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The HP-20S (F1890A) is an algebraic programmable, member of Pioneer series of HP calculators produced from 1988 to 2003. It is similar to HP-21S. It has ninety-nine steps of fully merged program and ten memory registers. ==Libraries== There are six libraries in the ROM, which could be loaded to RAM and used and edited as user programs. *A- () finder, finds a root of f(x)=0 *B- () integral, calculates definite integral using Simpson method *C- () complex numbers manipulations *D- (by 3 ) matrix manipulations and line equations solver *E- () quadratic equation solver *F- () curve fitting, using exponential, logarithmic and power functions 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「HP-20S」の詳細全文を読む スポンサード リンク
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