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In Computers

Hex on left, Binary on right 0 = 0000 1 = 0001 2 = 0010 3 = 0011 4 = 0100 5 = 0101 6 = 0110 7 = 0111 8 = 1000 9 = 1001 A = 1010 B = 1011 C = 1100 D… = 1101 E = 1110 F = 1111 (MORE)

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Hexadecimal is used whenever we want to notate a binary value because each hex digit maps directly with each 4 bit nybble (half a byte). A 64-bit binary value can therefore be… reduced to a more concise 16-digit hex value. (MORE)

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In Science

Normally, numbers are based on the base 10 system. This means there are ten symbols (numbers): 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. For numbers greater than 9, we use a com…bination of symbols. The first digit specifies how many ones, the second digit (to the left) specifies how many tens, and so on. In the hexadecimal system, there are sixteen symbols, because it is a base 16 system. The symbols: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, and f. For numbers greater than f (equivalent to 15 in base 10), a combination of symbols is used. The first digit specifies how many ones, but the second digit (to the left) specifies how many sixteens. Ten in the hexadecimal system means one sixteen and no ones. In base 10, it would just be 16. In HTML and CSS, hexadecimals are used to define colors and to insert symbols. (MORE)

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In Computers

decimal-hexadecimal 0-0 1-1 2-2 3-3 4-4 5-5 6-6 7-7 8-8 9-9 10-A 11-B 12-C 13-D 14-E 15-F So your answer is 'B'.

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Computer engineers use to use the hexadecimal code to program computers, or the base 16. Hexadecimal numbers use the digits 0 through 9, plus the letters A through F to re…present the digits 10 through 15. (MORE)

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In Science

"The hexadecimal code of ABCDEF" is rather difficult to make. If you want the DECIMAL code for the HEXADECIMAL numbers A, B, C, D, E and F, then you get this explanation: He…xadecimal means 16 and if you are counting hexadecimal and you will start to count from 0 to 9 normally. Then you get A for 10, B for 11, C for 12 D for 13 E for 14 and F for 15. (MORE)

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In Technology

The word hexadecimal is composed of hexa-, derived from the Greek έξ (hex) for "six", and -decimal, derived from the Latin for "tenth". - from wiki hexadecimal (also called …base 16 or hex) is a method of representing numbers using 16 unique symbols. The decimal nurerical system uses ten symbols 012345678 and 9 to represent numbers. Hexadecimal adds ABCDE and F to these to give 16 symbols with A representing ten and so on. (MORE)

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If you mean using the programming language, it'll do it automagically, for example, if you have in C: int a = 0x389; int b = 0x7A8; int c = a + b; then c will contain …0xB31 (in hexadecimal) - to display the value you would use: printf("a + b = %X + %X = %X = c\\n", a, b, c); You can also convert to hexadecimal (for display) directly, for example: printf("0x%x + 0x%x = 0x%x\\n", 127, 207, 127 + 207); which will display the sum in hex: 0x7f + 0xcf = 0x14e Hex is only a convenient way to display the numbers to humans. If you mean manually, yourself, then exactly the same way that you add in any other base. Start at the right hand end, add the digits together and when it becomes greater than the highest digit that can be stored in a single digit, subtract multiples of the base, write the remaining digit in the answer and the number of multiples of the base subtracted is added as a carry to the next digit sum to the left. With hexadecimal, just remember that: 0x8 + 1 = 0x9 0x9 + 1 = 0xA 0xA + 1 = 0xB 0xB + 1 = 0xC 0xC + 1 = 0xD 0xD + 1 = 0xE 0xE + 1 = 0xF 0xF + 1 = 0x10 A trick to thinking in hexadecimal is to remember that 8 is 1/2 of 16 and think of the digits above 7 as (8 + [0-7]), that is: 0x8 = (8 + 0), 0x9 = (8 + 1), 0xA = (8 + 2), 0xB = (8 + 3) 0xC = (8 + 4), 0xD = (8 + 5), 0xE = (8 + 6), 0xF = (8 + 7) and remembering that 0x8 + 0x8 = 0x10. Example: 0x389 + 0x7A8 = 0xB31 0x9 + 0x8 (= 8 + 1 + 8 = 0x10 + 1) = 0x11 = 0x1 carry 1 0x8 + 0xA + carry 1 (= 8 + 8 + 2 + 1 = 0x10 + 3) = 0x13 = 0x3 carry 1 0x3 + 0x7 + carry 1 (= 8 + 3) = 0xB If you can't think using the fifteen single digits, work in decimal remembering the conversions: 0xA = 10 0xB = 11 0xC = 12 0xD = 13 0xE = 14 0xF = 15 For example the second addition above becomes: 0x8 + 0xA + carry 1 = 8 + 10 + 1 = 19 (= 16 + 3 = 0x10 + 3) = 0x13 = 0x3 carry 1 (MORE)

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In Numbers

hexadecimal numbers are the a positional numeral system with a radix, or base, of 16.16 distinct symbols are used in the hexadecimal numbers.

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In Science

That depends what you want to "do" with the hexadecimals - add, multiply, compare, etc. The first thing you would need to do is learn how it is defined.