GB/T 3909-1983 Graphic character dot shapes for information exchange

This standard specifies the shapes of 5×7, 7×7, 7×9, and 9×7 dot matrix graphic characters. It is applicable to general dot matrix printing equipment and display equipment. The preferred grid size specified in the standard is only applicable to printing equipment. GB/T 3909-1983 Dot matrix shapes of graphic characters for information exchange GB/T3909-1983 Standard download decompression password: www.bzxz.net

Scope of application
National Standard of the People's Republic of China
Matrix font of graphic characters for information interchange
UDC 681-3
GB3909—83
This standard specifies the shapes of 5×7, 7×7, 7×9, 9×7 dot-matrix graphic characters, which are applicable to general dot-matrix printing equipment and display equipment. The grid size meter preferred by the standard is applicable to printing equipment. Note: The character dot matrix in this standard is represented by horizontal first and then vertical. ② If the grid does not adopt the preferred size, it may cause difficulties for machine recognition. 2 Character types
Character types are in accordance with GB1988-80 "Seven-bit coded character set for information processing interchange", with a total of 98 characters. 2.110 numbers
0123456789
2.2:26 handwritten Latin letters
ABCDEFGHIJKLM
NOPQRSTUVWXYZ
2.826 lowercase Latin letters
abcdefghijklm
2.436 other characters
3 dot matrix types
The dot matrix types are divided into 6 × 7,
4 Determination of character graphics
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7 × 7, 7 × 9~ 9 × 7. The graphics of each character are determined by a number of small dots on a number of grids. 4.1 Grid
The grid is composed of several vertical lines and several horizontal lines, and the intersection is defined as the center of the dot. The grid only locates the dots that constitute the character graphics. The grid diagram is as follows.
GB3909--83
The grid size of each dot matrix is ​​preferably as follows: Dot
Grid size
(7×1)
(9×7)
The dot is a colored area centered on the intersection of the grid. They are circles with a diameter of 0.4mm or polygons of equal area. 5 Character shape
The character shape is as specified in the following dot matrix glyph diagram, with a ratio of 10:1GB3909—83
(7×7)
(9×7)
(7×9)
GB 3909--83
GB3909—83
(9×7)
(7×9)
GB 390983
(5×7)
GB3909-83
(7×9)
GB3909--83
(5×7)
(7×7)
(9×7)
GB 390983
(7×7)
(9×7)
(7×9)
GB3909--83
(5×7)
(7×7)
(9×7)
(7×9)
GB 390983
(5×7)
(7×7)
GB3909—83
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(7×7)
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