The roots of IBM mainframes, IT run through the System/360 IBM IT can trace its roots back to arguably the most important computer introduction made 52 years ago today was the dayThe Model 65 replaced two models announced in 1964 but never built The first Model 65 went to MIT A version for timesharing, called the Model 67, was the first 360 to use virtual memoryModel 30 suggested the use of an extra control store on the micro–programmed control unit to allow the Model 30 to execute IBM 1401 instructions in native mode R_62 Stuart Tucker and Larry Moss led the effort to provide the ability on the System/360 Model 30 to execute native mode software for both the IBM 1401 and IBM 700 series Moss
Ibm System 360 Wikipedia
