Microcomputer Operating Systems
Some 70 OSs that run on microcomputers, PCs. User interfaces in earlier systems are command-line, character-oriented; later systems are mostly GUI-based. List, with brief descriptions, no links. From West Virginia University.
http://www.csee.wvu.edu/~jdm/classes/cs258/OScat/micros.html

The Acorn Microcomputer (1979)
Details of the Acorn Microcomputer, later called the Acorn System 1, including an introduction, documentation, pictures, schematics, and specifications.
http://www.cary.demon.co.uk/acorn/

Dayton Microcomputer Association
Dayton Microcomputer Association - home of Computerfest® - is one of the oldest, largest, and most active computer clubs in the USA.
http://www.dma.org/

Advanced Microcomputer Systems, Inc.
AMS Offers Tutors/Trainers for setting up labs for microprocessor,digital signal processor and electronic CAD courses. These come complete with student workbook.
http://amscourseware.com

P&E Microcomputer Systems, Inc.
Development tools for Motorola Freescale 68HC05, 68HC08, 68HCS08, 68HC12, 68HCS12, CPU12, CPU16, CPU32, ColdFire, MCORE, 340, 360, MPC5xx/8xx
http://www.pemicro.com

Animated Prosthetics, Inc.
Controls for prosthetic arms hands artificial arms hands myoelectric arms hands prosthesis amputee bionic
http://www.animatedprosthetics.com/

BBC Microcomputer User Guide
HTML version of the original BBC Microcomputer user guide.
http://kasoft.freeyellow.com/Central/Kasoft/Typeset/BBC/Intro.html

Intel Corporation
Designs, develops, manufactures and markets microcomputer components of desktop and server systems.
http://www.intel.com

PRAF Microcomputer Technologies Ltd.
PRAFTEC specializes on development, manufacturing and marketing of the computerized automation and control systems, enterprise and home telephony.
http://www.praftec.com

Advanced Microcomputer Systems
AMS is a leader in PC enhancement products that range from ultra-sophisticated add-in board products, through communication products and a complete line of professional software products and development tools.
http://www.advancedmsinc.com/