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…
HP Virtual Museum: 9100A desktop calculator, 1968
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First Electronic Calculator Prototype – Joy of Museums Virtual Tours
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HP 9100A programmable calculator (computer) | Interface
1968 , Volume , Issue Sept-1968
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