ᶺ (Bar Code)
ᶺ (Bar code)   ᶺ§ҪѺèԹҧѹҹͫ緷 ֧ѡ "" ͡Թ ѹ
ǡѺͧҹԴдǡǴ ҹҡ ҧԴԹ ԴԹҧǴ ѡҹ§ҹٴҹҺԹԴԹ ǡѺҤԹҡѺͧԴԹҧ ԴҴҤԹԴ óͧԴҤԹŧԹء дǡ¹ŧҤԹաҧ˹
աҧͧ ٹ¡ͧʴѳ Ѩغѹ¡ѵѵͧҹͧ;ʴѳѧ֧ 100 繵 աС˹ǴѧдѺ к¡֧ҧ ͹к¡ ҧŧ͹ ҡǹҧ к¡ҹ öҧ´ ¡
00-09 Ѱԡ,
30-37
40-43 ѹѹ
49
50 ѧ
54
57
60 ҿԡ
64 ԹŹ
70
73
76
80-83 Ե
84
87 Ź
90-91
93-94 , ǫŹ
EAN/UPC Ţҧ
Ѩغѹ ҷҧҡء ͡ѵҧѵѵ (Automatic Identification) ׺ͧҡ෤ԤػóѺ recognize Ժѵҧ͹ ԴѺ Identification Ҿ§ѧͧѺاѹաҡ

ѡҹ

Ѻҹѡ ҧз͹ҡ״ ѧҹ١Ҵʧ١͡ҡҹз͹ѺѺ ѹ ʧз͹Ѻ١Ѵŧѭҳ Photodiode Դҹ ͧСͺӤѭͧҹ Ҵͧʧ͡ ͧѹѺ´ (resolution) ͧ Ҵͧѹͧ˭ҧͧش ҧԺѵشʧҴٹҧҳ 0.2 .
ǹӤѭաǹ˹ͧʧ 鹡Ѻҹ ʧԹô (Infrared) ҳ 0.95 ͹ (micron) Ѻҹ ʧ 0.65 ֧ 0.7 ͹ ѺҹԹͧ

ѡɳͧ

͸Ժѡɳͧ ͧ á Դ NRZ (Not Return to Zero) ԴŪѹ (Modulation) ҧ ó NRZ ѡдѺͨԤ (logic) ͧ¹дѺѭҳ Ţ 0 öŢ 0 Դѹ ͧѺѹ óẺŪѹҧ ˹ 1 ᶺҧ 0 ᶺ᤺ ѧŢͧ͹ѹԴѹ ֧ͧ¹" ҧ Ţ 0 ͧԴѹͧ ͧԴѹ Ţ 1 ˹ Ţ 0 ͧͧ ѧѡ¡ԴŢѹҧͧдѺ (᤺/ҧ)
ͧٴѹ Դͧͧ (Discrete) Դͧáͧҧ (ºѺä) ҧѡ ѧԴԹҡ ººԹҡ ֧˹ͧ ѹҡѺ ӹǹѡ˹˹ ( .) ˹çѺҧͧ ԴҧԴѡǺ (control character) ͧҧѡ
Ѻ˹٧ ҧͧ 0.009 (0.23 .) ˹ͧѡ٧ 8 ѡ Ѻ˹Ҵҧ ҧͧҧ 0.009 ֧ 0.020 (0.23 . ֧ 0.50 .) ˹ҧ 4 ֧ 8 ѡ شѺó˹ 4 ѡ

ҹ

ѺͧѺ͹ҹ ´, ҧͧ (Contrast) óͧ ´֧ մöͧҹҹش ѧ ѺҴͧشʧҹѺҧͧ Ѵҡ C ҡѺ ѧҹз͹ҡҧ ź ѧҹз͹ҡ״ ѧҹз͹ҡҧ C 0.7 شóͧ ѡԴҡͧͧ ҨԴԴͧ, ҧͧ͹ Ѵ ֧ͧͧ͡Ѻҹ

ҡͧ

͡ҡ ѧѡɳҧѹա Ţ Ţѡ ͧ¹ ͡Ѻѡɳҹ Ԩó͡ҡشѡö ҡ ͧ ״ҹ ҹҹó ҧѹѨغѹ UPC (Universal Product Code), EAN (European Artich number), Codebar, "2 5" 39
EAN/UPC
        EAN/UPC Ţ˹СͺŢ 8 13 Ҵ 13 ѹҡش ᶺŧ 101 Ţ 13 ѡ١ǹ ǹáСͺŢ 2 ͡ ǹͧСͺŢ 4 ͡Եǹش ¡ҡǹͧ 01010 ͡Թ ᶺ 7 ᶺ ҧѹ 1 0 EAN/UPC ѺԹػ ѹš

С "2 5"

1
2
3
4
5
6
7
8
9
0
1      0      0      0      1
0      1      0      0      1
1      1      0      0      0
0      0      1      0      1
1      0      1      0      0
0      1      1      0      0
0      0      0      1      1
1      0      0      1      0
0      1      0      1      0
0      0      1      1      0
  Code Start
  Code Stop
 1      1      0 
 1      0      1 
2 5 صˡ

        Ѻ "2 5" Դá١ҧԨѡɳ ˹СͺͧӹǹѡɳԴҡ ѹ С "2 5 صˡ", "2 5 ԡ" "2 5 ʹá" Ţ
        "2 5 صˡ" ᶺ˹ҧ 1 ֧ 32 ԴͧСͺͧ 0 ҧ 1 "2 5 صˡ" µ Ҵ͹ҹ ѧ֧ѡǺ Դѹçҹصˡҧ ͧԹ ͧ¡
        Ѻ "2 5 ԡ" ᶺǹͧСͺͧ ˹Сͺͧ ҧͧŧ 10000 ǹ˹ͧ ԴԹԴá ҡ 28 ֧ 33 繵 ҹҹԴҴŴŧ
        "2 5 ʹá" ҨʹشС ԴǹͧСͺͧǡѺ "2 5 ԡ" ͧҧ ѡɳ "ʹá" ѡá١ "2 5 صˡ" Сͺ ѡ١ "2 5 صˡ" Сͺ ᶺѹ ͧҧ١áѺѺᶺҡѡá ᶺͧ "2 5 ʹá" 0000 ŧ 100 ºѺ "2 5 صˡ" Դ˹ҡҡ 36 ֧ 42 繵 ҡ 10 ֧ 12 繵 ºѺ "2 5 ԡ" ѹ֧ѹҧǧصˡ

39
        39 Դáѡ Ѩغѹҡ 39 128 39 Сͺѭѡɳ 43 ( 39 ) ѭ 26 Ţ 10 ѡ 39 ö "3 9) ˹Сͺ 9 Сͺ ҧ աͧ᤺ ˹˹֧ѡ Check digit ѧ 39 ֧͹ҹ٧ ͧ Դѹҡصˡ礷Ԥ ¡Դǧ

Codabar
        Codabar ѺŢͧҡ 1 ֧ 32 ҤʹͧѰԡ صˡҧᾷ ˹Сͺ 7 Է 4 ᶺ 3 ᶺ᷹ 0 ҧ᷹ 1

С
        ͡˹ҡ ѧ ö §ǡá 128, "2 7" 11
        128 ҡ ѹСͺشѡ 128 ͧʡ (ASCII) Դͧ͹ҹ٧ҡ ǹ "2 7" ԴŪѹ ҧѺŢѡ 6 $-: /. + ҧͧԴ١˹§Ҵ ֧ 18 Ҵ͡ ö˹֧ 11 ѡ Ѻ͹֧ѹҡѡ ش 11 Ţѹ ѡɳ§Ѻ "2 5 ԡ" ˹Сͺ 3 ᶺ 2 ᶺ
        11 ˹٧ҡ ͧҡ͡Ѵǹͧҧش Ѻ͹Ẻ "2 5"


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