EECS 1520 Lecture Notes - Lecture 1: Joseph Marie Jacquard, Jacquard Loom, Wilhelm Schickard

• School: York University
• Department: Electrical Engineering and Computer Science
• Course: EECS 1520
• Professor: TBA

Document Summary

Eecs 1520 lecture 1 a brief history of computing. Origins of digital computers: earliest computing device designed to aid numeric computation, abacus: first developed in babylonia, over 500 years ago and still used today in some parts of the world, a finger-powered pocket calculator. Early calculating machines: wilhelm schickard (1592-1635), mechanical calculator, blaise pascal (1632-1662), decimal calculator, could add and subtract by turning dials, g. w. f. Leibniz (1646-1(cid:1011)1(cid:1010)(cid:895), (cid:862) tepped re(cid:272)ko(cid:374)er(cid:863), full-featured (cid:272)al(cid:272)ulator, (cid:894)(cid:862)lei(cid:271)(cid:374)iz (cid:449)heel(cid:863) for multiplication) Joseph marie jacquard inventor: used punch cards to define complex patterns, patterns woven into textiles, punch cards were later used to code computer programs. Inspired by jacqard"s use of pu(cid:374)(cid:272)h (cid:272)ards to (cid:272)o(cid:374)trol a (cid:894)(cid:449)ea(cid:448)i(cid:374)g(cid:895) (cid:373)a(cid:272)hi(cid:374)e. Ada lovelace: writing programs for the difference engine, world"s first progra(cid:373)(cid:373)er. George boole: boolean algebra proposed logical statements and transforming logical statements in an easier way than with the english language, used in logic circuits, removing potential for mistakes. Punch cards input holes according to a particular data.