(Main functions: Hexadecimal conversion: 10& amp; lt;--& amp; amp; gt; 2,8,16 and 2& amp; lt;--& amp; amp; gt; 16 mutual conversion, support decimals (suitable for computer grade examination basic questions), in which decimal support negative numbers Character conversion: characters are converted to decimal (ASCII) and can be offset from ASCII, and hexadecimal and its inverse operation. The double byte characters (such as Chinese characters) converted to hexadecimal include positive number, negative number and byte separation. It supports the addition of pre and post characters, and can easily combine UTF-8 encoding and other characters Query of keyboard code: the corresponding codes of keyboard keys are displayed in 10 and hexadecimal, which can be used as a query tool for programming Code conversion: character and Base64 code can be converted to each other, and the key can be customized to achieve simple character encryption Auxiliary subnet Division: i.e. the conversion between decimal and binary IP addresses, as well as the binary and, or, inversion operation additional tools: ASCII table: ASCII table of 0-127, represented by 2, 8, 10, 16 and HTML respectively Simplified Calculator: four operations, power, square, factorial. Most functions support direct calculation through keyboard keys Character statistics and replacement: character replacement, string Statistics (numbers, letters, double bytes, spaces) part of the function detailed operation methods and Essentials: 1 In the character conversion interface, you can directly drag the mouse to select the character to be converted even if it is "highlighted". When released, the ASCII value and its hexadecimal value will be directly displayed in the prompt character and the status bar below. It is convenient to view a specific character when converting multiple characters! 2. about hexadecimal conversion: negative numbers are supported when hexadecimal 10 is converted to other hexadecimals, but it should be noted that negative numbers and decimals should not be operated at the same time. For example, the operation of -10.5 is not allowed. The reason is that I don't know how to convert negative decimals^_^ 3. about the offset from character to ASCII code: for example, the ASCII value of AB conversion is 6566. When the offset is increased by 32, the ASCII value becomes 9798. Note: this function does not support the accumulation operation 4 Character to ASCII (i.e. decimal system of characters): the characters are converted into ASCII code. If the characters are double bytes (such as Chinese characters), you can select three representation methods: positive number, negative number or byte separation, such as Chinese characters & amp; quot; Medium & amp; quot; Positive number: 54992 negative number: -10544 byte separation: 214208 note: if Chinese characters are included and negative number or byte separation representation is selected, please do not use & amp; quot;-& amp; amp; quot; Or & amp; quot;,& amp; amp; quot; To be used as pre and post characters to avoid errors caused by reverse operation. 5 ASCII to character: This is the reverse operation above. At this time, as long as the corresponding ASCII code is input, it can be converted to character description: 1 Since this program has the judgment function, you do not need to select the Chinese character expression, that is, you can convert it into Chinese characters by entering 54992 or -10544 or 214208 & amp; quot; Medium & amp; quot; 2. if the ASCII code to be reversed contains separation, you must enter the corresponding characters in the pre and post character boxes, for example:%-15133;%- 17725； If you want to convert to characters in reverse, you must fill in% with the leading character and% with the trailing character;%- 15133%-17725 the leading character is filled with% and the trailing character is filled with spaces. Note that the corresponding value to be converted to characters must have a space character. For example:%-15133%-17725 cannot be converted, but it should be changed to%-15133%-17725 as above, that is, the space character is at least (by default) converted to hexadecimal and its reverse operation is basically the same as the above description: for example, the UTF-8 value 6 can be obtained by adding% to the leading character Both "hexadecimal conversion" and "character conversion" have the operation of converting to hexadecimal. What is the difference? Answer: "base conversion" can only convert numeric type, while "character conversion" converts the string bit by bit as characters! 7. use of subnet partition assistance: here is an excerpt from an article (in the hacker x file) on how to use the subnet mask to obtain the network and host addresses: as follows: how to use the subnet mask to obtain the network and host addresses (1) convert the IP address and subnet mask into binary system; (2) The binary IP address and subnet mask are "and" operated, and the network address is obtained by converting the answer to decimal; (3) Set the subnet mask in binary form to "negative"; (4) The "and" operation is performed on the subnet mask and IP address after the "inverse" is taken, and the host address is obtained by converting the answer to decimal. Tip: press the space bar when filling in the IP address to skip to the next section! 8. about the simple calculator: it supports the direct operation of the keyboard, which can avoid the use of the mouse for four operations. This data contains the following attachments:
ASCII and hexadecimal conversion)
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