While RTT is used for sophisticated entertainment purposes, such as streaming live video or audio and has applications that ultimately will make Internet use more lively and practical, this immediate-response technology is being used for a wide array of critical applications that require instant response times. For example, an automatic pilot must respond to data on changing flight conditions or the position of other aircraft immediately; nuclear power plants must have real-time information on what is happening at all times in all critical areas of the plant for safety; space flight computers must respond instantly to changing conditions in the atmosphere.

(2) Short for round-trip time, the time required for a network communication to travel from the source to the destination and back. RTT is used by some routing algorithms to aid in calculating optimal routes.

IEEE Technical Committee On Real Time Systems 
Home page of the IEEE Computer Society, Technical Committee on Real-Time Systems (IEEE-CS TC-RTS). Contains numerous resources for real time conferences, research, publications, products, and related Web sites.

CMX-RTX real time operating system
Product feature page for the CMS-RTX real time multitasking operating system for microprocessors and microcomputers.

On Time home page
The On Time site provides information on their real-time multitasking kernel for C and PASCAL, and the cross development system for 32-bit embedded systems.

Real Time Computing Laboratory
University of Michigan's Real Time Computing Laboratory home page. Here, you can find links to current research projects focusing on services for embedded real-time applications, interconnection networks, and a real-time multicomputer.

Real -Time Reality
Businesses are finding that pretty fast is now too slow.

Real-Time and RTOS Computing Resources
List of sites related to real time operating systems and programming.

Real-Time Encyclopedia
Provides information about real-time issues and embedded systems' design. The site includes Real-Time Magazine, which focuses on major topics in the real-time market and includes a section on products and companies. Additionally, this site host links to frequently asked questions, publications, information for system developers, and technology and market overviews.

RTMX operating system information page
Provides product information for the RTMX real time operating system, including features and supported CPU types. In addition, there are links to related real time computing Web sites.