FM25040的C51驱动程序，用于掉电保存数据。

基于单片机的交流伺服电机运动控制系统研究与开发-Based on single-chip AC servo motor motion control system research and development

新编万年历星期速算法C语言的实现-speed algorithm C implementation

TI公司最新51系列内核单片机MSC1210Y2的数据资料。-TI

SPI是一个环形总线结构，由ss（cs）、sck、sdi、sdo构成，其时序其实很简单，主要是在sck的控制下，两个双向移位寄存器进行数据交换。 假设下面的8位寄存器装的是待发送的数据10101010，上升沿发送、下降沿接收、高位先发送。 那么第一个上升沿来的时候 数据将会是sdo=1；寄存器=0101010x。下降沿到来的时候，sdi上的电平将所存到寄存器中去，那么这时寄存器=0101010sdi，这样在8个时钟脉冲以后，两个寄存器的内容互相交换一次。这样就完成里一个spi时序。 -SPI bus is a ring structure, by ss (cs), sck, sdi, sdo composition, its timing is actually very simple, mainly under the control of the sck and two bi-directional shift register for data exchange. Assuming the following 8-bit register is loaded to send the data to be 10,101,010, rising to send, receive falling edge, high first sent. Well, the first rising edge to the time data will be sdo = 1 register = 0101010x. Falling edge comes, sdi on the level will be stored to the register, then register at this time = 0101010sdi, so 8 clock pulse later, the contents of two registers to exchange time. This will be completed in a spi timing.

16位按键扫描程序,包含数字钟计时,闹钟报警,及定时应用-16 button scanning procedures, including digital clock timer, alarm clock, alarm, and timing applications

DS18B20做的温度计，winavr,1602显示-DS18B20 thermometer to do, winavr, 1602 show

相关富士通单片机实用资料2-Fujitsu MCU related practical information 2

66PP22A单片机dtmf解码程序,用于DTMF通讯 软解码方式-66PP22A SCM DTMF decoder procedures for communications DTMF decoder soft approach

此为按键部分的,读取按键值是否有按键判断部分函数-this as part of the button, reading keys value judgment whether some function keys

c8051f020单片机比较器CP1使用-C8051F020 single-chip comparator CP1 use