electronic calculator
Pocket math machine
An electronic calculator is a device that performs mathematical operations using electronic circuits rather than mechanical components.
Most are handheld with a keypad and digital display, though the term also covers calculator apps on phones and computers.
Basic models handle arithmetic while scientific and graphing calculators tackle advanced functions like trigonometry and statistics.
I still keep an electronic calculator in my desk drawer even though my phone does the same thing.
- LCD displayLiquid crystal visual output
- keypadButton array for input
- clear buttonErases current input
- additionJoining quantities mathematically
- subtractionRemoving quantities mathematically
logarithms · education · trigonometry · solar panel · circuit board · microprocessor · integration · floating point · number crunching · accounting · differentiation · battery · multiplication · memory chip · division · scientific research · retail transactions · office supplies
- calculating machinesadding machine, difference engine, abacus, slide rule, adder
electronic calculatorabacus
Bead-and-wire arithmetic tool
slide rule · tally sticks · adding machine · quipu · astrolabe
electronic calculatormental arithmetic
Computing numbers without tools
mental calculation · mental math · pencil and paper · estimation
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