IBM 1620 is a historical assembly language created in 1959.

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Example code from Wikipedia:

C F 8 4 2 1
1 0 1 0  –  Record Mark (right most end of record, prints as a double dagger symbol, ‡)
1 1 0 0  –  Numeric Blank (blank for punched card output formatting)
1 1 1 1  –  Group Mark (right most end of a group of records for disk I/O)
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Last updated February 11th, 2019