ASCII-Tabelle mit PDF-Download (2024)

FAQs

What is ASCII code in computer PDF? ›

ASCII is a 7-bit character encoding standard used to represent text and other information in digital form. It was developed in 1963 and assigns a unique numeric value to each letter, number, punctuation mark, and control code.

To insert an ASCII character, press and hold down ALT while typing the character code. For example, to insert the degree (º) symbol, press and hold down ALT while typing 0176 on the numeric keypad. You must use the numeric keypad to type the numbers, and not the keyboard.

ASCII is a character encoding system that only includes up to 256 characters, primarily composed of English letters, numbers, and symbols. It uses up to eight bits to represent each character. In contrast, Unicode is a much larger encoding standard that includes over 149,000 characters.

A binary code with eight digits, such as 1101 10112, can be stored in one byte of computer memory. The word "CAT" in a word processor becomes 0100 00112, 0100 00012, and 0101 01002. The word "cat" is 0110 00112, 0110 00012, and 0111 01002. Each letter, number, and symbol is represented by an 8-bit ASCII code.

The ASCII (American Standard Code for Information Interchange) table specifies the characters (column c of the table below) associated with the numbers 0 to 127 (Unicode numbers U+0000 to U+007F). The set of all the characters in the table constitutes the ASCII alphabet.

Standard ASCII codes range from 0 to 127 in Decimal or 00 to 7F in Hexadecimal, they are mainly used for representing characters, such as characters "a" to "z" and number "0" to "9", these are called printable characters, note that code 0 to 31 (Decimal) in Standard ASCII are not printable, they are assigned for ...

To identify a character's ASCII value, it is common to look it up on an ASCII table. The ASCII table pairs each character to its assigned value between 0 and 127.

ASCII originally contained only 128 English-language letters and symbols but was later expanded to include additional characters, including those used in other languages. ASCII continues to exist but has been largely replaced by Unicode, which can be used to encode any language.

Almost all computers now use ASCII or Unicode encoding. The exceptions are some IBM mainframes that use the proprietary 8-bit code called Extended Binary Coded Decimal Interchange Code (EBCDIC).

What is meant by ASCII code? ›

ASCII (American Standard Code for Information Interchange) is the most common character encoding format for text data in computers and on the internet. In standard ASCII-encoded data, there are unique values for 128 alphabetic, numeric or special additional characters and control codes.

ASCII code allows computers to understand how to represent text. In ASCII, each character (letter, number, symbol or control character) is represented by a binary value. Extended ASCII is a version that supports representation of 256 different characters.

Ans. The range of ASCII values for uppercase letters A-Z is 65-90, and the range for lowercase letters a-z is 97-122.

ASCII has the advantage of being widely adopted, making it easy to use and compatible across most platforms. However, its limited character set makes it difficult to represent characters from languages beyond English, and the use of only seven bits can result in a limited number of available characters.