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Numerical data is numbers. Non-numerical data is anything else.
A numerical expression is ' 2 + 3' A numerical equation is ' 2 + 3 = 5'.
5.8 is a numerical expression.
Ratios ARE numerical.
Numerical control or lately, computer numerical control.
Historically numerical control began about 1948
The objectives of numerical control are to make more efficient handling of tasks through programmable automation. The first numerical control machines were built in the 1940s and 1950s and have evolved into the machine tools seen today.
John D. McCarroll has written: 'Computer-aided part programming for numerical control' -- subject(s): Data processing, Machine-tools, Numerical control 'Computer-aided programming for numerical control'
Frank Bryant Lockwood has written: 'Fundamentals of numerical control' -- subject(s): Machine-tools, Numerical control
digital numerical control
Computer numerical control
control using numerical data. high degree of accuracy precesion and realiblity. high productivity. reduced inspection. better planing and scheduling
William Charles Leone has written: 'Production automation and numerical control' -- subject(s): Automation, Machine-tools, Numerical control
Computer Numerical Control(ler)
Amit Bhaya has written: 'Control perspectives on numerical algorithms and matrix problems' -- subject(s): Algorithms, Control theory, Mathematical optimization, Matrices, Numerical analysis
H. Wayne Scott has written: 'Computer numerical control grinding of spiral bevel gears' -- subject(s): Computer aided manufacturing, Numerical control, Process control (Industry), Grinding machines, Gears