RT-11

related topics
{system, computer, user}
{math, number, function}

RT-11 ('RT' for Real Time) was a small, single-user real-time operating system for the Digital Equipment Corporation PDP-11 family of 16-bit computers. RT-11 was first implemented in 1970 and was widely used for real-time systems, process control, and data acquisition across the full line of PDP-11 computers.

Contents

Features

Multitasking

RT-11 systems did not support preemptive multitasking, but most versions could run multiple simultaneous applications. All variants of the monitors provided a Background Job. The FB, XM and ZM monitors also provided a Foreground Job, as well as six System Jobs if selected via the SYSGEN System Generation program. These tasks had fixed priorities, with the Background Job lowest and the Foreground Job highest. It was possible to switch between jobs from the system console user interface, and SYSGEN could generate a monitor that provided a single Background Job (the SB, XB and ZB variants).

Full article ▸

related documents
Flip-flop (electronics)
Single-sideband modulation
Reduced instruction set computer
Process (computing)
Microsoft Windows
Microsoft Word
Simple Mail Transfer Protocol
Cray-1
Computer multitasking
BIOS
Peer-to-peer
Mandriva Linux
Universal asynchronous receiver/transmitter
Graphical user interface
Webcam
Set-top box
Digital Enhanced Cordless Telecommunications
Handoff
Direct Connect (file sharing)
Atmel AVR
Rectifier
Visual display unit
10 Gigabit Ethernet
Simple Network Management Protocol
Video
Amstrad CPC
Quality of service
Binary prefix
E-mail
Commodore 1541