Welcome to the Wang OIS Information Center!

Projects and information on historic Wang computer equipment

This site is a collection of information I have gathered on the Wang OIS systems over the past several years. Follow the links below to learn more about these unusual and fascinating computer systems.

 What's an OIS? - Brief introduction to the OIS

OIS Hardware - Overview of the various OIS system Master processors

OIS Peripherals - Various peripherals for the OIS

Reference - Technical reference I have put together

OIS 125A - Some pictures of an OIS-125a (105/115/130A are similar)

OIS 140 - Some OIS-140 images

OIS 50 - OIS-50 and parts

OIS IDE Project - Connecting a standard IDE hard disk to an OIS-125A!

140 IDE - Different IDE interface for the OIS 140

OIS Emulator  - Run the OIS OS and applications on a PC!