INTRODUCTION (c) Africa Studio/Shutterstock.com Electromechanical, mechanical electronic, or electronic devices that automatize mathematical calculations are referred to as calculators. Calculators perform the most basic Arithmetic operations--subtraction, addition multiplicationand division. They can also perform more complex calculations, such as trivial and inverse trigonometric calculations ( see trigonometry). A few technological advances of recent times have had such an impact influence on our lives such as the handheld, or pocket, electronic calculator . These calculators are utilized to save time as well as reduce the likelihood of making mistakes and are found wherever there are people who frequently deal with numbers - in offices, stores, banks, schools, laboratories, and even in homes. The earliest calculators were mechanical. they carried out calculations using mechanical components such as disks gears, drums and drums. They were powered either b...
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