ABSTRACT
Use of calculators is increasing day by day in almost every walk of life. Almost every professional, technical or non-technical is concerned with its usage and wants to remain updated about the recent developments pertaining to the hand-held calculators. There are a large number of varieties/versions of calculators available in the market. The most common types of calculators are those coming from “Casio” and “Sharp”. Surprisingly no single calculator contains all the functions satisfying the needs of different professionals like designers, engineers, students, business people etc. Presently calculator manufacturers, on a large scale, are producing alluring products that stimulate the curiosity of users and generate their appetite for new models. To sum up, the calculator is a high-tech toy that challenges its users to master all functions offered on various models.
