Encyclopedia: OS4...
Encyclopedia : O : OS : OS4 (1 articles)
OS/400
OS/400 is an operating system used on IBM's line of AS/400 (now called System i5) computers. OS/400 and AS/400 were introduced in 1988. OS/400 is now called i5/OS and the latest version is V5R4. OS/400 and i5/OS have built-in subsystems that provide some backward compatibility with earlier IBM gen..
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