That depends on your situation. If you have a Unicode-encoded file that you wish to read, you can try to open it with a Unicode-enabled editor, such as SC Unipad (http://www.unipad.org/main/). == ==
256 different characters is not enough Unicode enables the reliable store most of the world's characters in a (2 byte) fixed width mode with 65,564 characters.
Unicode allows 17 "planes" of 2^16 characters. Thus, Unicode characters range from U+0000 to U+10FFFF - a total of 17 * 2^16 or 1,114,112 code points. As of Unicode 5.0.0, 102,012 actual characters have been assigned to code points.
Character literals in Java are stored as UTF-16 Unicode characters. Each character takes up 16 bits of memory, allowing for representation of a wide range of characters in the Unicode character set.
Depends on what you refer to as Unicode. Typically the ones you will see is UTF-8 which uses from up to one to three bytes per character (the two or three-byte characters are usually for characters used in various other languages that are not already covered under the ASCII codepage). Otherwise, the convention states that Unicode is UTF-16.
Unicode is simply an international standard that assigns numerical values to characters. - LOTS of characters - currently over 136,000 of them; and it is designed in a way that even more can be assigned in the future.
Unicode can represent a maximum of 1,144,447 characters, derived from its 17 planes, each containing 65,536 code points. However, the actual number of assigned characters is significantly lower, as many code points are reserved for future use or are designated as non-characters. As of now, Unicode includes over 149,000 characters covering a wide range of scripts and symbols.
200 characters is 200 characters, unless you are talking about Unicode (which isn't Ascii).
The Unicode standard is used to represent all characters, including foreign language characters. It provides a unique number for every character, regardless of platform, program, or language. This allows for consistent encoding and representation of text across different systems.
it support the 65000 different universal character.
unicode
Unicode was first introduced in 1991. The Unicode Consortium, which oversees the development and maintenance of the Unicode Standard, aimed to create a universal character encoding system that could represent text from all writing systems. The first version of the Unicode Standard, Unicode 1.0, was released in October 1991. Since then, it has undergone numerous updates to include a wider range of characters and scripts.
Alt codes for scientific notation are not standardized, but you can use specific Unicode characters to represent elements of scientific notation. For example, you can use Alt codes to create superscript numbers: Alt + 0178 for squared (²) and Alt + 0179 for cubed (³). For other exponents, you may need to use Unicode characters, such as U+2070 for the superscript zero (⁰) and U+2071 for superscript one (¹). For a full range of exponent characters, refer to a Unicode chart.