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My first graphing scientific calculator back in the middle - late 1980's. It has 422 bytes of programmable memory using a tokenized language which allows to create interesting tasks not covered by the built in functions, (such as 3d mesh graphics for functions, graphing the Mandelbrot set, and so on). Programming is easy, and the only shortcoming is the 422 bytes of memory only, but that can be sorted out doing clever programming by writing more efficient, and smaller code. This calculator is quite durable, dependable, and easy to use. Battery life is awesome. This product comes with its original manual, a sheath, and its original boxing, (never opened before by the way). Old fashioned nowadays, but an excellent product.
Verified purchase: Yes | Condition: New
Excelente calculadora para científicos e ingenieros. Con un diseño retro pero totalmente funcional.
Verified purchase: Yes
I didn't expect it is in o good shape. Exactly what I wanted.
Verified purchase: Yes | Condition: Pre-owned
Excellent product but shipping costs are very expensive!
Verified purchase: Yes | Condition: Pre-owned
Verified purchase: Yes | Condition: Pre-owned