Adm-3a
Lambert M. Surhone, Mariam T. Tennoe, Susan F. Henssonow
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The ADM-3A was one of the first computer terminals manufactured by Lear Siegler, first produced in 1975.
It had a 12 inch screen displaying 12 or 24 lines of 80 characters
Originally priced at $1195, a DIY kit later sold for $995.
At first only allowing capital letters as ADM-3; the model was quickly supplanted by the more advanced version with both lower case, and uppercase.
Further optional add-ons included a graphics card enabling it to emulate a Tektronix 4014 and an extension port which would allow daisy chaining several ADM-3As on a single RS-232 line.
