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CASIO fx-4000P scientific calculator from 1986
12-20-2015, 08:02 PM
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RE: CASIO fx-4000P scientific calculator from 1986
(12-20-2015 08:42 AM)Tugdual Wrote:  Compared to the recent hp made in China, the design of these old Casio is very impressive.
I'd love to own one of these old Casio. Is it as robust as it looks like? Easy to open and clean?

These machines are robust and easy to clean, but the weakest point is the keyboard operation. The key travel is very short and mushy, nothing compared to what we expect from a proper genuine HP machine (or from the latest SwissMicros for that matter).
On the positive side, the key registration is very reliable, contrary to what some recent HP calculators like the HP-30B are doing (despite a positive mechanical action, the registration is not always reliable, be it because there are quality control issues or any other reason).

Jose Mesquita
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RE: CASIO fx-4000P scientific calculator from 1986 - jebem - 12-20-2015 08:02 PM



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