The IBM 1621 Paper Tape Reader was an external input device used alongside the IBM 1620 Computer (1959) to load programs via one inch wide 8 channel paper tape at a rate of 150 characters per second. The paper tape can be read in three forms – as single strips, as feed from an attached external central paper roll, or as reel-to-reel tape feed. The reader works in tandem with the IBM 1624 Paper Tape Punch, an output device which sits on a shelf inside the lower section of the 1621and is used to store data that in turn can be processed by the tape reader. The models represented here depicts the tape reader with external paper role, and the reel-to-reel versions.
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