A calculator is a useful machine to solve arithmetical problems. In this article, you will get to know about its history, types, advantages & disadvantages.

## What is Calculator?

It is an electronic device. It makes the difficult calculations so easy and on tips. The machine is fully equipped with the functionality of solving various problems. For example, Addition, subtraction, Multiplication and Division. Above all, it is no more related to these four functions only. More functional and technical devices are available to give a great experience to the user. These require some sort of energy to operate. Therefore, most of simple calculators are designed with the battery.

In addition, the highly scientific machine uses electricity to run. If you are thinking, who use this kind of electrical device. So, to clarify this, you must have seen engineering students using scientific calculators for their calculations. Now, just think about the wide operations performing by the scientists. Definitely, it needs a highly scientific and functional machine. For instance, Abacus is still in use by the professionals. Moreover, school boards have designed a special module to teach this calculation tool to primary students. So, now you know the importance of this amazing device. Let’s be familiar with its pioneering.

## History of Calculator

The importance of this helpful tool was known in the early times. At that time, early men use bones, pebbles and other objects to tally the calculations. But, it was very limited in nature. So, when the first mainframe computers came into existence. It was using vacuum tubes and transistors. That leads to stepping stones to develop an electronic calculator.

Therefore, the first electronic calculator was launched by Casio computer company in 1957. followed by a series of models with compact technology. Some leading manufactures opted for this technology to cover this new market. Like Canon, Sony, Toshiba, Olivetti, etc.

In the mid-’60s to the ’70s, there was the time of programmable calculators. Those were heavy desktop machines with the large needs of AC power supply.

Then, there comes a time in the ’70s. The revolution in calculator manufacturing. Companies started manufacturing pocket calculators. Moreover, it has great size and less need of power to solve the problem. The cost of these calculators is also very less.

Afterward, the innovations and updates in this device industry are still continuing. Meanwhile, manufacturers are putting all their efforts and research and development techniques to improve the technology for multi-purposes.

## Designing of the Calculator

The design of the calculator is very simple. It has various components to input the problem, display the output of the problem. However, Memory for recording the data contains cells as a power source. The key layout of the device is also very simple for providing ease to the user.

## Types of Calculator

There are various kinds of calculators available in the market to solve various arithmetical problems. some of are as follows:

### Math Calculator

It is a simple device available to solve simple problems. such as additions, subtraction, multiplication and division. This basic model is mainly in use by the students and shopkeepers.

### Fitness Calculator

This is a famous tool in fitness freaks. It calculates various fitness parameters. such as BMI, calorie count, Body fat, BMR, ideal weight. Moreover, Army body fat, weight watcher, lean body weight and healthy weight.

### Abacus Calculator

Abacus is very famous calculating device since ancient times. Now, it is mainly used to teach arithmetic calculations with its beads frame. Moreover, it is very beneficial for visually impaired people.

### Finance Calculator

This type of device is used by the finance industry. To calculate various numbers and parameters. For example, Future value of the investment, Compound interest, time period of the loan, annuity period/ payment. Along-with, interest calculations.

### Science / scientific Calculator

This machine is mainly designed for the use of scientists, engineers and technical persons. It uses JavaScript for solving the problem. You can input the most difficult data in this. Consequently, it will give the result in nanoseconds.

### Loan Calculator

The loan calculating device helps in measuring the exact amount of loan. Like an amortized loan, deferred payment loan and Bond. It can provide the following features and operations. such as:

- Paying back of fixed amount.
- Repayment of lump-sum amount.
- Periodic repayments, etc.

### Currency Calculator

The widely usable converter is a currency calculation device. As it converts the value of the currency of different countries. The manufacturers enter the market rates in this calculation function. Consequently, it converts the input of one country’s currency into the other.

## Advantages

- You can solve very tedious and most difficult arithmetic problems.
- It is very portable and easy to use machine.
- Moreover, the biggest advantage is calculation is always correct.

## Disadvantages

- On the other hand, it is a machine. which can breakdown and make noise.
- You need to take basic training to operate this device.
- Some technical calculators are costly.

**General FAQs**

### Where is the calculator on my device?

It is simple to locate the calculation app on your Phone. Follow these simple steps as: Click on the Apps icon> Click on the tools folder> Now, open your calculator. Usually, Mobile phones have basic calculation applications.

### Is a calculator a computer device?

Yes, it is a small computer. This is very handy and convenient to solve arithmetical problems. In addition, some technical calculators allow the user to edit and program.

### How can I install/ download Calculator on my phone?

Every mobile user is habitual to use this device for solving the arithmetical problems. If you don’t have a calculator app in default apps. you can install it on your phone. The android users can install Google’s app. that is very decent. Other options are also available. like Calc, Calcu, financial calculators, Hiper Scientific.

### What is the Percentage Calculator?

Percentage calculator is a free tool available on the internet. This is mainly in use to calculate percentages of any amount and quantity. The website is capable to provide the solution in different forms. Such as, what is the percentage, what is the number of this percentage. Along with, the increase and decrease in percentage. Therefore, it is providing maximum utility to the user in percentage calculations.

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