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Code 128 is a high-density linear barcode that can encode all 128 characters of ASCII and Latin-1. It is used for product identification codes in shipping and packaging industries and has three code sets (A, B, C) and a check symbol.
Aztec Code is a matrix code invented by Andrew Longacre, Jr. and Robert Hussey in 1995. It has a bull's-eye pattern at its centre and can use less space than other barcodes because it does not require a blank "quiet zone".
A comprehensive overview of the Unicode characters, covering 161 modern and historical scripts, as well as multiple symbol sets. Learn how to reference Unicode characters using numeric or entity codes, and see the control codes and special characters.
Code 39 is a variable length, discrete barcode symbology that can encode 43 characters, including uppercase letters, numeric digits and special symbols. Learn how Code 39 works, its history, its advantages and disadvantages, and its encoding table.
Code page 437 is the character set of the original IBM PC, including ASCII, diacritics, Greek letters, icons, and symbols. It is also known as CP437, OEM-US, PC-8, or DOS Latin US, and has various display adapters and Alt codes.
A Unicode font is a computer font that maps glyphs to code points defined in the Unicode Standard. Learn about the history, techniques, and challenges of Unicode fonts, and see a list of widely used Unicode fonts with their features and details.
Basic Latin or C0 Controls and Basic Latin is the first block of the Unicode standard, encoding 128 characters including ASCII codes and Latin alphabet. It ranges from U+0000 to U+007F and was included in version 1.0 of Unicode.
The definition of the main system font, 32 (space) to 127 (copyright), are referenced by the system variable CHARS which can be found at memory address 23606/7 (0x5C36/7). It is defined as 256 bytes lower than the first byte of the space character, simplifying the formula for locating a character to CHARS+8×code point. The CHARS value defaults ...