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ASCII    音標拼音: ['æski]
美國信息交換標準代碼 ; ( AMERICAN STANDARD CODE FOR
INFORMATI-ON INTERCHANGE 的縮寫)

美國資訊交換標准代碼 ( AMERICAN STANDARD CODE FOR INFORMATI-ON INTERCHANGE 的縮寫)

ASCII
n 1: (computer science) a code for information exchange between
computers made by different companies; a string of 7 binary
digits represents each character; used in most
microcomputers [synonym: {American Standard Code for
Information Interchange}, {ASCII}]

ASCII \ASCII\ n. [Acronym: American Standard Code for
Information Interchange.](Computers)
1. the American Standard Code for Information Interchange, a
code consisting of a set of 128 7-bit combinations used in
digital computers internally, for display purposes, and
for exchanging data between computers. It is very widely
used, but because of the limited number of characters
encoded must be supplemented or replaced by other codes
for encoding special symbols or words in languages other
than English. Also used attributively; -- as, an ASCII
file.

Syn: American Standard Code for Information Interchange.
[PJC]


Ascii \As"ci*i\, Ascians \As"cians\, n. pl. [L. ascii, pl. of
ascius, Gr. ? without shadow; 'a priv. ? shadow.]
Persons who, at certain times of the year, have no shadow at
noon; -- applied to the inhabitants of the torrid zone, who
have, twice a year, a vertical sun.
[1913 Webster]

{American Standard Code for Information Interchange}

American Standard Code of Information Interchange

ASCII: /as´kee/, n. [originally an acronym (American Standard Code for Information
Interchange) but now merely conventional] The predominant character set
encoding of present-day computers. The standard version uses 7 bits for
each character, whereas most earlier codes (including early drafts of ASCII
prior to June 1961) used fewer. This change allowed the inclusion of
lowercase lettersa major winbut it
did not provide for accented letters or any other letterforms not used in
English (such as the German sharp-S ß. or the ae-ligature æ
which is a letter in, for example, Norwegian). It could be worse, though.
It could be much worse. See EBCDIC to understand
how. A history of ASCII and its ancestors is at http://www.wps.com/texts/codes/index.html.Computers are much pickier and less flexible about spelling than
humans; thus, hackers need to be very precise when talking about
characters, and have developed a considerable amount of verbal shorthand
for them. Every character has one or more namessome formal, some
concise, some silly. Common jargon names for ASCII characters are
collected here. See also individual entries for
bang, excl,
open, ques,
semi, shriek,
splat, twiddle, and
Yu-Shiang Whole Fish.This list derives from revision 2.3 of the Usenet ASCII pronunciation
guide. Single characters are listed in ASCII order; character pairs are
sorted in by first member. For each character, common names are given in
rough order of popularity, followed by names that are reported but rarely
seen; official ANSI/CCITT names are surrounded by brokets: <>.
Square brackets mark the particularly silly names introduced by
INTERCAL. The abbreviationsl/rand
o/cstand for left/right andopen/close
respectively. Ordinary parentheticals provide some usage
information.
!Common:
bang

; pling; excl; not; shriek; ball-bat; <exclamation mark>. Rare:
factorial; exclam; smash; cuss; boing; yell; wow; hey; wham; eureka;
[spark-spot]; soldier, control.
"Common: double quote; quote. Rare: literal mark;
double-glitch; snakebite; <quotation marks>; <dieresis>;
dirk; [rabbit-ears]; double prime.
#Common: number sign; pound; pound sign; hash; sharp;
crunch

; hex; [mesh]. Rare: grid; cross­hatch; oc­to­thorpe;
flash; <square>, pig-pen; tic­tac­toe; scratchmark;
thud; thump;
splat

.
$Common: dollar; <dollar sign>. Rare: currency symbol;
buck; cash; bling; string (from BASIC); escape (when used as the echo of
ASCII ESC); ding; cache; [big money].
%Common: percent; <percent sign>; mod; grapes. Rare:
[double-oh-seven].
&Common: <ampersand>; amp; amper; and, and sign. Rare:
address (from C); reference (from C); andpersand; bitand;
background (from
sh(1)

); pretzel. [INTERCAL called this
ampersand

; what could be sillier?]
'Common: single quote; quote; <apostrophe>. Rare: prime;
glitch; tick; irk; pop; [spark]; <closing single quotation
mark>; <acute accent>.
( )Common: l/r paren; l/r parenthesis; left/right;
o­pen­/­close; par­en/the­sis; o/c paren;
o/c par­en­the­sis; l/r paren­the­sis; l/r
ba­na­na. Rare: so/al­ready; lparen/rparen;
<opening/closing parenthesis>; o/c round bracket, l/r round
bracket, [wax/wane];
par­en­this­ey/un­par­en­this­ey;
l/r ear.
*Common: star; [
splat

]; <asterisk>. Rare: wildcard; gear; dingle; mult; spider;
aster; times; twinkle; glob (see
glob

);
Nathan Hale

.
Common: <plus>; add. Rare: cross;
[intersection].
,Common: <comma>. Rare: <cedilla>; [tail].
-Common: dash; <hyphen>; <minus>. Rare: [worm];
option; dak; bithorpe.
.Common: dot; point; <period>; <decimal point>.
Rare: radix point; full stop; [spot].
/Common: slash; stroke; <slant>; forward slash. Rare:
diagonal; solidus; over; slak; virgule; [slat].
:Common: <colon>. Rare: dots; [two-spot].
;Common: <semicolon>; semi. Rare: weenie; [hybrid],
pit-thwong.
< >Common: <less/great­er than>; bra/ket; l/r angle;
l/r angle bracket; l/r broket. Rare: from/{into, towards}; read
from/write to; suck/blow; comes-from/gozinta; in/out; crunch/zap (all
from UNIX); tic/tac; [angle/right angle].
=Common: <equals>; gets; takes. Rare: quadrathorpe;
[half-mesh].
?Common: query; <question mark>;
ques

. Rare: quiz; whatmark; [what]; wildchar; huh; hook; buttonhook;
hunchback.
@Common: at sign; at; strudel. Rare: each; vortex; whorl;
[whirlpool]; cyclone; snail; ape; cat; rose; cabbage; <commercial
at>.
VRare: [book].
[ ]Common: l/r square bracket; l/r bracket; <opening/closing
brack­et>; brack­et/un­brack­et. Rare:
square­/­un­square; [U turn/U turn back].
Common: backslash, hack, whack; escape (from C/UNIX); reverse
slash; slosh; backslant; backwhack. Rare: bash; <reverse
slant>; reversed virgule; [backslat].
^Common: hat; control; uparrow; caret; <circumflex>.
Rare: xor sign, chevron; [shark (or shark-fin)]; to the (‘to
the power of’); fang; pointer (in Pascal).
_Common: <underline>; underscore; underbar; under. Rare:
score; backarrow; skid; [flatworm].
`Common: backquote; left quote; left single quote; open quote;
<grave accent>; grave. Rare: backprime; [backspark];
unapostrophe; birk; blugle; back tick; back glitch; push; <opening
single quotation mark>; quasiquote.
{ }Common: o/c brace; l/r brace; l/r squiggly; l/r squiggly
bracket/brace; l/r curly bracket/brace; <opening/closing
brace>. Rare: brace/unbrace; curly/un­curly; leftit/rytit;
l/r squirrelly; [embrace/bracelet]. A balanced pair of these may be
called
curlies

.
|Common: bar; or; or-bar; v-bar; pipe; vertical bar. Rare:
<vertical line>; gozinta; thru; pipesinta (last three from
UNIX); [spike].
~Common: <tilde>; squiggle;
twiddle

; not. Rare: approx; wiggle; swung dash; enyay; [sqiggle
(sic)].
The pronunciation of # aspoundis
common in the U.S. but a bad idea;
Commonwealth Hackish
has its own, rather more apposite use ofpound
sign’ (confusingly, on British keyboards the £ happens to
replace #; thus Britishers sometimes call
# on a U.S.-ASCII keyboardpound’,
compounding the American error). The U.S. usage derives from an
old-fashioned commercial practice of using a # suffix to
tag pound weights on bills of lading. The character is usually pronounced
hashoutside the U.S. There are more culture wars over the
correct pronunciation of this character than any other, which has led to
the ha ha only serious suggestion that it be
pronouncedshibboleth” (see Judges 12:6 in an Old Testament or
Tanakh).Theuparrowname for circumflex and
leftarrowname for underline are historical relics from
archaic ASCII (the 1963 version), which had these graphics in those
character positions rather than the modern punctuation characters.Theswung dashorapproximationsign
(∼) is not quite the same as tilde ~ in typeset material, but the ASCII
tilde serves for both (compare angle brackets).
Some other common usages cause odd overlaps. The
#, $, >, and
& characters, for example, are all pronounced
hexin different communities because various assemblers use
them as a prefix tag for hexadecimal constants (in particular,
# in many assembler-programming cultures,
$ in the 6502 world, > at Texas
Instruments, and & on the BBC Micro, Sinclair, and
some Z80 machines). See also splat.The inability of ASCII text to correctly represent any of the world's
other major languages makes the designers' choice of 7 bits look more and
more like a serious misfeature as the use of
international networks continues to increase (see
software rot).
Hardware and software from the U.S. still tends to
embody the assumption that ASCII is the universal character set and that
characters have 7 bits; this is a major irritant to people who want to use
a character set suited to their own languages. Perversely, though, efforts
to solve this problem by proliferatingnationalcharacter
sets produce an evolutionary pressure to use a smaller
subset common to all those in use.

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