# hex

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Related to hexidecimal numbers: hexadecimal number system

## hex,

witchcraft or one who works it. The word is of German origin, and beliefs connected with it spread from Europe to the United States, especially to the Pennsylvania Dutch country. The hex can be worked by either sex, but more commonly by a man, usually an amateur or professional hex "doctor." Such a person is thought to be able to control the forces of nature, cure sickness, and thwart the intentions of evildoers by means of magic formulas handed down from the Middle Ages and from Romani (Gypsy) practitioners. The colorful, geometric hex signs found on Pennsylvania Dutch barns are meant to protect the animals within from malicious curses, spells, and the evil eyeevil eye,
principally Sicilian and Mesoamerican superstition, although it is known in other cultures. According to the Native American version, a person who stares fixedly at a pregnant woman or a child or who is too admiring or physically affectionate with children may produce
.

## HEX

On drawings, abbr. for “hexagon” or “hexagonal.”

## hex

b. (as modifier): hex code

(1)

## hex

(2)
A 6-pack of anything (compare quad). Neither usage has anything to do with magic or black art, though the pun is appreciated and occasionally used by hackers. True story: As a joke, some hackers once offered some surplus ICs for sale to be worn as protective amulets against hostile magic. The chips were, of course, hex inverters.

## hex

(character)
The hash character, used to introduce hexadecimal constants in some assembly languages.

## hex

(HEXadecimal) Hexadecimal means 16. The base 16 numbering system is used as a shorthand for representing binary numbers. Each half byte (four bits) is assigned a hex digit as shown in the following chart with its decimal and binary equivalents. Hex values are identified with an "h" or dollar sign, thus \$3E0, 3E0h and 3E0H all stand for the hex humber 3E0. See hex chart and hex editor.

```Base              Base16  10  2         16  10  2Hex Dec Binary    Hex Dec Binary
0   0   0000      A   10  1010
1   1   0001      B   11  1011
2   2   0010      C   12  1100
3   3   0011      D   13  1101
4   4   0100      E   14  1110
5   5   0101      F   15  1111
6   6   0110
7   7   0111
8   8   1000
9   9   1001
```

How to Interpret the Hex As decimal digits increment by 10, hex digits increment by 16. Two hex digits make up one byte; for example, A7 is equivalent to one byte containing the binary number 10100111, or 167 in decimal. A is 10, thus 160 (10x16) plus 7 (7x1). The hex number A000 (pronounced "A thousand") is 40,960 in decimal (10x4096).
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