This standard specifies the representation of the GB 1988 seven-bit coded character set and its eight-bit extension on punched paper cards. It is suitable for 80-column by 12-row punched paper cards for information exchange between data processing systems. This standard does not specify any redundant check codes and error control techniques. GB/T 3236-1982 Method for the representation of seven-bit and eight-bit coded character sets on punched paper cards for information processing exchange GB/T3236-1982 standard download decompression password: www.bzxz.net

1 Introduction
National Standard of the People's Republic of China
Implementation of 7-bit and 8-bit coded character sets for Information processing interchange on punched paper cards UDCB81.3.04:681
GB3236—82
This standard specifies the representation of the GB1988 7-bit coded character set and its 8-bit extension on punched paper cards. It is applicable to 180-column 12-row punched paper cards for information exchange between data processing systems. This standard does not specify any redundant check codes and error control techniques. This standard is formulated with reference to the International Organization for Standardization standard ISO6586-1980 "Data processing—Implementation of ISO 7-bit and 8-bit coded character sets on punched paper cards". 2 Related standards
This standard is related to the following national standards:
GB1988-80 "Seven-bit coded character set for information processing exchange". GB2311-80 "Extension method of seven-bit coded character set for information processing exchange". GB 3908-83 "Dimensions of 80-column punched paper sheets for information processing". 3 Punched cards
3.1 The punched card referred to in this standard is an information exchange file. In this file, the characters are listed in a row, and each has 12 positions available for punching. www.bzxz.net
3.2 For the 12 punch positions in each column of the card (as shown in the figure below), starting from the top edge, the positions are coded as follows: 12, 11, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. The hole structure is composed of 12 valid positions in a given column on the card. The method of punching is as follows: a. Positions 12, 11, 0, 9, and 8 can be punched in any combination, 32 (i.e., 25) combinations. b. Positions 1, 2, 3, 4, 5, 6, and 7 can only have one hole punched, including the case where no hole is punched in the seven positions! There are 8 possibilities.
This method can provide 256 (i.e., 32×8) hole position structures. National Bureau of Standards 1982-11-16 Issued
1983-0801 Implementation
Implementation method
4.1 Implementation method of eight-bit coded character set
GB $236—82
Punching position
10111213
Hole position layout diagram
Each corresponding hole position structure of the 256 eight-bit groups is shown in the following table. The columns and rows of the table are numbered with binary and decimal numbers. Each hole structure is identified by its column and row number (such as 06/11) and the corresponding bit group (such as 01101011, with the most significant bit on the left). 4.2 Implementation of the seven-bit coded character set The hole structure shown in the left half of the table (i.e., columns 00 to 07) is applicable to 128 seven-bit groups. The seven-bit group is obtained by omitting the most significant bit, i.e., the eighth bit (b.), from the eight-bit group. GB 3236—82
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GB 3236-82
Appendix A
(reference)
For ease of reference, the correspondence between 256 octet groups and 256 hole structures is shown in the following table in another way. The method is as follows: the center and right end of each column and row are marked with the hole structure of the card. a.
The content recorded in the following table indicates the column/row position of the octet code table. Bit group corresponding to the hole structure of the card
Additional notes:
This standard is proposed by the Ministry of Electronics Industry.
This standard was drafted by the Institute of Chemical Engineering of the Ministry of Electronics Industry. Figure
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