Программно-аппаратный текстовый процессор, с хранением данных на аудио кассете. Не от этой ли машинки Лексикон имя взял?
https://www.youtube.com/watch?v=82I1jKHLuXs
10 minute photo/slide tribute to the historic Lexitron Videotype Word Processing computer, from its conception in 1969 to its production in 1972, and its successful growth and eventual purchase by Raytheon Company.
