80C51F020 SPI interface FOSS

usb 68013A芯片原理图和PCB图-usb 68013A chip and PCB schematic diagram

320240液晶的程序 430f149调试通过-320240 LCD 430f149 debug procedures through

独具一格，只用一个I/O资源就可测出常用的NEC格式IR 遥控码-a unique and use only one I/O resources can be used to measure the NEC format IR remote control code

本程序已经调试通过，使用I2C来从外部时钟芯片中读取并写入时间。文档包含i2c的驱动程序、时钟芯片的读与写、以及使用定时器中断产生脉冲来模拟gps对时。-This procedure has been debugging through the use of I2C chip from the external clock time to read and write. Document contains the i2c driver, the clock read and write chip, and the use of the timer interrupt to simulate the pulse generated when the gps on.

HT93LC46EEPROM 是Holtek 制造的1K 位系列的EEPROM（电子可擦除只读存储器），一般 它用于微控制器的固定数据的存储。在本文中，我们将以Holtek 公司8 位微控制器HT49 系列为例，介绍该芯片常用的操作功能代码。用户只需把代码加到程序中，并且在使用HT93LC46 之前将引脚CS/SK/DI/DO 连接即可。-HT93LC46EEPROM is a 1K-bit Holtek manufactured series of EEPROM (electronic erasable read-only memory), general micro-controller is used to store fixed data. In this article, we will Holtek" s 8-bit microcontroller HT49 series, for example, the introduction of the chip code commonly used operating functions. Users simply add the code the program, and before the use of HT93LC46 pin CS/SK/DI/DO connection is needed.

这是一个C51做的GPS终端 CPU：89S52 语言： Keil C51 主要是RS232通信-This a C51 done GPS terminal CPU : 89S52 Language : Keil C51 is RS232 communication

KEIL C51使用方法的介绍!非常详细,非常实用-KEIL C51 using the method of introduction! Very detailed, very useful

非常方便使用的ds1302程序。使用时，只需调用5个函数，即可完成1302的初始化，读写等-Ds1302 is very easy to use program. Use, simply call the 5 function, 1302 to complete the initialization, reading and writing, etc.

有遥控的温度计,用dS1302做时钟芯片，Ds18B20做温度芯片-There are remote thermometer with clock chip DS1302 do, Ds18B20 do temperature chip

CF8051F040开发板的SRAM_rw_test 程序-CF8051F040 development board