ARMer9开发系统的linux启动过程剖析的文档

The PCF7991AT is a fully integrated Advanced Basestation IC, ABIC, designed for car immobilizer systems providing read and write access to an identification transponder. The device is intended for use with the NXP transponder family (PCF79xx) as well as other transponder types operating at 125 kHz and employing ASK, Amplitude Shift Keying for write and AM/PM for the read operation. The receiver characteristics (amplifier gain,filter cutoff frequencies) can be optimized to system and transponder requirements. The PCF7991AT IC is designed for easy integration into immobilizer read/write and read-only systems featuring a high degree of integration and very low external component count. The device integrates a powerful antenna driver/modulator, a low-noise adaptive sampling time demodulator, programmable filters/amplifier and digitizer, required to design high-performance basestations. A three wire microcontroller interface is provided for programming the PCF7991AT as well as for th

单片机原理课程设计报告2.1本设计要求实现以下功能：（1）超声波测距，当感应到有人体接近距离达到40cm时，密码锁自动启动。                  （2）本设计为了防止密码被窃取要求在输入密码时在LCD屏幕上显示*号。              （3）设计开锁密码位六位密码的电子密码锁。                                         （4）能够LCD显示在密码正确时显示open，密码错误时显示ERROR，重置密码时显示initpassword。                                                                （5）实现输入密码错误超过限定的三次电子密码锁定。                               （6）4×4的矩阵键盘其中包括0-9的数字键和A-D的功能键。                          （7）本产品具备报警功能，当输入密码错误时蜂鸣器响并且LED灯亮。               &

液晶TS1620的程序--Display program for LCD TS1620.

资源描述野火STM32例程，配置STM32的USART收发数据，初学者必看实用例程

avrusb源码，好--Source code for avrusb.

blackfin 533 的tft代码 很基础-blackfin 533 code is the basis of tft

单片机二级项目，数字频显收音机源程序，谢谢~-MCU two projects, significant number of radio-frequency source, thank you ~

LINUX2.6.14.1下的CS8900A驱动源代码-LINUX2.6.14.1 under the CS8900A driver source code

基于 Atmel ATSAM4E 单片机的 Thebeast 板 这个 zip 文件已经是要测试 TheBeast Board(ATSAM4E Based) -源的代码实现，为 TCP/IP 协议： UDP，DHCP，NTP，音频 -面板设计文件、 KiCad 文件示意图 原始源文件： 免费、 开放源代码 http://www.limpkin.fr/index.php?post/ 2013/11/07/The-Beast%3A-who-needs-an-OS-anyway

嵌入式GUI开发平台，方便实用，短小精悍，分享之-Embedded GUI development platform to facilitate the practical, dapper, sharing of