What is the difference between unicode and ascii?
Unicode (Unicode, Unicode, Single Code) is an industry standard in the field of computer science, including character sets and coding schemes. Unicode is created to solve the limitations of traditional character encoding schemes. It sets a uniform and unique binary encoding for each character in each language to meet the requirements of text conversion and processing across languages ​​and platforms. R&D began in 1990 and was officially announced in 1994.
Unicode is created to address the limitations of traditional character encoding schemes. For example, the characters defined in ISO 8859 are widely used in different countries, but incompatibility often occurs in different countries. A lot of traditional coding methods have a common problem, that is, allowing a computer to handle a bilingual environment (usually using Latin letters and its native language), but not supporting multiple languages ​​at the same time (meaning that multiple languages ​​can be mixed at the same time).
effectEnables computers to implement cross-language, cross-platform text conversion and processing.
What is ASCIIASCII (American Standard Code for InformaTIon Interchange) is a set of computer coding systems based on the Latin alphabet, mainly used to display modern English and other Western European languages. It is the most versatile single-byte encoding system available today and is equivalent to the international standard ISO/IEC 646.
Please note that ASCII is an abbreviation for American Standard Code for InformaTIon Interchange, not ASCII (Roman numeral 2), and many people have misunderstandings in this place.
In the computer, all data is stored in binary numbers when it is stored and operated (because the computer uses high and low levels to represent 1 and 0, respectively), for example, 52 letters like a, b, c, and d ( Including uppercase), as well as numbers such as 0, 1, and some commonly used symbols (such as *, #, @, etc.) are also represented by binary numbers when stored in a computer, and which binary numbers are used to indicate which symbol, of course, each Individuals can agree on their own set (this is called coding), and if you want to communicate with each other without causing confusion, then everyone must use the same coding rules, so the relevant US standardization organizations have introduced ASCII code, unified It is specified which binary numbers are used to represent the above common symbols.
The American Standard Information Exchange Code is a standard single-byte character encoding scheme developed by the American National Institute of Standards (ANSI) to use text-based data. It began in the late 1950s and was finalized in 1967. It was originally a US national standard for Western computer character encoding standards used by different computers when communicating with each other. It has been designated as an international standard by the International Organization for Standardization (ISO) and is called the ISO 646 standard. Applies to all Latin alphabet letters.
Way of expressionASCII codes use a specified combination of 7-bit or 8-bit binary numbers to represent 128 or 256 possible characters. The standard ASCII code, also known as the base ASCII code, uses a 7-bit binary number (the remaining 1 bit binary is 0) to represent all uppercase and lowercase letters, numbers 0 through 9, punctuation, and special controls used in American English. character. among them:
0 to 31 and 127 (33 in total) are control characters or communication-specific characters (the rest are displayable characters), such as control characters: LF (line feed), CR (carriage return), FF (page change), DEL (delete) , BS (backspace), BEL (bell), etc.; communication-specific characters: SOH (header), EOT (end of text), ACK (acknowledgement), etc.; ASCII values ​​of 8, 9, 10, and 13 are converted to Grid, tabulation, line feed, and carriage return characters. They don't have a specific graphical display, but they have different effects on text display depending on the application.
32 to 126 (95 in total) are characters (32 is a space), of which 48 to 57 are 0 to 9 Arabic numerals.
65 to 90 are 26 uppercase English letters, 97 to 122 are 26 lowercase English letters, and the rest are some punctuation marks, arithmetic symbols, and so on.
Also note that in standard ASCII, its most significant bit (b7) is used as the parity bit. The so-called parity refers to the code used in the transmission process checks whether a method of error occurs, it normally two kinds of odd and even parity. Odd parity stipulates: the correct code must have an odd number of 1 in a byte. If it is not an odd number, add 1 to the highest bit b7; even parity specifies: the correct code must be an even number of 1 in a byte. If it is not even, add 1 to the highest bit b7. The last 128 are called extended ASCII codes. Extended (or "high") ASCII is supported on many x86-based systems. Extended ASCII allows the 8th bit of each character to be used to determine the additional 128 special symbol characters, foreign letters, and graphic symbols.
ZGAR Aurora 500 Puffs
ZGAR electronic cigarette uses high-tech R&D, food grade disposable pod device and high-quality raw material. All package designs are Original IP. Our designer team is from Hong Kong. We have very high requirements for product quality, flavors taste and packaging design. The E-liquid is imported, materials are food grade, and assembly plant is medical-grade dust-free workshops.
Our products include disposable e-cigarettes, rechargeable e-cigarettes, rechargreable disposable vape pen, and various of flavors of cigarette cartridges. From 600puffs to 5000puffs, ZGAR bar Disposable offer high-tech R&D, E-cigarette improves battery capacity, We offer various of flavors and support customization. And printing designs can be customized. We have our own professional team and competitive quotations for any OEM or ODM works.
We supply OEM rechargeable disposable vape pen,OEM disposable electronic cigarette,ODM disposable vape pen,ODM disposable electronic cigarette,OEM/ODM vape pen e-cigarette,OEM/ODM atomizer device.
Aurora 500 Puffs,Pod System Vape,Pos Systems Touch Screen,Empty Disposable Vape Pod System,500Puffs Pod Vape System
ZGAR INTERNATIONAL(HK)CO., LIMITED , https://www.szvape-pen.com