Casio fx-7000G
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Casio fx-7000G
- Type: Programmable RPN Electronic Calculator
- Size: 6.5 x 3.25 inches / 16.5 x 8.5 cm
- Serial number: 0D304A
- Date of Manufacture: c. 1985
In our senior year of high school, in 1982, a couple of friends and I designed our dream calculator. We called it the PITH-1C, "PITH" being the only word that we could get adding the letters "HP" and "TI". The PITH-1C featured many features found in the TI-59 and the HP-41. One notable feature was a selector switch (I remember this being a slide switch) that would choose between algebraic and RPN modes. It had constant memory and a magnetic card reader built in. And, as a plug-in option, it could have a 100x100-pixel graphics display.
It took three years for a graphic calculator to be released by a major manufacturer. Introduced in 1985, the Casio fx-7000G was the first graphic calculator to hit the market. No RPN, alas. It would take HP nearly two years to finish up the HP-28 and TI took nearly 5 years to come out with the TI-81. The PITH-1C never did make it to a factory floor.
The fx-7000G had 422 bytes of program memory which went a long way and a 95x63-pixel graphics display that went a lot longer, later being adapted by TI for their graphic calculators.
With vinyl case.
