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#business-computing

3 posts

Tech HistoryDeep Dive October 3, 2026 8 min read

COBOL-60: The Committee Language Built for Portable Business Records

How CODASYL's 1960 specification made business records, decimal data, and file processing a shared language across unlike computers.

#cobol#codasyl#business-computing

Tech HistoryDeep Dive October 3, 2026 8 min read

How IBM's 1401 paired transistorized processing, variable-length records, card and tape I/O, and a lower entry cost to broaden commercial computing.

#ibm-1401#mainframes#business-computing

Tech HistoryDeep Dive October 3, 2026 9 min read

The 305 RAMAC paired a business computer with the IBM 350 disk, replacing hours of sequential search with indexed magnetic access.

#ibm-305#ramac#disk-storage