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Making tracks into programming: A step-by-step learning guide to the power, ease, and fun of using your TI Programmable 57 : a complete owner's manual for the TI Programmable 57: texas-instruments-incorporated: 9780895120045:
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OLD-COMPUTERS.COM : HISTORY / detailed info
Virtual Museum of Calculators
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Introducing Programmable Calculator JS | PCjs Machines
Virtual Museum of Calculators
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TI-57 - Wikipedia
Texas Instruments Programmable 59 Handheld Electronic Calculator | National Museum of American History
