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2. IBM System/370 - Wikipedia

   en.wikipedia.org/wiki/IBM_System/370

   e. The IBM System/370 ( S/370) is a range of IBM mainframe computers announced as the successors to the System/360 family on June 30, 1970. The series mostly [b] maintains backward compatibility with the S/360, allowing an easy migration path for customers; this, plus improved performance, were the dominant themes of the product announcement.

3. Instructions per second - Wikipedia

   en.wikipedia.org/wiki/Instructions_per_second

   Instructions per second (IPS) is a measure of a computer's processor speed. For complex instruction set computers (CISCs), different instructions take different amounts of time, so the value measured depends on the instruction mix; even for comparing processors in the same family the IPS measurement can be problematic.

4. IBM Enterprise Systems Architecture - Wikipedia

   en.wikipedia.org/wiki/IBM_Enterprise_Systems...

   IBM Enterprise Systems Architecture is an instruction set architecture introduced by IBM as ESA/370 in 1988. It is based on the IBM System/370-XA architecture.. It extended the dual-address-space mechanism introduced in later IBM System/370 models by adding a new mode in which general-purpose registers 1-15 are each associated with an access register referring to an address space, with ...

5. IBM System/370-XA - Wikipedia

   en.wikipedia.org/wiki/IBM_System/370-XA

   IBM documentation numbers the bits from high order to low order; the most significant (leftmost) bit is designated as bit number 0. IBM System/370-XA is an instruction set architecture introduced by IBM in 1983 with the IBM 308X processors. It extends the IBM System/370 architecture to support 31-bit virtual and physical addresses, and includes ...

6. IBM System/360 architecture - Wikipedia

   en.wikipedia.org/wiki/IBM_System/360_architecture

   The IBM System/360 architecture is the model independent architecture for the entire S/360 line of mainframe computers, including but not limited to the instruction set architecture. The elements of the architecture are documented in the IBM System/360 Principles of Operation [1] [2] and the IBM System/360 I/O Interface Channel to Control Unit ...

7. Reduced instruction set computer - Wikipedia

   en.wikipedia.org/wiki/Reduced_instruction_set...

   The Sun Microsystems UltraSPARC processor is a type of RISC microprocessor. In electronics and computer science, a reduced instruction set computer ( RISC) is a computer architecture designed to simplify the individual instructions given to the computer to accomplish tasks. Compared to the instructions given to a complex instruction set ...

8. IBM Personal Computer XT - Wikipedia

   en.wikipedia.org/wiki/IBM_Personal_Computer_XT

   IBM Personal Computer XT. The IBM Personal Computer XT (model 5160, often shortened to PC/XT) is the second computer in the IBM Personal Computer line, released on March 8, 1983. [ 1 ] Except for the addition of a built-in hard drive and extra expansion slots, it is very similar to the original IBM PC model 5150 from 1981.

9. OS/360 and successors - Wikipedia

   en.wikipedia.org/wiki/OS/360_and_successors

   OS/360, officially known as IBM System/360 Operating System, [1] [2] is a discontinued batch processing operating system developed by IBM for their then-new System/360 mainframe computer, announced in 1964; it was influenced by the earlier IBSYS/IBJOB and Input/Output Control System (IOCS) packages for the IBM 7090/7094 [citation needed] and even more so by the PR155 Operating System for the ...