The control characters in ASCII still in common use include: 0 (null, NUL, \0, ^@), originally intended to be an ignored character, but now used by many programming languages including C to mark the end of a string.7 (bell, BEL, \a, ^G), which may cause the device to emit a warning such as a bell or beep sound or the screen flashing.8 (backspace, BS, \b, ^H), may overprint the previous character. Before discussing the output, let's remember some history. It allows me to enter letters, numbers and spaces but it doesn't allow me to do backspace. Escape sequence: '\n' Line feed is probably the most frequently used of the special ASCII characters. I tried your code on my computer (Windows Vista 32 bit), and I found this:the BACKSPACE key produce the code 8; Let's see: à could be produced using the three character sequence a BS ` (or, using the characters' hex values, 0x61 0x08 0x60). Nowadays this t… Look at the MDSN documentation about ASCII characters: ASCII Character Codes Chart 1[] They state: "ASCII code 127 has the code DEL.Under MS-DOS this code has the same effect as ASCII 8 (BS). It is the following: namely positioning the accent first, and then the base letter on its position. If you printed the character in early computer technology you couldn't erase it, so in output backspace was sometimes used in the function of generating accented characters in ASCII. 144 64 d. This operation may erase the character that is placed leftwards of the cursor in output. Now imagine that you do not know size of your array, set, list or whatever you want to print and it might be zero. Code 8 is Ctrl+H or Backspace. Escape sequence: '\t' The tab helps us when we want to format the output. ASCII code 08 = BS ( Backspace ) ASCII code 09 = HT ( Horizontal Tab ) ASCII code 10 = LF ( Line feed ) ASCII code 11 = VT ( Vertical Tab, male symbol, symbol for Mars ) ASCII code 12 = FF ( Form feed, female symbol, symbol for Venus ) ASCII code 13 = CR ( Carriage return ) ASCII code 14 = SO ( Shift Out ) ASCII code 15 = SI ( Shift In ) Besides, the delete key has one more function: it frequently works as a generic command to remove an object (for example an image inside a document, or a file in a file manager), while backspace usually does not. First he or she had to type a lowercase letter A, press backspace, and then the acute accent key. Look at the MDSN documentation about ASCII characters: ASCII Character Codes Chart 1[] They state: "ASCII code 127 has the code DEL.Under MS-DOS this code has the same effect as ASCII 8 (BS). If you've already printed sth. In nowadays computers deletes text following it. int index = richTextBox1.SelectionStart; richTextBox1.Text = richTextBox1.Text.Remove(richTextBox1.SelectionStart - 1, 1); richTextBox1.Select(index - 1, 1); richTextBox1.Focus(); //This has worked for me. Danny Beckett. asked Jul 28 '09 at 2:49. Place the cursor one position to the left. Let's see an example. Permalink Posted 6-Feb-12 19:34pm. Before discussing the output, let's remember some history. hex code: 2408 (html ␈). Place the cursor one position to the left. There is an opposite method for diacritical marks, which is used by some software (like TeX or Microsoft Windows). It is the basis for such spacing modifiers in computer character sets such as the ASCII caret (^, for the circumflex accent). ( Interpunct or space dot )ASCII code 251 = ¹ ( Superscript one, exponent 1, first power )ASCII code 252 = ³ ( Superscript three, exponent 3, cube, third power )ASCII code 253 = ² ( Superscript two, exponent 2, square, second power )ASCII code 254 = ■ ( black square )ASCII code 255 = nbsp ( Non-breaking space or no-break space ). Let's move on to the backspace. Octal escape sequences can never be longer than three digits and are terminated by the first character that is not an octal digit. The ASCII codes are divided into chunks: Codes 0 through 31 are control characters. This method is also called an overstrike. Initially it was used in order to designate previously erased characters on paper tape, because any character could be changed to all ones by punching holes in any place. EOT (end of transmission) 36 44 24 $ 68 104 D. 100. Code 9 – horizontal tab. 35. On VT100 compatible terminals, this is the character produced by the key marked ⌫ . However, the backspace primer function, deleting the character before the cursor, remains. How could a typist create a lowercase letter A with acute accent (á). Please help me. Code 127 is the Delete code, which may backspace and erase on some terminals, or display a character on others. In paper media for computers the delete key would knock out all the holes to cross out a character. However, the actual key may be called in many different ways, for example delete, Erase (for example in One Laptop Per Child), or with a left pointing arrow. c# keypress. //This will help the button to work as backspace button. Although you can see a full, detailed chart by visiting the ASCII Table web site. In computing it is the last character in the ASCII … Still, the first 128 characters in Unicode are the basic ASCII characters. The following C language source code can be compiled to display ASCII codes and characters. The DEL code can be generated by the CTRL + BKSP key." On modern machines it is called backspace and doesn't match the PC delete key. For example, you can give the ASCII backspace character as the normal C escape sequence ( \b ), or you can code it as \010 (octal) or \x008 (hexadecimal). For example, code 13 is Control-M, also written as ^M. … For example, you can give the ASCII backspace character as the normal C escape sequence (\b), or you can code it as \010 (octal) or \x008 (hexadecimal). Delete key can't be technically called a part of the C0 control character range. int code: 9224 (html ␈)
share | follow | edited Sep 1 '14 at 10:40. You can use only the digits 0 through 7 in an octal escape sequence. For the username I am using getchar(), where while entering the username if the user presses the backspace key, on the keyboard, the previous character gets deleted, on it's own, I mean I don't need to write any explicit code to do this. Buloy Buloy. Sometimes the delete character is also called a rubout. The backspace key is often matched to the delete character (0x7f in ASCII or Unicode) in modern systems. A special symbol for "backspace" exists as U+232B ⌫ but its use as a keyboard label is not universal. How to type or write ASCII code Backspace, BS backspace,ascii,8, ascii art, ascii table, code ascii, ascii character, ascii text, ascii chart, ascii characters, ascii codes, characters, codes, tables, symbols, list, alt, keys, keyboard, spelling, control, printable, extended, letters, epistles, handwriting, scripts, lettering, majuscules, capitals, minuscules, lower, case, small, acute, accent, sharp, engrave, diaresis, circumflex, tilde, cedilla, anillo, circlet, eñe, enie, arroba, pound, sterling, cent, type, write, spell, spanish, english, notebooks, laptops, ascii, asci, asccii, asqui, askii, aski, aschi, aschii, (344) . The backspace key is usually used to go back a page or up one level in graphical web or file browsers. add a comment | 8 Answers Active Oldest Votes. I tried your code on my computer (Windows Vista 32 bit), and I found this:the BACKSPACE key produce the code 8; It represents the Enter key on a PC. Nowadays backspace composition is out of use with typical digital displays or typesetting systems that we use nowadays. In some typewriters there was a long system of typing. Escape sequence: '\b' This one is not as often used as null. This operation may erase the character that is placed leftwards of the cursor in output. Everybody knows what does the term "backspace" means, as well as knows its primer function: to delete the character to the left of the cursor. If you want to print your array and you've defined it up front - its size is always non zero. On the click event of button write the following code. The backspace and the delete key are two different keys. Nowadays this thing is widely criticized and not supported at all. The solution to this madness, is to focus on 1 convention, and map all of your keyboard keys to the convention you specified, for all your applications. 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