Scientific
The standard in scientific calculators. The line starting on the hp 35 - hp 65 - hp 67 - hp 41c - hp 15c - hp 35s is the workhorse of the scientific and engineering profession since 1973. RPN programming and key entering makes them extremely fast to use when compared with algebraic entry, and just 15' with it will spoil you for life.
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Assembled HP-41c battery bay and expansion ports module Flat
Product no.: Flex-PCB AssembledFlat
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Classic view
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