The IBM System/4 Pi is a family of avionics computers used, in various versions, on the F-15 Eagle fighter, E-3 Sentry AWACS, Harpoon Missile, NASA's Skylab, MOL, and the Space Shuttle, as well as other aircraft.

4Pi may refer to: IBM System/4 Pi, a family of avionics computers; 4Pi microscope, a microscope that uses interference and fluorescence computers; 4×π = 12.56637..., the solid angle of a complete sphere measured in steradians; Hermetic detector (also called a 4π detector)

The IBM Federal Systems Division has developed a family of militarized, general purpose, digital computers called System/ 4 Pi. The name 4 Pi is derived from the number of steradians in a sphere, symbolizing the capability of these computers to address the entire spectrum of …

2013年1月9日 · ibm :: 4pi :: Technical Description of IBM System 4 Pi Computers 1967. From the bitsavers.org collection, a scanned-in computer-related document.

IBM has built the 4 Pi machines with integrated ci rcuits, but the logic organization can be easily implemented with large functional arrays when

It reviews and assesses current design practices, and from them establishes firm guidance for achieving greater consistency in design, increased reliability in the end product, and greater efficiency in the design effort.

2017年11月17日 · ibm :: 4pi :: 4PI EP Engineering Specification Nov1966 Addeddate 2017-11-17 05:42:35 Coverleaf 0 Identifier bitsavers_ibm4pi4PIEcationNov1966_12400348 Identifier-ark ark:/13960/t2c88n444 Ocr ABBYY FineReader 11.0 (Extended OCR) Ppi 300 Scanner Internet Archive Python library 1.5.0. plus-circle Add Review.

2022年9月3日 · From the bitsavers.org collection, a scanned-in computer-related document.

The IBM System/4 Pi is a family of radiation hardened avionics computers used, in various versions, on the B-52 Stratofortress bomber, the F-15 Eagle fighter, E-3 Sentry, NASA's Skylab, MOL, and the Space Shuttle, as well as other aircraft. It descends from the System/360 mainframe family of computers.

The IBM System/4 Pi is a family of avionics computers used, in various versions, on the F-15 Eagle fighter, E-3 Sentry, AWACS, Harpoon Missile, NASA's Skylab, MOL, and the Space Shuttle, as well as other aircraft.