MMA7260

CVAVR ATMEL单片机开发的微波放大器程序。(cvavr atmel weibo.)

说明：  该抢答器供不多于4个参赛队或者个人的抢答比赛场合使用。每个参赛队的座位前 安装1只抢答按钮开关（用板上的S9、S10、S11、S12）和一个信号灯（D4、D5、D6、D7）。 主持人座位前装一只复原开关（板上S3）、1只蜂鸣器（板上BUZ1）和一个抢答器工作状态 指示灯（D10),每当主持人口头发出号令之后.哪个队先按下座位上的按钮开关,该座位的信 号灯就先被点亮,同时封锁其他按钮开关的活动.并且熄灭主持人座位上的状态指示灯和发出 三声类似于电话振铃的提示声,以声明此次抢答动作已经完成.在主持人确认后,按下复原按钮 ,状态指示灯重新点亮,并且同时发出"笛-笛-"声,为下一次抢答作好准备.(the Responder for up to four teams or individuals in the use of Responder competition occasions. Every team installed the seats before a Responder button switch (with the board S9, S10, S11, S12), and a signal (D4, D5, D6, D7). Moderator seats installed before a recovery switch (S3 board), a buzzer (BUZ1 board) and a Responder work status indicators (D10), whenever the moderator after oral orders issued. Which team first press of a button switches, the seat lights were lit on the first, while the blockade of the other button to switch activities. Moderator seats and extinguished the lights and the state issued three sound similar to the telephone tips ringing sound, in a statement this Responder action has been completed. the presenters confirmed? recovery button, status indicators re-lit,)

ntp客户端连接， 嵌入式C， 通过ntp服务器同步并更新本地时间，同步，计算，修改 ntp客户端连接， 嵌入式C， 通过ntp服务器同步并更新本地时间，同步，计算，修改(syncronize with time server. syncronize with time server.)

类似电脑键盘组合按键触发的功能。利用51单片机实现。有两个独立按键，当把两个独立按键都按下后，蜂鸣器发出“滴”的一声后就停。直到松开任一个按键后，才能重新进行下一次的组合按键触发。(Similar to the function of the keyboard combination of keys. The use of 51 single chip microcomputer. There are two independent buttons, when the two independent buttons are pressed, the buzzer issued a drop of sound after the stop. Until after the release of any key, the next combination of keys can be re trigger. )

说明：  抢答器 实现抢答可以自己编程实现很多人同时抢答 有用 可以试试(Quick answer implement Quick answer can be programmed to achieve a lot of people at the same time Quick answer useful can try)

说明：  用于在通讯协议中生成crc校验码，保证通讯数据的完整性(Used to generate crc check code in communication protocol to ensure the integrity of communication data)

说明：  步进电机控制及系统仿真，关于步进电机的控制算法等介绍。(Stepping motor control and system simulation.The control algorithm of stepper motor is introduced)

desinged based on avr processer for little smart car PWM(desinged based on avr processer for little smart car pwm)

EM78P468单片机的参考代码，C语言编写，还有详细的代码说明(EM78P468 Singlechip reference code, C language, as well as a detailed description of the code)

USefull memory chip to use with embedded micro controllers. The Chip interfaces on the SPI bus and provides a method of high capacity non-volatile memory storage