Calculators.

Algorithms for RPN calculators Ball, John A. 1978 Arithmetic and calculators Chinn, William G. 1978 College algebra with calculators Hestenes, Marshall D. 1982 Financial analysis with an electronic calculator White, Mark A. 2004 How to use adding and calculating machines; ten-key, full-key, rotary, key-driven Walker, Arthur 1960 Introduction to technical mathematics Hyatt, Herman R. 1979 Programmable calculators Aronofsky, Julius S. 1978 The personal finance calculator Faerber, Esme 2003 Using financial and business calculators Vashist, Mridu 1997