Card image
From Infogalactic: the planetary knowledge core
Card image is an archaic term for a character string, usually 80 characters in length, that was, or could be, contained on a single punched card. IBM cards were 80 characters in length. UNIVAC cards were 90 characters in length. A punched card typically held multiple data fields, some numeric, some alphabetic. Many data formats, such as the FITS image file format, still use card images as basic building blocks—even though punched cards are now mostly obsolete.
External links
- RFC 678: Standard File Formats. The card image format is defined in the section "Standard Formats" of this RFC.
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