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The IBM System/360 and the Use of Microcode

The IBM System/360 and the Use of Microcode

Harald Sack
On April 7, 1964, IBM introduced the IBM System/360, a rather successful family of mainframe computer systems, originally produced between 1965 and 1978 using microcode to implement the instruction set. It was the first family of computers designed to cover the complete range of applications, from small to large, both commercial and scientific. The design made a clear distinction between architecture and implementation. Also if you are not a computer scientist, you might…
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computer science
John Cocke and the RISC Architecture

John Cocke and the RISC Architecture

Harald Sack
On May 30, 1925, American computer scientist John Cocke was born. Cocke is recognized for his large contribution to computer architecture and optimizing compiler design. He is considered by many to be “the father of RISC computer architecture.” John Cocke – Background Information John Cocke was born in Charlotte, North Carolina. His father Norman was the president of Duke Power Company and a member of the Board of Trustees of Duke University.…
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engineering
Herman Hollerith and the Mechanical Tabulator

Herman Hollerith and the Mechanical Tabulator

Harald Sack
On February 29, 1860, American statistician and inventor Herman Hollerith was born. He is best known for his invention of the mechanical tabulator based on punchcards to rapidly tabulate statistics from millions of pieces of data. He was the founder of the Tabulating Machine Company that later merged to become IBM. Hollerith is widely regarded as the father of modern automatic computation. Herman Hollerith  and the Idea for the Punchcard Herman Hollerith…
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computer science
E.F. Codd and the Success of the Relational Database Model

E.F. Codd and the Success of the Relational Database Model

Harald Sack
On August 23, 1923, English computer scientist Edgar Frank “Ted” Codd was born. His main achievement besides many contributions to computer science was the invention of the relational model for database management, the theoretical basis for relational databases. “At the time, Nixon was normalizing relations with China. I figured that if he could normalize relations, then so could I.” — E. F. Codd [5] When you talk about databases today, usually you…
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computer science
IBM and the Success Story of the Personal Computer

IBM and the Success Story of the Personal Computer

Harald Sack
On August 12, 1981, IBM presented the IBM 5150, the very first IBM personal computer, commonly known as the IBM PC, is the original version and progenitor of the IBM PC compatible hardware platform. It was created by a team of engineers and designers under the direction of Philip Donald Estridge of the IBM Entry Systems Division in Boca Raton, Florida. Actually, it were his decisions that dramatically changed the computer industry,…
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