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203_2011_2_b - INF1520 HUMAN-COMPUTER INTERACTION 1...

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INF1520/203/2/2011 HUMAN-COMPUTER INTERACTION 1 Tutorial letter 203 for INF1520 Solutions to Assignment 3 & Examination Information 2011 Semester 2 School of Computing
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Human-computer Interaction 1 2 Dear student , This tutorial letter contains the solutions to Assignment 3 as well as some information about the examination. By now you should have received the following tutorial letters. Please contact the Department of Despatch for tutorial matter that you have not received. The telephone number was supplied to you upon registration. INF1520 Study guide INF1520/101/3/2011 Information about this module, assignment questions for semesters 1 and 2 INF1520/201/2/2011 Solution to assignment 1 INF1520/202/2/2011 Solution to assignment 2 INF1520/203/2/2011 This tutorial letter Tutorial letters can be downloaded from www.osprey.unisa.ac.za , which is the official web site of the School of Computing. https://my.unisa.ac.za also offers services to students but the lecturers do not have direct control over the information provided there.
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INF1520/203/2/2011 3 Solutions to Assignment 03 UNIT 1 Activity 1.1 Complete the time line of Table 1 for the historical context of human-computer interaction, by supplying the missing items. Answers are given below in bold. Table 1: The historical context of human-computer interaction < 1450 Persian astrologer, Al Kashi , used a device to calculate the conjunction of planets. 1600 The German mathematician, Wilhelm Schickard , developed a tool to perform simple addition and subtraction. Blaise Pascal built a simplified replica of the Schickard=s device. 1820 - 1870 Charles Babbage built his Difference Engine to calculate 6 th degree polynomials. Charles Babbage developed his Analytical Engine, which was the first calculating device to use punched cards. Herman Hollerith developed a computational device, using punched cards, to calculate census statistics. Computer-Tabulating-Recording Company, the first computer company, was founded. 1914 Thomas J Watson joined the Computer-Tabulating-Recording Company and built it up to form the International Business Machine's Corporation (IBM). 1943 Alan Turing developed the Colossus to try and break German encryption techniques. The Colossus accepted input via a keyboard and produced output via a teleprinter. Vannevar Bush published his >As we may think= article in Atlantic Monthly, introducing his Memex system. 1946 The ENIAC machine, the first all electronic digital computer, was
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Human-computer Interaction 1 4 produced by J W Mauchly and J P Eckert in the United States. IBM introduced the FORTRAN high-level programming language. 1963 Ivan Sutherland developed the SketchPad system at the MIT Lincoln Laboratory, the first sophisticated drawing package. 1976 Steven Wozniak produced Apple I, based on the MOStek 6502 chip. 1981 IBM produced their first PC with DOS.
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