Old mainframe computers are interesting ... His latest installment is an article describing the strange implementation of the IBM 1401’s qui-binary arithmetic. Full disclosure: It has not ...

[Ken Shirriff] is apparently very cool, and when he found out the Computer History Museum had a working IBM 1401 mainframe, he decided to write a program. Not just any program, mind you ...

Every two to three years, IBM refreshes its mainframe lineup with a new model that brings improved performance and expanded ...

The IBM z17 mainframe can process 450 billion AI inferences a day, a significant step up from what its predecessor could.