基于 avr 消防

source code for ultrasonic parking control using AT89c51.this is not my program.but i uploaded for the benefit of the people

PDA上的X86模拟器-PDA on the X86 simulator

Philips LCD PCF8833 driver-Philips LCD driver PCF8833

xc164cs测试程序 功能全面测试 是开发板的全部历程，其中有DAVE工程-xc164cs test program fully functional tests entire history of the development board, including DAVE Project

UDP实现嵌入式原程序-UDP realization inserts the type original procedure

一个ascii 码值计算原代码的例子-An ascii value of the original source code examples

弹片机的行列式（矩阵式）键盘，查询方式的，C语言的，其中SWICTH自己写.-Shrapnel machine determinant (matrix) keyboard, inquiry approach, C language, which swicth to write their own.

已经建立了 usbasp 程序员所述微控制器的程序，但那是另一个长的故事......它需要较高的 2 kb 的引导加载程序的内存。我有 6 kb 的内存来运行所有我 arduino 的项目。满意了我有测试的红外远程、 ds18b20、 hd74480、 模拟、 数字引脚，成功地内 6 kb 内存的 3310 液晶项目但猛地内存不足，当我想要运行的 sd 卡或其他较高的复杂项目。泰文 328 或 168 不是提供给我的国家的所以我想用泰文 16 或 32。但还有一个问题，他们已经不会编译或支持 (出来，fusebit 设置 pin) 给这种类型的微控制器。因此，似乎我是独自在自己的路上。我已经有砖 7 atmega8 尝试 usbasp 和 usbasploader，这是另一个悲惨的故事。我完全用砖其中 9 和成功恢复其中 2 由 avr 单片机 fusebit

这是一个关于PCI驱动开发的开发文档资料,里面详细介绍了开发过程-This is a study on the development of PCI-driven development documentation, which details the development process

Part IV In part II we discussed the conversion of binary numbers into decimal digits. It is sometimes useful to build circuits that use this method of representing decimal numbers, in which each decimal digit is represented using four bits. This scheme is known as the binary coded decimal (BCD) representation. As an example, the decimal value 59 is encoded in BCD form as 0101 1001. You are to design a circuit that adds two BCD digits. The inputs to the circuit are BCD numbers A and B, plus a carry-in, cin. The output should be a two-digit BCD sum S1S0. Note that the largest sum that needs to be handled by this circuit is S