Numerical calculations 56 Calculators 25 Data processing 21 Congresses 15 Mathematics 12 Problems, exercises, etc 10 Programmable calculators 9 Computer programs 8 Engineering mathematics 8 Computers 6 Computer algorithms 5 Electronic digital computers 5 Numerical analysis 5 Magnetic memory (Calculating-machines) 4 Algebras, Linear 3 Design and construction 3 History 3 Structural design 3 Apparent position calculators 2 Approximation theory 2 Artificial satellites 2 Business mathematics 2 CALCULATING-MACHINES 2 Computer arithmetic 2 Deformations (Mechanics) 2 Differential equations 2 Electronic data processing 2 Engineering design 2 Equations, Simultaneous 2 FORTRAN (Computer program language) 2