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File:Hewlett Packard Model HP 48SX Scientific Expandable Electronic Pocket Calculator, Made In Singapore, Available 1990 - 1993 (21761270898).jpg - Wikimedia Commons
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HP-48S/SX
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Hewlett-Packard HP 48SX Scientific Expandable Handheld Electronic Calculator | National Museum of American History
HP - HP 48SX - - HP HP 48SX - hp.ledudu.com - Hp pocket computer & calculator gallery of ledudu. - RETRO CALCULATOR FX PB SF LC SL HP FA
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HP Computer Museum
HP Calculator Pictures
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HP-48S/SX
HP 48SX. Got me through University, Grad School, and Work. Powerful and built like a tank. Gotta love the felling of those keys! : r/BuyItForLife
HP-48S/SX
HP Calculators on Android, iPhone and Windows – TexasSwede
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Amazon.com: HP 48SX Engineering Mathematics Library: An Introduction to Symbolic and Complex Computation with Applications: 9780123523808: Holland, John F.: Books
Hewlett Packard HP 48SX Graphing Calculator with Case Manual & 82211A Library | eBay
HP 48GX Graphing Calculator - Black for sale online | eBay