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Chapter 1 Part 1 Why Study Computers and Digital Technologies?

Please discontinue use of cell phone and turn off ringer. Chapter 1 Part 1 Why Study Computers and Digital Technologies?. What is a Computer? Part 1 The Power of Connections What Can Computers Do? Part 2 Information Systems Using Digital Technologies to Succeed in Your Career

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Chapter 1 Part 1 Why Study Computers and Digital Technologies?

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  1. Please discontinue use of cell phone and turn off ringer Chapter 1 Part 1Why Study Computers and Digital Technologies? What is a Computer? Part 1 The Power of Connections What Can Computers Do? Part 2 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

  2. Key Terms • Personal computer • Smart phone • Synchronize • Computing platform • Server • Supercomputer • Kiosk • Embedded computer • Computer literacy • Computer • Technology • Digital electronics device • Bit • Byte • File • Data • Digitization • Information • Microprocessor • Kilo, Mega, Giga, etc • Hardware • Software 1.1 What is a Computer? Some Fundamental Concepts

  3. What’s a Computer? www.target.com

  4. Tangible components Electronic instructions How do these concepts relate to a digital music player? A Computer is… • A digital electronics device that combine hardware and software to accept the input of data, processand store the data, and produce some useful output.

  5. Digital Electronics • Digital electronics devices store and process bits electronically. • A bit represents data using 1’s and 0’s • Eight bits are 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

  6. General and Special Purpose Computers • General-purpose computers can run any number of software applications • Special-purpose computers are designed primarily for one particular function Computer Literacy is a working understanding of computers and their uses

  7. Relate these concepts to Producing Valuable Information • Data: items stored on a digital electronics device: text and values • Information: data organized and presented in a manner that provides value to the user: documents, graphs, music, photos • Computers provide value to people by transforming data into information.

  8. Digital Technology Metrics Kilo, Mega, Giga, what comes next?

  9. Personal Computer (PC) • General purpose computer designed to accommodate an individual’s needs. • Desktop computer • Notebook computer • Tablet PC • Smart phone Examples: www.hp.com www.apple.com www.microsoft.com/windowsxp/tabletpc

  10. Syncing PCs • Many users access data from more than one PC. Synchronizing keeps all copies of data up to date.

  11. Computing Platform • A computer’s type, processor, and operating system define its computing platform.

  12. P O W E R Types of General PurposeComputer Systems Supercomputer Most powerful with fastest processing speeds Server Powerful, multiprocessor computers that provide services to many users over a network Workstation Powerful, multiprocessor, special-purpose PC Personal Computer (PC)

  13. Game consoles Digital Music Players Embedded Computers Kiosk Special-Purpose Computers& Mobile Digital Devices

  14. Review Is a bank ATM machine a computer? Why? What type of computer? How many bits in a byte? How many MB’s in a GB? What comes after GB? How many GB’s in a PB? List 4 types of personal computers. What is the most powerful type of computer? What kind of computer delivers Web pages to browsers?

  15. Key Terms • Telecommunications • Computer Network • Protocols • The Internet • World Wide Web • Wireless Network • Wi-Fi 1.2 The Power of Connections Telecommunications and Computer Networks

  16. Telecommunications & Computer Networks • 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.

  17. The Internet & Web 1,463,632,361 Internet Users& Growing • The Internet is the worlds 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 • A good video More Internet info at: www.internetworldstats.com http://www.cybergeography.org/atlas/geographic.html

  18. Wireless Campus Wi-fi Access Point Wireless Networking • Wireless networks use radio signals rather than cables to connect users. • Wi-fi is a popular wireless standard.

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