Chapter 1

Chapter 1 - n Chapter 1 Why Study Computers and What is a...

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Unformatted text preview: n Chapter 1 Why Study Computers and What is a Computer? Digital Technologies? The Power of Connections n n n n n n Please discontinue use of cell phone and turn off the ringer. n What Can Computers Do? Information Systems Using Digital Technologies to Succeed in Your Career Using Digital Technologies to Achieve Personal Goals Information Security and the Social Impact and Implications of Digital Technologies Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Succeeding What is a Computer? n Key Terms Computer literacy ¡ Computer ¡ Technology ¡ Digital electronics device ¡ Bit ¡ Byte ¡ File ¡ Data ¡ Digitization ¡ Information ¡ Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Microprocessor ¡ What’s a Computer? www.target.com Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > A Computer is… n Electronic instructions A digital electronics device that combines hardware and software to accept the input of data, process and store the data, and produce some useful output. Tangible components Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Digital Technology n n Technology refers to tools, materials, and processes that help solve human problems. Many of today’s technologies fall under the classification of digital electronics. Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Digital Electronics n Digital electronics devices store and process bits electronically. ¡ A bit represents data using 1’s and 0’s ¡ Eight bits is a byte – the standard grouping in digital electronics ¡ Digitization is the process of transforming information into 1’s and 0’s For more on digitization: http://en.wikipedia.org/wiki/Digitization http://electronics.howstuffworks.com/analog-digital.htm http://www.hardwaresecrets.com/article/317 Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Knowledge Worker n Today’s well-equipped knowledge worker makes use of many digital technologies. Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > General and Special Purpose Computers n General-purpose computers can run any number of software applications n Special-purpose computers are designed primarily for one particular function Computer Literacy is a working understanding of computers and their uses Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Producing Valuable Information n n Data: items stored on a digital electronics device: numbers, characters, & sounds Information: data organized and presented in a manner that provides value to the user: documents, graphs, music, photos Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Microprocessor n Sometimes called a chip or just a processor, combines microscopic electronic components on a single integrated circuit that processes bits according to software instructions. Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Digital Technology Metrics Kilo, Mega, Giga, what comes next? Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Personal Computer (PC) n Key Terms ¡ Desktop computer ¡ Notebook computer ¡ Netbooks ¡ Tablet PC ¡ Smart phone Examples: www.hp.com www.apple.com www.microsoft.com/windowsxp/tabletpc Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Synchronize n When you synchronize or sync two digital devices, you update the files shared between the devices so that both copies are up-to-date and identical. Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Computing Platform n A computer’s type, processor, and operating system define its computing platform. Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Types of General Purpose Computer Systems Supercomputer Most powerful with fastest processing speeds Server Powerful, multiprocessor computers that provide services to many users over a network E R W Workstation O Powerful, multiprocessor, P special-purpose PC Personal Computer (PC) Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Special-Purpose Computers n A kiosk is a computer station that provides the public with specific and useful information and services. The processor and operating system used in the Kindle allow users to connect to the Kindle store, where books, magazines, newspapers, and blogs are available to download for a fee. Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Special-Purpose Mobile Devices n The “desk” has to be wherever you are. The trend of digital electronic devices to become smaller and increasingly powerful has fully supported the move to an increasingly mobile workforce Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Mobile Media n Movies, television shows, and other video clips can be downloaded from the Web or transferred from DVD to the devices and displayed on the 3.8-inch screen. Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > The Power of Connections n Key Terms ¡ Telecommunications ¡ Computer Networks ¡ Protocols ¡ The Internet ¡ World Wide Web ¡ Wireless Network ¡ Wi-Fi Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Telecommunications & Computer Networks n n Telecommunications are communications that take place electronically over a distance. A computer network is a telecommunications network that connects two or more computers for data communications. Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > The Internet & Web n n The Internet is the world's largest public computer network, a network of networks, that provides a vast array of services. The Web is an Internet service that provides convenient access to information through hyperlinks 1,463,632,361 Internet Users & Growing Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Wireless Networking n n Wireless networks use radio signals rather than cables to connect users. Wi-fi is a popular wireless standard. Wireless Campus Wi-fi Access Point Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > What Can Computers Do? n Key Terms ¡ Artificial Intelligence (AI) ¡ Automation ¡ VoIP ¡ Database Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > The Computer and Human Relationship n The creative and interpersonal endeavors that people find most engaging, computers are ill suited to perform … as of yet. Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Computation n Computers were invented to compute – calculate solutions to mathematical problems. Artificial Intelligence (AI) deals with simulating human thought and behavior in computers. Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Automation n Automation involves utilizing computers to control otherwise human actions and activities. Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Communication n Computer systems control, support, or provide many forms of communication. ¡ E-mail ¡ Instant messaging ¡ Blogs ¡ Social networking Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Entertainment n Digital technologies not only enrich people’s entertainment experiences, but also have revolutionized entertainment distribution. Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Information n A Computer-based Information System (CBIS) uses these components to manage and distribute information. Database is a collection of data stored on a computer and organized to meet users’ needs. Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Information Systems n Key Terms ¡ Information technology (IT) ¡ Systems development ¡ Transaction support system (TPS) ¡ Management Information System (MIS) ¡ Decision Support System (DSS) ¡ Expert System Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Information Technology (IT) n IT can be defined as issues related to the components of a computerbased information system. Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Information Systems n Systems development is the activity of creating or modifying existing information systems. NASA scientists use management information systems to examine the data sent from Mars Rovers. Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Information System Types Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Information Security and the Social Impact of Digital Technologies n Key Terms ¡ Information Security ¡ Hacker ¡ Digital divide Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Information Security n More on Info Sec at www.cert.org www.whitehouse.gov/pcipb/ www.issa.org Information security refers to the protection of information systems and the information they manage against unauthorized access, use, manipulation, or destruction, and against the denial of service to authorized users. Hacker an individual who subverts computer security without authorization. Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > The Impact of Digital Technologies on the World n Society is entering the age of pervasive computing Pervade ~ to become diffused throughout every part of something. Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > Chapter 1 Questions? Succeeding with Technology 4th ed > Why Study Computers and Digital Technologies? > ...
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Chapter 1 - n Chapter 1 Why Study Computers and What is a...

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