![]() This stems from the fact that each character's width is exactly the same (or rather, the advancement for each character is constant). Let's investigate the problem.ĪSCII art depends on the usage of a monospaced font because it is what allows us to perfectly align characters. But even if they are displayed using a fixed-width font, things can go wrong when using Unicode characters, like in the example from Wikipedia below (running on OS X 10.9 left side shows default rendering while right side shows the correct behaviour). ![]() It is crucial that such pictures are rendered using a monospaced font, otherwise they would appear misaligned. ASCII Code - Dec.ASCII art, or more generally text-based art, uses characters to represent pictures. Here are the additional ASCII characters developed in the later phase once it was extended from 7-bit to 8-bit. Since this control character consists of the same number on all positions, during the typewriter era it was possible to invalidate another character by punching out all the positions (Delete) Marks the separation of logical data blocks and is hierarchically ordered: file as the largest unit, file as the smallest unit.(File Separator, Group Separator, Record Separator, Unit Separator)ĭeletes a character. Initiates an escape sequence and thus gives the following characters a special meaning (Escape) Replacement for a faulty sign (Substitute) Indicates the end of the storage medium (End of Medium) Makes it clear that a transmission was faulty and the data must be discarded (Cancel) Marks the end of a transmission block (End of Transmission Block) Synchronizes a data transfer, even if no signals are transmitted (Synchronous Idle) ![]() Negative response to a request (Negative Acknowledge) Switches the display back to the normal state (Shift In)Ĭhanges the meaning of the following characters (Data Link Escape)Ĭontrol characters assigned depending on the device used (Device Control) Switches to a special presentation (Shift Out) Moves the cursor back to the first position of the line (Carriage Return) The vertical tab lets the cursor jump to a predefined line (Vertical Tab) Lets the cursor move back one step (Backspace)Ī horizontal tab that moves the cursor within a row to the next predefined position (Horizontal Tab)Ĭauses the cursor to jump to the next line (Line Feed) Gives a positive answer to the request (Acknowledge) Marks the end of a completes transmission (End of Transmission)Ī request that requires a response (Enquiry) Indicates the end of the message (end of text) The null character prompts the device to do nothingĮnds the header and marks the beginning of a message. Here’s the list of 128 characters defined in the ASCII code. Here’s the full list of ASCII characters, letters, symbols and signs, arranged in the order of character types. It was later expanded by IBM to an 8-bit code and 256 characters. It includes letters, punctuation marks, numbers and control characters. The code consists of 33 non-printable and 95 printable characters. Now, ISO 646 is the internationally defined character sets standard.ĪSCII started a 7-bit code, with 128 characters. Approved by the American Standards Association (now known as ANSI for American National Standards Institute) in 1963, ASCII defined the standard for displaying characters on electronic devices.Īlmost all computer systems today use the ASCII code to represent characters and texts. ![]() ASCII is an abbreviation for the American Standard Code for Information Interchange.
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