8253的初始化程序举例: 例1:选择2号计数器,工作在3方式,计数初值为533H(2个字节),采用二进制计数。其初始化程序段为 MOV DX,307H ;命令口 MOV AL,10110110B ;2号计数器的初始化命 令字 OUT DX,AL ;写入命令寄存器 MOV DX,306H ;2号计数器数据口 MOV AX,533H ;计数初值 OUT DX,AL ;选送低字节到2号计数器 MOV AL,AH ;取高字节送AL OUT DX,AL ;后送高字节到2号计数器
上传时间: 2015-06-24
上传用户:zhangzhenyu
手机编程之接收发送短信,有对线程数据库的应用。主要是对at集的编程
上传时间: 2013-12-25
上传用户:zyt
This file came from Planet-Source-Code.com...the home millions of lines of source code You can view comments on this code/and or vote on it at: http://www.Planet-Source-Code.com/vb/scripts/ShowCode.asp?txtCodeId=58860&lngWId=1 The author may have retained certain copyrights to this code...please observe their request and the law by reviewing all copyright conditions at the above URL.
标签: Planet-Source-Code millions source lines
上传时间: 2013-12-26
上传用户:dancnc
The Linux kernel is one of the most interesting yet least understood open-source projects. It is also a basis for developing new kernel code. That is why Sams is excited to bring you the latest Linux kernel development information from a Novell insider in the second edition of Linux Kernel Development. This authoritative, practical guide will help you better understand the Linux kernel through updated coverage of all the major subsystems, new features associated with Linux 2.6 kernel and insider information on not-yet-released developments. You ll be able to take an in-depth look at Linux kernel from both a theoretical and an applied perspective as you cover a wide range of topics, including algorithms, system call interface, paging strategies and kernel synchronization. Get the top information right from the source in Linux Kernel Development.
标签: interesting open-source understood projects
上传时间: 2015-06-30
上传用户:zyt
This file were downloaded from the Programmers Heaven CD-Rom. More information about this CD-Rom can be found at the following WWW pages: http://www.algonet.se/~synchron http://www.infomagic.com synchron@algonet.se orders@infomagic.com
标签: CD-Rom Programmers information downloaded
上传时间: 2015-07-03
上传用户:Avoid98
诺亚短信控件 ~~~~~~~~~~~~ 本控件支持大部分的手机和GSM工业模块,通过计算机串口或USB转串口可以 实现手机或GSM工业模块短信收发,电话簿管理,拨打电话等工作. 一、主要特点: ========== 1.数据收发可靠,经过大量短信收发的检验 2.可以同时处理短信发送,和短信接收工作 3.多个操作可以同时进行,不会产生数据遗失 4.允许读取所有电话簿,读取所有短信,读取短信数量和容量 5.允许获取模块信息,可以读取模块厂商,设备ID,IMEI,IMSI及所属网络 6.允许用户设定短信自动接收 7.允许用户设定读取短信后是否删除 8.短信发送状态指示 9.BenQ M22模块及其AT指令兼容模块适用 10.数据捕获功能,方便调试模块及AT命令 11.每小时的平均发送速度约600条左右
上传时间: 2014-08-19
上传用户:dengzb84
The J2000 codec was written in an effort to produce the cleanest and simplest implementation possible of the JPEG-2000 standard. We have put a particular emphasis on good architecture design and code simplicity, while at the same time providing an implementation as complete and efficient as possible. The source code for the codec is freely available for anyone to study or even for use in commercial programs. We hope that our open development process and our focus on clean, straightforward code will help make the J2000 codec become a reference implementation of the JPEG-2000 standard
标签: implementation cleanest simplest produce
上传时间: 2015-07-03
上传用户:dengzb84
two path fading(qpsk) 这个是我写的关于qpsk的two path fading,站长帮帮忙,我现在很需要一篇<信道估计算法>(基于瑞利衰落信道的LS算法的Matlab程序),后天就要交了,救人一命胜造7级浮屠啊!
上传时间: 2015-07-05
上传用户:sunjet
这个是我自己写的关于qpsk的MIMO信道的vblast的vblast算法,站长帮帮忙,我现在很需要一篇<信道估计算法>(基于瑞利衰落信道的LS算法的Matlab程序),后天就要交了,救人一命胜造7级浮屠啊!
上传时间: 2015-07-05
上传用户:凌云御清风
two path fading(qpsk) 这个是我写的关于qpsk的MIMO信道mmse的计算方法,站长帮帮忙,我现在很需要一篇<信道估计算法>(基于瑞利衰落信道的LS算法的Matlab程序),后天就要交了,救人一命胜造7级浮屠啊!
上传时间: 2013-12-18
上传用户:zhaoq123