SIM900A拨打电话发送短信TPC/IP通信

出租车自动计价器设计 要求： 计一个出租车计价器。 该计价器的计费系统：行程 3公里内，且等待累计时间2分钟内，起步费为10元；3公里外以每公里1.6元计费，等待累计时间2分钟外以每分钟以1.5元计费。 并能显示行驶公里数、等待累计时间、总费用。 -Taxi automatic meter design requirements: 1 meter taxi meter. The meter" s billing system: stroke within 3 km, and the total waiting time of 2 minutes, the starting fee is 10 yuan 3 kilometers away, charging 1.6 yuan per kilometer, waiting outside the aggregate time of 2 minutes to 1.5 yuan per minute billing. And can show the number of road miles, waiting for the accumulated time, the total cost.

EM4094 datasheet(all)

SDIO stack linux source code

USB接口芯片CH375HM-USB interface chip CH375HM

应用背景本例程序经过一个月的验证和调试，先已经很稳定，能够实现无霍尔有霍尔模式运转，和30度延时换相，脉宽调速等，并且里面还带详细的原理图和学习资料，很适合初学者学习使用。关键技术能够实现无霍尔有霍尔模式运转和30度延时换相脉宽调速，运行很稳定，可用于家电类的电机控制等等。

PHILIPS LPC2000 FLASH 烧写程序。目前最高版本，支持LPC内部带FLASH的芯片。-burning procedures. The current version of the highest support with internal LPC Flash chips.

非常经典的网络协议栈，这是目前最稳定版本，非常好用，我已经在我的开发板上移植成功，可以和广大开发都联系-very classic network protocol stack, which is the most stable version, very handy, I have in my development board transplantation, and the majority of development are linked

atmel的at91sam9260芯片的SPI读写程序，外设芯片为at45db321(dataflash)，通过调试，已用于实际应用-atmel chip SPI read and write the at91sam9260 procedures, peripheral chip at45db321 (dataflash), through commissioning, has been used in the practical application of

本人用STC12LE5202AD做过的太阳能草坪灯LED充放电控制器，具有浮充，过充，过放，光控+时控等功能， 实际应用良好，希望大家多多指导。-I am done with STC12LE5202AD solar lawn lamp LED charge and discharge controller, with a float, over charge, over discharge, light control+ time control and other functions, the practical application of good, I hope you lot of guidance.

(ARDUINO) 1602年键盘屏蔽分机板，您可使用本文档在 arduino R3 板上进行开发。