Basic Four 7220
|Basic Four 7220|
|Introduced||prior to May, 1975|
|Baud Rates||300, 2400|
|Refresh Rate||60 Hz|
The Basic Four 7220 terminal was introduced sometime before May, 1975.
The 7220 can only display upper case characters, but uses reverse video to indicate received lower case characters displayed as upper case. Upper and lower case characters can both be transmitted from the keyboard.
- Logic Diagrams for Models 7220 and 7230 Video Display Terminal August 16, 1976
- Service Manual for Models 7220 and 7230 Video Display Terminal August 16, 1976
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