Chapter 1 - 6 Lecture Slides

Chapter 1 - 6 Lecture Slides - Information Technology in...

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Unformatted text preview: Information Technology in Theory Chapter 1 Introduction to Information Technology Information Technology in Theory By Pelin Aksoy and Laura DeNardis Information Technology in Theory 2 Objectives • Define “information” and understand the four methods of representing and conveying information • Describe some important historical milestones in recording and exchanging information • Explain what technical topics are included in the field of information technology Information Technology in Theory 3 Objectives (Continued) • Describe the role information technologies play in modern society • Articulate some cutting-edge trends in information technology • Gain familiarity with current career specializations in information technology Information Technology in Theory 4 Defining Information • Defining “information” is not straightforward – A fact or series of facts that carry meaning – The value of these facts strongly depends on context • Examples of information – Spam – 911 emergency call – Air traffic control map – Text message – Instructions for building a bomb – Sports scores Information Technology in Theory 5 What Counts as Information? Information Technology in Theory 6 The Various Forms of Representing Information • The routes to representing information have not changed for centuries – Spoken word (sound) – Text – Pictures – Numbers • Today, information technologies (e.g. web sites) still represent information with text, images (including video), numbers, and sound Information Technology in Theory 7 How Historically Have Humans Conveyed Information? Information Technology in Theory 8 Image Technology Milestones Information Technology in Theory 9 Sound Technology Milestones Information Technology in Theory 10 Alphanumeric Technology Milestones Information Technology in Theory 11 The Speed and Scope of Information • What has changed is the speed and scope of information technologies • Consider what a student can do in an hour: – Check out the day’s most viewed videos on YouTube – Make two cell phone calls – Download a homework assignment for class – Exchange several text messages with friends – Book an airline reservation for a spring break trip – Consult a news source – Download a new music file – Use the electronic library system to reserve a book – Check the day’s sports scores – Play an interactive online game Information Technology in Theory 12 Defining Information Technology • Information technologies are systems of hardware and/or software that capture, process, exchange, store, and/or present information using electrical, magnetic, and/or electromagnetic energy. • Technologies meeting this definition range from digital cameras to Internet radio to corporate computer networks. Information Technology in Theory 13 Two IT Examples • Two examples of information technologies that capture, process, exchange, store and present information: – Cellular Telephony – Wireless Internet Access Information Technology in Theory 14 Cellular Telephony Information Technology in Theory 15 Wireless Internet Access Information Technology in Theory...
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Chapter 1 - 6 Lecture Slides - Information Technology in...

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