What are the most common text encodings used today?

In one line

The rule

Text encoding is a system that assigns a unique number (code) to each character (letter, digit, or symbol) so that computers can understand and display text.

Let's understand it simply

Imagine you want to send a message to your friend using only numbers. You decide that A = 1, B = 2, and so on. Now, if you write 3, your friend knows it means C. Computers do something similar. They cannot understand letters directly. So, they use text encodings to change every letter or symbol into a number. When you type 'नमस्ते' or 'Hello', the computer saves it as a set of numbers using a text encoding.

How it works

1. Every character (A, B, 1, @, क, etc.) is given a unique number.
2. When you type, the computer changes your letters into these numbers.
3. When you open the file, the computer reads the numbers and shows the letters again.
4. If two computers use the same encoding, they will show the same text.

The story behind it

The first popular encoding was ASCII (American Standard Code for Information Interchange), made in the 1960s in the USA. It only had English letters and a few symbols. As computers spread worldwide, people needed to write in Hindi, Tamil, Chinese, Arabic, and more. So, new encodings were made. The most important is Unicode, which tries to cover every language on Earth.

Where you see it in real life

• SMS on your phone: Uses text encoding to send messages. If you use only English, it may use GSM 7-bit (a kind of ASCII). For Hindi, it uses Unicode.
• Websites: Most websites use UTF-8 (a type of Unicode) so people everywhere can read them.
• Word files: When you save a document, the text is stored using an encoding.
• Programming: When you write code, the computer reads your text using an encoding.
• Email: Emails use encodings to make sure your message looks the same everywhere.

Why it matters

• Lets people use computers in any language: Hindi, Tamil, English, Chinese, etc.
• Prevents text from turning into strange symbols (like 'ä' instead of 'ä').
• Needed for websites, apps, and messages to work correctly everywhere.
• Important for exams and jobs in IT, programming, and web design.

Common mistakes

• Thinking all encodings are the same: ASCII cannot show Hindi or Chinese, but Unicode can.
• Mixing up encodings: If you open a Unicode file as ASCII, you will see junk characters.
• Forgetting to set the right encoding in a program or website, which causes text errors.

Remember it

ASCII is for basic English; Unicode (like UTF-8) is for all languages.