Mainframe computing is having a moment — again. Nearly 60 years after the first IBM System/360 debuted as a mainframe platform, it continues to evolve in ways that defy expectations, powering critical ...

The first computer I ever physically saw — I think — was an IBM System/3. You might not remember them. They were business computers for businesses that couldn’t justify a big mainframe. They were ...

A minicomputer from IBM. Introduced in 1983, earlier System/34 applications had to be recompiled to run in the System/36. The typical system supported from a handful to a couple dozen terminals.