|Baud Rates||1200, 1800, 2000, 2400, 4800|
|Phosphors||P4 white, P31 green|
|Refresh Rate||60 Hz|
The TEC 550 was introduced sometime before December, 1968. It generates characters using a vector technique by drawing strokes on the screen, instead of accessing a dot pattern character generator.
- TEC 500 Series Data-Screen Terminal Systems Brochure, December, 1968
- TEC 500 Series Data-Screen Terminal System Brochure, December, 1968