avr SCM 8,515 pairs of the test procedures ad7705

基于avr,D12的U盘设计,有完整的USB1.1的协议代码.-Based on the avr, D12 U-disk design, have complete agreement USB1.1 code.

急救车与交通灯）（1）南北与东西方向，每个方面由红黄绿三个灯控制（2）南北向：　红（30秒），黄（5秒），绿（25秒）　　　东西向： 红（35秒），黄（5秒），绿（25秒）　　　上述基本参数可以根据实际情况自行调整，灯的变化规律与实际路口规律相同，绿灯在最后5秒钟时，黄灯亮，然后红灯亮，不允许两个方面同时亮绿灯。（3）绿灯的时间显示在数码管上进行显示。（4）可以通过一个开关控制，当开关信号为0时，整个交通灯全灭提高要求：（1）设计一个紧急控制开关信号，当紧急开关信号为1时，两个方向的灯全为红灯。紧急开关撤消后，按照开关按下之前的状态继续运行（其参数要保存）。（2）设计一个夜间行车开关，当开关按下后，两个方向都只有黄灯闪烁，其它灯熄灭。（3）设计两个方向的亮时时间可调。-emergency vehicles and traffic lights) (1) North and South and east-west direction, each with three yellow-green from red lights control (2) to the north and south : red (30 seconds), yellow (5 seconds), Green (25 seconds) to things : red (35 seconds), yellow (5 seconds) Green (25 seconds) above basic parameters can be adjusted to the actual situation, the light changes with the actual law of the same intersection, the green light in the final five seconds, the yellow light is on, and then a red light, bright, not two fronts simultaneously bright green. (3) the green light at the time displayed on the digital display control. (4) can be controlled by a

鉴于MCS-51系统只提供“二级中断嵌套”，提出扩展51系统中断优先级的纯软件方法。其利用51系统内建的中断允许寄存器IE和中断优先级寄存器IP，通过屏蔽字机制来实现；以C51的形式，给出这种扩展方法的函数库实现，为该方法的使用赋予友好、简洁的用户接口。-Given MCS-51 systems only provide "two interrupt nesting," expanded 51 priority system interruption of pure software. The use of 51 built-in system allows interruption Register IE and priority interrupt register IP, through word shielding mechanisms to achieve; C51 in the form of this expansion is the way to achieve functions, methods for the use of empowerment friendly, simple user interface.

FM25040的C51驱动程序，用于掉电保存数据。-FM25040 the C51 driver, save the data for the brown-out.

通过控制步进电机的驱动板来控制步进电机实现阀门流量的恒定，可作为反馈系统的参考-By controlling the stepper motor driver board to control the stepper motor to achieve a constant flow valve can be used as a reference feedback system

TM160 OCCWUGWA1 and uc1698资料和驱动程序-TM160160OCCWUGWA1 and uc1698 Driver

PIC的资源,用PIC16F505做段码显示的C语言样例-Single and multiple 7-segment displays, multiplexing, and BCD counting on baseline PICs (using the PIC16F505)

c8051f330UART,c8051f330串口程序，大家可以试一下，-c8051f330 uart serial

这里给出74hc595的c51驱动程序。带锁存功能的串入并出芯片。-Here are 74hc595 the C51 driver. With latch function and a string into the chip.

凌阳实现4*4键盘的源码， 经过调试的，大家放心使用-Sunplus to achieve 4* 4 keyboard source, after debugging, we rest assured that the use of