What is ASCII Code ?
ASCII (American Standard Code for Information Interchange) code is a standard system used to represent text characters as numeric codes in digital electronics and computing. In ASCII code, each character is assigned a unique 7-bit code, allowing for a total of 128 possible characters.
For example, the letter "A" is represented in ASCII code as the number 65. The letter "B" is represented as the number 66, and so on. Punctuation marks, numbers, and special characters also have unique ASCII codes.
Here are some examples of ASCII codes for common characters:
- - The letter "a" is represented by the code 97.
- - The digit 0 is represented by the code 48.
- - The exclamation mark (!) is represented by the code 33.
- - The percent sign (%) is represented by the code 37.
ASCII code has become the standard for representing text characters in computing, and is used in a wide range of applications, including text editors, email programs, and webpage development.
What is Unicode ?
Unicode is a universal character encoding standard that provides a unique code for every character, symbol, and script used in the world's writing systems. It is designed to be a superset of all other character encodings, meaning that it includes all the characters and symbols from all other encoding standards.
Unicode uses a 16-bit or 32-bit code unit to represent each character, allowing for a total of over 1 million unique characters. Unicode supports scripts and languages from all over the world, including Latin, Cyrillic, Arabic, Chinese, Japanese, and many others.
For example, the Unicode code point for the letter "A" is U+0041, while the code point for the Greek letter alpha (Î±) is U+03B1. Some other examples of Unicode code points are:
- - U+2605 for a black star
- - U+1F44B for a thumbs up emoji
- - U+0627 for the Arabic letter alef
Unicode is widely used in modern computing and is essential for ensuring that text content is processed and displayed correctly across different devices, operating systems, and languages.