Wanted: Research Inc. Teleray terminals

Research Inc was a company here in MN. Their model 3300 was used quite extensively in schools around the state to access the TIES and MECC timesharing networks that provided computing to grade schools, junior highs and highschools throughout the 70's and 80's. They were almost always paired with a Multi-Tech FM300 or FM30 acoustic coupler (also a MN company). Research Inc main business was process control equipment and it was my understanding that they started making their own CRT terminals for that market. I had a 3300 for many years when I was a kid. I have a manual for it that includes schematics. The CRT in those units was built by Ball Brothers, yet another MN company. They were very heavy but built like a tank. All steel enclosure. The 3300 had no processor of any sort. Was all 7400 TTL and used a 2513 character generator ROM. It was uppercase only and had no cursor control other than <CR> and <LF>. It was pretty much a glass teletype. Max speed, 1200 baud but switchable to 300 and 110 too. It used 1401 or 1404 shift registers for the display buffer so there was no RAM in it either. I modified mine to add lower case capability with a second 2513 char generator and some additional decoding. There was no way to get decenders on the lowercase letters though so they just floated up a little next to the uppercase chars. But it was like a small miracle to have both upper and lower case right there on _my_ screen. You and I are competing to find one of these terminals. I feel a little bit of pain each time I think about the day I got rid of the one I had. Chris On Tuesday (03/13/2012 at 10:56AM -0600), Richard wrote: -- Chris Elmquist