CS 3501 Lecture Notes - Lecture 1: Wilhelm Schickard, Herman Hollerith, Blaise Pascal
Document Summary
Computer org and arch ppt chapter 1 (2 of 2) Computer evolution is classified into 4 generations according to the salient technology of the era. Pre-computer era: an abacus (ab-ah-cus) was used. Made with a bamboo frames and beads. 1st generation of modern computing (1940s-1950s: during mid-1940s, the 2nd world war needed strategic type calculations performed and this lead to the 1 st generation of computers, vacuum tubes. The first generation: vacuum tube computers (1945 - 1953) University of pennsylvania, 1946: magnetic storage, filled entire room. 2nd generation of modern computing (1950s-1960s: at&t bell labs" invention of the transistor occurred, made the computer smaller, faster and more reliable, software industry was born during this era (fortran, cobol, compiler invented, punch cards. 4th generation of modern computing (1980s to ???: chips continued to get smaller and smaller (and faster and faster, for 3rd-gen-era, many transistors on a single chip to form an ic for 4th-gen-era, many.
