Log-in to bookmark & organize content - it's free! Bill Worthington, a former IBM 1401 programmer and volunteer at the Computer History Museum, showed a fully functional 1401 system and explained its ...

Ever wondered how to fix a system built in the days when winding memory by hand was the next big life skill? Share on Facebook (opens in a new window) Share on X (opens in a new window) Share on ...

2. IBM Customer Engineers Memorandum, - 1401 Engineering Changes - followed by numerous other documents, oat least one dated as late as 1964, mainly concerned with engineering changes for the IBM 1401 ...

Ars Technica has been separating the signal from the noise for over 25 years. With our unique combination of technical savvy and wide-ranging interest in the technological arts and sciences, Ars is ...