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HP 9100A programmable calculator (computer) | Interface
Hewlett-Packard 9100 - Computer Calculator For Math And Science (1968) - YouTube
Hewlett Packard HP Oscilloscope Measurement Error Calculator 1968 | eBay
HP - #TBT In 1968, Bill and Dave created HP 9100A, the world's first programmable scientific calculator. Today, we follow in their footsteps with another mathematical innovation: HP Prime. http://hp.tl/6185BKgVx | Facebook
HP 9100A: Launching the PC Revolution - HP History
The HP-35
Category:HP-9100 - Wikimedia Commons
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Hewlett-Packard 9100A - Wikipedia
HP 9100B was an improved version of HP 9100A, a first Hewlett Packard calculator introduced in 1968. The HP 9100B is a scientific desktop calculator with magnet…