Casio FX 500-550 scientific calculator
2-line display with 16 digits, 406 functions, 40 scientific constants, complex numbers, 23 built-in formulas, base-n calculations
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2-line display with 16 digits, 406 functions, 40 scientific constants, complex numbers, 23 built-in formulas, base-n calculations

Code:
http://rapidshare.com/files/218914322/Casio_FX_500-550.rar
rox1234