The GNU MP Bignum Library，非常好用的大数运算库，GMP is a free library for arbitrary precision arithmetic, operating on signed integers, rational numbers, and floating point numbers.
上传时间： 2014-01-08
上传用户：a673761058
QT3.3.4在远峰2410上移植 HOST 环境（虚拟机VM6.0）： 系统：redhat 9 完全安装 交叉工具arm 2.95.3 TARGET环境 arm 2410 240*320屏外加触摸屏 cramfs文件系统 软件： cross-2.95.3.tar.bz2 qt-embedded-free-3.3.4.tar.bz2 qt-x11-free-3.3.4.tar.bz2 tmake-1.11.tar.gz 经测试，在3.3.2的交叉编译工具也通过
上传时间： 2014-12-22
上传用户：上善若水
不知为何，在rh9下编译有警告，但是可以正常编译出结果 HOST 环境（虚拟机VM6.0）： 系统：redhat 9 完全安装 交叉工具arm 2.95.3 TARGET环境 arm 2410 240*320屏外加触摸屏 cramfs文件系统 软件： cross-2.95.3.tar.bz2 //交叉编译器 qtopia-free-src-2.2.0.tar.gz //qtopia e2fsprogs-1.35.tar.gz // jpegsrc.v6b.tar.gz // libpng-1.2.14.tar.bz2 tslib-1.3.tar.bz2 zlib-1.2.3.tar.bz2
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上传时间： 2016-10-23
上传用户：as275944189
The MAX481E, MAX483E, MAX485E, MAX487E–MAX491E, and MAX1487E are low-power transceivers for RS-485 and RS-422 communications in harsh environments. Each driver output and receiver input is protected against ±15kV electrostatic discharge (ESD) shocks, without latchup. These parts contain one driver and one receiver. The MAX483E, MAX487E, MAX488E, and MAX489E feature reduced slewrate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, thus allowing error-free data transmission up to 250kbps. The driver slew rates of the MAX481E, MAX485E, MAX490E, MAX491E, and MAX1487E are not limited, allowing them to transmit up to 2.5Mbps.
标签： MAX transceivers 485 low-power
上传时间： 2013-12-22
上传用户：小宝爱考拉
microchip公司提供的无线ziebee协议的演示程序，支持802.15.4，是free并且非常不错的协议程序。安装后即可看到源代码的C语言文件
上传时间： 2016-10-29
上传用户：邶刖
keil开发环境，small RTOS操作系统移植到５１单片机上，源码完整，具有很好学习及参考价值．
上传时间： 2016-10-31
上传用户：miaochun888
pSOSystem系统调用的例程，对学RTOS有帮助！
上传时间： 2016-11-06
上传用户：zhuyibin
本文主要讨论了如何在嵌入式实时操作系统μC/OSII下移植实现LwIP这套TCP/IP协议栈，使μC/OS II成为支持网络的RTOS。
上传时间： 2016-11-11
上传用户：duoshen1989
C 开发的有限元软件，界面还可以，不错，可以试试。 FElt is a free system for introductory level finite element analysis. It is primarily intended as a teaching tool for introductory type courses in finite elements - probably in the mechanical/structural/civil fields. In a command line environment, FElt uses an intuitive, straightforward input syntax to describe problems. It also includes a graphical user interface for workstations that allows the user to set-up, solve and post-process the problem in a single CAD-like environment.
上传时间： 2014-03-09
上传用户：zycidjl
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1 or any later version published by the Free Software Foundation with no Invariant Sections, with no Front- Cover Texts, and with no Back-Cover Texts. A copy of the license is included in the section entitled “GNU Free Documentation License”.
标签： Permission distribute the document
上传时间： 2016-11-30
上传用户：lxm
