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1. #What is a caret symbol drivers#
2. #What is a caret symbol software#
3. #What is a caret symbol code#
4. #What is a caret symbol windows#

The actual meaning or interpretation of the individual control-codes is not prescribed by the caret notation, and although the ASCII specification does give names to the control-codes, it does not prescribe how software should respond to them. Although the use of control-codes is somewhat standard, some uses differ from operating system to operating system, or even from program to program.

#What is a caret symbol drivers#

On a US keyboard layout ctrl+ / produces DEL and ctrl+ 2 produces It is also common for ctrl+ space to produce notation is used to describe control characters in output by many programs, particularly Unix terminal drivers and text file viewers such as more and less commands. Usually the need to hold down ⇧ Shift is avoided, for instance lower-case letters work just like upper-case ones. Although there are many ways to represent control characters, this correspondence between notation and typing makes the caret notation suitable for many applications. EOT) cannot be entered directly from a keyboard. This is practical, because many control characters (e.g. Many computer systems allow the user to enter a control character by holding down Ctrl and pressing the letter used in the caret notation. Also see the bar notation used by Acorn Computers, below. Some programs that produce caret notation show these as backslash and octal (" \200" through " \237"). There is no corresponding version of the caret notation for control-codes with more than 7 bits such as the C1 control characters from 128–159 (0x80–0x9F). When converting to a control character, except for '?', masking with 0x1F will produce the same result and also turn lower-case into the same control character as upper-case.

#What is a caret symbol code#

This same operation is done both to convert from a control code to the character to print after the caret, and the reverse to convert a character to a control code. This is identical to adding 64 modulus 128, or adding 64 and masking with 0x7F. The conversion is a bit-wise exclusive or with 0x40 (64). Only the use of characters in the range of 63–95 (" is specifically allowed in the notation, but use of lower-case alphabetic characters entered at the keyboard is nearly always allowed – they are treated as equivalent to upper-case letters.

#What is a caret symbol windows#

Seven ASCII control characters map outside the upper-case alphabet: 0 ( NUL) is 27 ( ESC) is ^, 30 is ^^, 31 is ^_, and 127 ( DEL) is ^?.Įxamples are " ^M^J" for the Windows CR, LF newline pair, and describing the ANSI escape sequence to clear the screen as " ^[[3J". A useful mnemonic, this has the effect of rendering the control codes 1 through 26 as ^A through ^Z. The character has the ASCII code equal to the control code with the bit representing 0x40 reversed. The notation consists of a caret ( ^) followed by a single character (usually a capital letter). The meaning or interpretation of, or response to the individual control-codes is not prescribed by the caret notation. The notation is often used to describe keyboard shortcuts even though the control character is not actually used (as in "type ^X to cut the text"). Often a control character can be typed on a keyboard by holding down the Ctrl and typing the character shown after the caret. For the control-codes outside of the range 1–26, the notation extends to the adjacent, non-alphabetic ASCII characters.

The notation assigns ^A to control-code 1, sequentially through the alphabet to ^Z assigned to control-code 26 (0x1A).