HP 48SX
HP-48S/SX
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HP-48S/SX
HP 48SX Calculator from 1990 - YouTube
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HP 48SX Calculator Demonstration Card - YouTube
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1989 Hewlett Packard HP 48SX Calculator with Case and Guide - Tested | eBay
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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 Calculators on Android, iPhone and Windows – TexasSwede
HP Calculator Pictures
HP 48SX - Hardware Collection - Andrej Bukošek
HP-48S/SX
