01:198:170 Lecture Notes - Lecture 1: Herman Hollerith, Antikythera Mechanism, Difference Engine

• School: Rutgers University
• Department: Computer Science
• Course: 01:198:170
• Professor: Stephen Stoll

Document Summary

Information technology basic concepts: algorithms, layered software, private laptops, early computing machines, ex: antikythera mechanism, hardware vs. software, abstraction. Data: converting information into digital form, the data can be shown in numbers, ex: 010010000 01100101. Charles babbage (1792-1871: he was a british inventor who invented, difference engine, difference engine ii, analytical engine, also known as the father of computer age . Analytical engine: used for punching cards, printer, curve plotter, bell, programming language, memory. Difference engine ii: herman hollerith took 8 years to hand process the data, a year later in 1890, the data was digitized, the punch cards were able to digitize the process. Personal computers: xerox"s alto, also had a mouse, graphical user interface. Altair 8800 (mid 1970s: this needed advanced knowledge of computer architecture. Apple ii: they were first pc to use a mouse, created first electronic spreadsheet (visicalc, affordable to the people. Input devices: storage devices, processor, output devices.