MeshNetics - 802.15.4 / ZigBee Wireless RF Modules
MeshNetics is a creator of easy-to-integrate 802.15.4 / ZigBee wireless RF modules and ZigBee PRO-certified mesh networking software, used by OEMs and system integrators to add wireless connectivity to their products and solutions. MeshNetics RF modules feature industry-leading range performance, long battery life and ultra-small footprint. They are designed for use in 868/915 MHz and 2.4 GHz frequency bands. MeshNetics is a single source of ZigBee modules, development tools, networking software, technical support, and design services.

Telelogic Modeling Community: Whitepapers - UML, C/C++, OO Programming

overview    

POSIX @ Wikipedia
POSIX (IPA: [?p?s?ks]) or 'Portable Operating System Interface'[1] is the collective name of a family of related standards specified by the IEEE to define the application programming interface (API) for software compatible with variants of the Unix operating system. Originally, the name stood for IEEE Std 1003.1-1988, which as the name suggests, was released in 1988. The family of POSIX standards is formally designated as IEEE 1003 and the...
preview: http://en.wikipedia.org  

overview    

POSIX conformance is worth more than POSIX compliance
POSIX conformance is what real-time embedded developers are usually looking for. POSIX conformance means that the POSIX.1 standard is supported in its entirety. In the case of the LynxOS real-time operating system, the routines of the POSIX.1b and POSIX.1c subsets are also supported.
preview: http://www.lynuxworks.com  

overview    

POSIX® 1003.1 Frequently Asked Questions
Last Updated : November 25 2004: freq.ques,v 1.11 This is the Frequently Asked Questions file for the POSIX 1003.1 standard (IEEE Std 1003.1). Its maintainer is Andrew Josey (ajosey at The Open Group ). Suggestions and contributions are always welcome. This document can be found on the world wide web at http://www.opengroup.org/austin/papers/posix_faq.html. This article includes answers to the following.
preview: http://www.opengroup.org  

overview    

Real-time POSIX: An Overview
The POSIX standard defines a portable interface for UNIX-based operating systems. The goal of this increasingly important standard is source-level portability of applications. In this paper we discuss the real-time extensions to POSIX and how these extensions address the needs of applications with real-time requirements.
preview: http://www.ctr.unican.es  

overview    

The Use of POSIX in Real-time Systems,Assessing its Effectiveness and Performance
In this paper we will discuss the use of POSIX in real-time systems,including the POSIX real-time and thread extensions.We will first discuss what POSIX covers,and the differences that still exist between operating system implementations. We will then look at the performance of various POSIX mechanisms,using as case studies a general purpose OS (Solaris TM 8)and a real-time operating system (LynxOS).
preview: http://www.mitre.org   date: 1/1/1999