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The IBM 602 (302 words) |
 | The 602 did not perform reliably in the field, and by 1948 was upgraded to the 602-A (a "602 that worked", designed by |
| The -A model is distinguishable from the original 602 by its V-necked input-card hopper, the little viewport above the output hopper, centered nameplate, and lower-slung racing stripe. |
| Technical papers and manuals of the 1940s and 50s were full of plugboard wiring diagrams such THIS ONE, from "Mass Spectrometer Calculations on the IBM 602-A Calculating Punch" by W.H King Jr. |
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