arm on the gprs communication module, the test can be oh, want to be useful to y...

下面是一个超声波测距的程序，硬件电路由于电脑格盘已丢失，下面的代码是从样机上复制的。 硬件电路包括液晶显示、超声波的发射、超声波的接受、滤波、单片机处理。 液晶显示采用LCD1602模块，下面的代码里有液晶的驱动，可以拷贝用于它处。 超声波发射电路包括压电换能器及其支持电路，发射约44KHz的超声波。 超声波的接收电路包含一块CD40106处理芯片。技术指标大约是测距范围在三米左右，测量精度约在厘米级别。大量用于倒车雷达的测距中。-The following is a range of ultrasound procedures, the hardware circuit as a result of the computer grid plate has been lost, the following code is copied from the prototype. Hardware circuit including liquid crystal display, ultrasonic transmitter, ultrasonic acceptance filtering, single-chip processing. LCD1602 LCD module used, the following code, there are LCD drivers, you can use it to copy. Firing circuit including the piezoelectric ultrasonic transducer and its support circuitry, fired about 44KHz ultrasound. Ultrasonic receiver circuit includes a processing chip CD40106. Technical indicators for a range of about 3 meters range around the measurement precision level of about cm. Reversing a large number for the location of the radar.

凑个崖边÷÷÷的-got 000 edge of a cliff to the

这是非常重要的理解通信控制信号时的稳定性不同的时钟系统，由于移动信号的新时钟域似乎是异步。如果信号不同步的新的时钟的第一存储元件时钟域可到亚稳态和最坏的情况是，解决时间不能预测。它可以遍历整个造成故障的功能，新的时钟域。为了防止这样的故障，建立时间和保持时间规范设计中应遵循。

关于STM32的编码器模式的代码实现！应经编译通过！两路编码器配置，可以实现自动间相，计数器的自动加减计数，还有OLED12864的配置！提供字库！

用51单片机控制，用三路红外对管检测黑线，使小车沿着黑线走。简单的原理，简单的程序，分享一下，适合初学者。。。。。。

单片机自发自收CAN通讯 c51_can_self-SCM spontaneously collected CAN communications c51_can_self

Keil C51 8051 demo kit

嵌入式的usb驱动程序，能顺利运行，对像学习嵌入式底层开发的朋友来说很有用，大家多交流-Embedded usb drivers, smooth running, like the bottom of the development of embedded learning is very useful friends, we more exchanges

测试各输入输出端口好坏，属于检测程序。 源于损害了部分端口。-Test the quality of the input and output ports are testing procedures. Port from some of the damage.

ZLG USB 套件-ZLG USB set of