The 990 Synthesizer was introduced in 1972 and operated by punched paper tape, in which the punched holes specified which operation was to be performed. The System 990 Synthesizer was developed in 1984 and used a microprocessor instead of tape.
|Original file type||TIFF|
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Illig, Russell. “Beckman System 990 Synthesizer and Model 990 Peptide Synthesizer,” n.d. Beckman Historical Collection, Box 59, Folder 118. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/ks65hc719.
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