This is the Sunplus 61 board schematic and PCB layout, hope that I can help ever...

对单片机初学者非常实用的一些小程序，这是第一部分-right MCU beginners very useful to a number of small, this is the first part

LED的显示功能，以及步进电机的驱动程序，打开程序后见程序中的I/O的备注就可以，只作为参考-LED display function, as well as stepper motor drivers, see the procedure to open procedure in the I/O

本程序为RF收发程序，采用外部中断判断脉冲长度，通过遥控接收程序。-This procedure for the RF transceiver procedures, using external interrupt pulse to determine the length of the procedure by remote control receiver.

C51很好的IO模拟串口程序，也称软件UART。只需用一个定时器，实现中断接收。程序编写得很规范，有很多个晶振频率和串口频率可选。是一个比较好的软件串口程序。-C51 a good simulation of serial IO program, also known as the software UART. Just use a timer to achieve interrupt reception. Programming very standardized, there are many a crystal oscillator frequency and the frequency of an optional serial port. Is a relatively good software serial programs.

设计一个允许n个进程并发运行的进程管理模拟系统。该系统包括有简单的进程控制、同步与通讯机构，其进程调度算法可任意选择。每个进程用一个PCB表示，其内容根据具体情况设置。各进程之间有一定的同步关系（可选）。系统在运行过程中应能显示或打印各进程的状态及有关参数的变化情况，以便观察诸进程的运行过程及系统的管理过程。-N the design of a permit to run a process complicated by the process management simulation system. The system has a simple process control, synchronization and communication agencies, the process scheduling algorithm can be arbitrary choice. Each process of a PCB said that its content in accordance with the specific circumstances of settings. The process has a certain degree of synchronization between the relationship between the (optional). System in the running process should be able to display or print the status of the process and the relevant parameters in order to observe the operation of various process and systems management processes.

ad0804程序，可实现ad转换，显示，-ad0804 procedures can be realized ad conversion, display,

modbus的CRC源程序,单片机89S52,汇编语言代码-Modbus CRC source, the microcontroller 89S52, assembly language code

GSM通讯的C语言源程序代码，能够实际应用，需用户自行修改-GSM communications C language source code, the practical application can be user modified

ht47r20遥控程序，红外线载波输出频率这系统时钟的12分频，当系统频率为480KHZ，载波频率为40KHZ-ht47r20 remote control procedures, infrared output carrier frequency system clock frequency of 12 minutes, when the system frequency for 480KHZ, carrier frequency 40KHZ

单片机C51语言的Mini X 嵌入式操作系统-C51 microcontroller Mini embedded OS X