What are the Differences between ascii-7 and ascii-8?

Question

What are the Differences between ascii-7 and ascii-8?

Answer 1

According to this site.. (http://www.roysac.com/blog/2008/09/what-is-ascii-art-what-is-ansi-and-more.html)



What is 7-Bit ASCII?

The difference between 7-bit and 8-bit ASCII is pretty simple, assuming that you have a keyboard with the latin alphabet. 7-bit only uses characters that you can find on the keyboard. 8-bit uses additional characters that you cannot find on your keyboard, but which exist in "text mode" of the old MS DOS operating system. MS DOS hat 256 characters for text mode. Some of them are control chracters and not visible, such as Carriage Return, Line Feed (Line Break), the Tab character or the Escape character. The standard US-ASCII characters are the first 128 chracters of the character set, where 97 of them are usable for text and ASCII art.



What is 8-Bit ASCII?

8-bit ASCII art uses primarily characters after the 128 chracters of the US-ASCII character set. You cannot find those characters on your keyboard and could only generate them via programming code, special editors (like TheDraw or ACiDDraw4) or by pressing the ALT-Key and then type the character code (a number between 128 and 255) on your numeric keypad, while keeping the ALT-Key pressed. Those upper or "higher" characters are suitable for basic graphical elements, such as box borders, corners. Those characters are unique to the IBM PC and MS DOS and are not compatible with other operating systems, such as UNIX, Linux or MAC OS.

Answer 2

Ascii 8

Answer 3

What you are finding are extensions to the original 7 bit ASCII code. It is called 7 bit because there was only 128 characters in the set. Codes above 128 can vary depending on who made it, software or a number of other factors. Most of the original internet worked on 7 bit ASCII and 8 bits was binary. You can still do an FTP transfer using 7 bit text or binary modes. Email is also typically limited to 7 bits and the ways around this limitation are generally hidden from most people. Part of the reason may be due to the "char" variable type in C using the 8th bit as a sign bit. The reason it is all in 8 bits is that most computers use 8 bit bytes to communicate these days. You simply ignore the 8th bit or it may be used as a sign bit and even a parity bit in some instances. Shadow Wolf

Answer 4

One bit.



In ASCII-7, 7 bits are used per character. This makes a character set of 2^7 or 128 characters.



ASCII-8 uses 8 bits per character. This makes a character set of 2^8 or 258 characters.

Answer 5

I need more information before I can give an answer