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Keywords: SEACComputer 020.jpg The teletype keyboard and printer were used for direct input and output with numbers and instructions coded in hexadecimal notation Indirect operation was also possible in the early operation of SEAC through the use of punched paper tape National Institute of Standards and Technology 7/1/1950 National Institute of Standards and Technology PD-USGov-NIST PD-USGov SEAC computer Teleprinters |