Universal Serial Bus (USB) is a communications architecture that gives a personal computer (PC) the ability to interconnect a variety of devices using a simple four- wire cable. The USB is actually a two-wire serial communication link that runs at either 1.5 or 12 megabits per second (mbs). USB protocols can configure devices at startup or when they are plugged in at run time. These devices are broken into various device classes. Each device class defines the common behavior and protocols for devices that serve similar functions. Some examples of USB device classes are shown in the following table
标签： communications architecture Universal computer
上传时间： 2015-12-08
上传用户：stvnash
该软件提供了编辑、编译、运行、调试汇编语言程序的集成环境。目前支持MASM、TASM、MCS51三种编译器。第一次使用时，要现在选项菜单中选择您所使用的编译器类型及其目录所在。 bin目录里为本软件 files目录为汇编语言写的用于测试的程序 source目录为本软件的源代码 masm为MASM类型的编译器，其中：masm.exe为编译器，link.exe为连接器
上传时间： 2013-12-19
上传用户：wqxstar
The Original USB 2.0 specification released on April 27, 2000 Errata to the USB 2.0 specification as of December 7, 2000 Mini-B connector Engineering Change Notice to the USB 2.0 specification. Pull-up/pull-down Resistors Engineering Change Notice to the USB 2.0 specification. Errata to the USB 2.0 specification as of May 28, 2002 Interface Association Descriptor Engineering Change Notice to the USB 2.0 specification. Rounded Chamfer Engineering Change Notice to the USB 2.0 specification as of October 8, 2003 Unicode Engineering Change Notice to the USB 2.0 specification as of February 21, 2005 Inter-Chip USB Supplement Revision 1.0 as of March 13, 2006 Revision 1.3 of the USB On-The-Go Supplement as of December 5, 2006 Revision 1.01 of the Micro-USB Cables and Connectors Specification as of April 4, 2007 USB 2.0 Link Power Management Addendum Engineering Change Notice to the USB 2.0 specification as of July 16, 2007.
标签： specification 2.0 USB Original
上传时间： 2013-12-31
上传用户：familiarsmile
phpBook 是個建立於 PHP 及 MySQL 的留言板。 功能包括: -- 內建多種語法 (包括中文) -- IP 封鎖及禁止存取 -- 可自訂表情符號 -- URL-Code，包括 URL-Link s, URL-Picture s -- 自訂禁止字句 -- 防止惡意灌水式攻擊
标签： URL-Code phpBook MySQL PHP
上传时间： 2013-12-16
上传用户：dongbaobao
C语言进阶,包含以下的内容:C语言进阶－第一讲概述.pdf\C语言进阶－第二讲C语言复习.pdf\C语言进阶－第三讲编译汇编调试.pdf\C语言进阶－第四讲存储器与指针.pdf\C语言进阶－第五讲 数据结构与链表.pdf\C语言进阶－第六讲中断与驱动.pdf\C语言进阶－第七讲编码风格.pdf\C语言进阶－第八讲编写安全无错的代码.pdf\C语言进阶-lmalloc 第四讲代码.rar\C语言进阶－ASIX Win link list 第五讲代码.rar
上传时间： 2016-01-16
上传用户：pinksun9
This m-file simulates MPSK (BPSK,QPSK,8PSK)with theoretical and simulated results using Gray coding. Numerical examples of a satellite link design are shown using QPSK and/or 8PSK when the bit rate(Rb)is greater than the channel bandwidth Wc (Band-limited channel).
标签： theoretical simulates simulated results
上传时间： 2016-01-19
上传用户：pompey
Atmel AT91SAM7SE256的一些基本驱动代码， 包括Link Files, 中断源配置， SDRAM, USART, Timer等外设的驱动代码。可用于AT91SAM7SE系列处理器。
上传时间： 2013-12-20
上传用户：zjf3110
Introduction A shared library is a collection of functions that are available for use by one or more applications running on a system. On Windows operating systems, the library is compiled into a dynamic link library (.dll) file. At run-time, the library is loaded into memory and made accessible to all applications.
标签： Introduction collection available functions
上传时间： 2014-01-26
上传用户：2467478207
This Microsoft(R) Macro Assembler Reference lists all MASM instructions, directives, statements, and operators. It also serves as a quick reference to the Programmer’s WorkBench commands, and the commands for Microsoft utilities such as LINK and LIB. This book documents features of MASM version 6.1, and is part of a complete MASM documentation set.
标签： instructions directives statements Microsoft
上传时间： 2016-01-31
上传用户：asddsd
老外的超高效率压缩，High efficient Data Compression Library for use with Delphi. Support Rank, ZIP, BZIP and PPM compression algorithms. Compression ratio more than 1.5-2 times better than ZIP/RAR archiver. Compression speed up to 8 Mb/sec (on PIII-600).
标签： 高效率
上传时间： 2014-01-02
上传用户：athjac
