电子音乐门铃，除了各个子程序外还包括音符节拍码数据表。 -Designed with single-chip electronic music doorbell, in addition to various routines, but also including key data sheet music beat.

　C8051F330/1 MCU 有一个可编程内部高频振荡器、一个可编程内部低频振荡器和一个外部振荡器驱动电路。可以通过对 OSCICN 和 OSCICL 寄存器编程来使能/禁止内部高频振荡器和调节其输出频率（参看振荡器框图）；可以通过对 OSCLCN 寄存器编程来使能/禁止内部低频振荡器和调节其输出频率（参看图9.3）。系统时钟可以由外部振荡器电路或任何一个内部振荡器提供。表9.1给出了内部振荡器的电气特性。 -C8051F330/1 MCU has a programmable internal high-frequency oscillator, a programmable internal low frequency oscillator and an external oscillator drive circuit. Can register on OSCICN and OSCICL programming to enable/disable the internal high-frequency oscillator and adjust its output frequency (see diagram oscillator) OSCLCN can register through the programming to enable/disable the internal low frequency oscillator and adjust its output frequency (see Figure 9.3). System clock can be external oscillator circuit, or any provision of an internal oscillator. Table 9.1 gives the electrical characteristics of the internal oscillator.

51单片机实用子程序库，含有详尽的单片机资源调用子程序-51 single-chip utility subroutine library, which contains detailed subroutine calls single-chip resources

一个单片机对EEPROM AT24C02的读写程序。绝对好用。-A single-chip EEPROM AT24C02 on reading and writing process. Absolute ease of use.

通过单片机对HT9170进行控制，实现对音频信号的解码。-Through the single-chip microcomputer to control HT9170, realize decoding of audio signals.

一种采用CYPRESS的PSOC混合信号控制其系列的智能型充电器设计方案，可支持多种电池理性，根据电池充电曲线进行调整，开发IDE为CYPRESS的PSOC Designer，硬件为PSOC。-use of a PSOC mixed-signal control of its series of smart charger design that can support multiple battery rational, battery charging curve adjustment, IDE for the development of the PSOC Designer CYPRESS, hardware PSOC.

基于tw2835的的相关源代码程序，由一款51单片机来控制-Tw2835-based source code of the relevant procedures, by a single-chip microcomputer 51 to control the

51单片机的IIC总线先测试程序，C语言编写，很实用的！-51 MCU IIC bus test procedures, C language, it is useful!

单片机上网卡演示用HEX程序 -SCM 72.16 procedures used to demonstrate HEX SCM 72.16 procedures used to demonstrate HEX