**Introduction:**

Calculators are an essential tool for everyone dealing with numbers. Be it a student, a businessperson, or anyone who needs to do some basic arithmetic calculations, calculators have become an indispensable part of our daily lives.

There are different types of calculators available in the market ranging from simple handheld calculators to scientific and graphing calculators. In this article, we will discuss the history of calculators, how they work, and the different types of calculators available in the market today.

## History of Calculators:

The history of calculators dates back to the ancient times when people used various tools and methods to perform calculations. The abacus is one such tool that has been used since ancient times to perform arithmetic calculations.

The first mechanical calculator was invented by Blaise Pascal in the 17th century. It was called the Pascaline and could perform addition and subtraction operations. Other inventors followed suit and developed more advanced calculators capable of performing multiplication and division operations.

In the 20th century, electronic calculators were invented which revolutionized the field of mathematics. These calculators were faster, more accurate, and portable compared to their mechanical counterparts.

**How Calculators Work:**

Calculators use a microprocessor chip to perform arithmetic calculations. When you press a button on the calculator, it sends an electrical signal to the microprocessor which then performs the calculation and displays the result on the screen.

Calculators have several functions such as addition, subtraction, multiplication, division, and more advanced functions such as trigonometric and logarithmic functions. Scientific calculators also have the ability to perform statistical calculations, calculus, and equation solving.

**Types of Calculators:**

**Basic Calculators:** Basic calculators are the most common type of calculators used for simple arithmetic calculations. They can perform addition, subtraction, multiplication, and division operations.

**Scientific Calculators:** Scientific calculators are used for more advanced mathematical calculations such as trigonometry, logarithms, and calculus. They feature dedicated buttons for these functions and also have the ability to store formulas and equations.

**Graphing Calculators:** Graphing calculators are used for complex mathematical calculations and are commonly used by students and professionals. They can graph equations and functions, and also have the ability to perform statistical calculations.

### What is ABC in calculator?

ABC is not a standard function or symbol used in calculators. It is possible that the person asking this question has encountered a specific calculator model that uses ABC as a function, but without knowing more information about the context, it’s difficult to provide an accurate answer.

### Which calculator for maths?

The type of calculator you need for math depends on the level of math you are doing. For basic arithmetic and algebra, a standard four-function calculator will suffice. However, for higher-level math such as calculus, trigonometry, and statistics, you will need a scientific calculator or a graphing calculator.

### How do I calculate scientific calculator?

To use a scientific calculator, first select the appropriate mode (degrees or radians) depending on the type of calculation you are performing. Then input the values for the operation you want to perform using the appropriate buttons on the calculator (such as the sin, cos, and tan buttons for trigonometric functions). Finally, press the equals button to get the result.

### Where can I get a free calculator?

There are many free calculator apps available for download on smartphones and tablets. You can also find free online calculators on various websites such .

**Scientific calculator**

A scientific calculator is a type of calculator designed to perform advanced mathematical calculations such as trigonometric functions, logarithms, and exponents. They typically have a larger number of buttons than a standard calculator, and some models also include features such as equation solving and graphing capabilities.

**Online calculator**

An online calculator is a calculator that can be accessed through a web browser without requiring any software installation. Online calculators can perform a wide range of calculations, from simple arithmetic to complex statistical analyses.

**Google calculator**

Google has a built-in calculator feature that can be accessed by typing in a calculation directly into the search bar. For example, typing “5+3” into the search bar will return the result “8”.

**Percentage calculator**

Percentage calculators are tools designed to help calculate percentages, such as finding what percentage a number represents of another number or calculating discounts and markups.

**Math calculator**

A math calculator is a generic term for a calculator that can perform mathematical operations. This could refer to a standard four-function calculator or a more advanced scientific or graphing calculator.

**Free calculator**

A free calculator is a calculator that can be downloaded or accessed for free, either as a mobile app or online. There are many different types of free calculators available, ranging from basic four-function calculators to advanced scientific and graphing calculators.

**Scientific calculator online**

A scientific calculator online is a free online tool that allows users to perform advanced mathematical calculations without needing to purchase a physical calculator. These calculators can be accessed through a web browser and typically offer all of the functions found on a physical scientific calculator.

**Calculator soup**

Calculator Soup is a website that offers a variety of free online calculators, including basic arithmetic calculators, scientific calculators, and specialty calculators such as loan calculators and calorie counters.

### What is a calculator?

A calculator is an electronic device used for performing mathematical calculations. It can be a physical handheld device or a software application running on a computer or mobile device.

### What types of calculators are available?

There are several different types of calculators available, including basic calculators for simple arithmetic operations, scientific calculators for more advanced calculations like trigonometry and calculus, graphing calculators for complex graphs and equations, and online calculators that can be accessed through a web browser.

### How do I use a calculator?

The exact process for using a calculator will depend on the type of calculator you are using. However, in general, you simply input the values you want to calculate using the buttons on the calculator and then press the equal sign (=) button to get the result.

### How accurate are calculators?

Calculators are generally very accurate, with most models having an accuracy of at least eight decimal places. However, it’s important to remember that errors can still occur due to user error or mechanical malfunction.

### Can calculators perform all types of calculations?

Most calculators are capable of performing a wide range of mathematical operations, but there may be certain calculations that require specialized software or equipment.

### Are calculators allowed in exams?

In many cases, calculators are allowed in exams, but there may be restrictions on the type of calculator that can be used. Some exams may only allow basic calculators while others may permit scientific or graphing calculators.

### Where can I buy a calculator?

Calculators can be purchased from a variety of retailers, including electronics stores, office supply stores, and online retailers.

### Can I use my phone as a calculator?

Yes, most smartphones come with a built-in calculator app that can be used for basic math calculations.

### Are there any free calculators available?

Yes, there are many free calculator apps and online calculators available that can be used for basic and advanced calculations.

### How do I choose the right calculator for my needs?

When choosing a calculator, consider the type of math you will be doing and whether you need basic or advanced functionality. Other factors to consider include the size and portability of the calculator, battery life, and price.

## Conclusion:

Calculators have come a long way since their invention in the 17th century. They have become an indispensable part of our daily lives and have made mathematical calculations easier, faster, and more accurate. From simple handheld calculators to graphing calculators, there are different types of calculators available in the market today to meet every need. Whether you are a student, a businessperson, or anyone dealing with numbers, a calculator is an essential tool that you cannot do without.