Chapter 1 Part 1 Why Study Computers and

Chapter 1 Part 1 Why Study Computers and Digital Technologies? Part 1 n n What is a Computer? The Power of Connections n n 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 n n Please discontinue use of cell phone and turn off ringer Succeeding with Technology – 3 rd Edition Part 2

1. 1 What is a Computer? Some Fundamental Concepts Key Terms • Computer literacy • Computer • Technology • Digital electronics device • Bit • Byte • File • Data • Digitization • Information • Microprocessor • Kilo, Mega, Giga, etc • Hardware • Software Succeeding with Technology – 3 rd Edition • Personal computer • Smart phone • Synchronize • Computing platform • Server • Supercomputer • Kiosk • Embedded computer

What’s a Computer ? Succeeding with Technology – 3 rd Edition www. target. com

A Computer is… n A digital electronics device that combine hardware and software to accept the input Electronic of data, process instructions and store the data, and produce some useful output. Tangible components How do these concepts relate to a digital music player? Succeeding with Technology – 3 rd Edition

Digital Electronics n 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 Succeeding with Technology – 3 rd Edition

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 – 3 rd Edition

Producing Valuable Information n Data: items stored on a digital electronics device: text and values n Information: data organized and presented in a manner that provides value to the user: documents, graphs, music, photos n Computers provide value to people by transforming data into information. Relate these concepts to Succeeding with Technology – 3 rd Edition

Digital Technology Metrics Kilo, Mega, Giga, what comes next? Succeeding with Technology – 3 rd Edition

Personal Computer (PC) n 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 Succeeding with Technology – 3 rd Edition

Syncing PCs n Many users access data from more than one PC. Synchronizing keeps all copies of data up to date. Succeeding with Technology – 3 rd Edition

Computing Platform n A computer’s type, processor, and operating system define its computing platform. Succeeding with Technology – 3 rd Edition

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 – 3 rd Edition

Special-Purpose Computers & Mobile Digital Devices Game consoles Digital Music Players Kiosk Embedded Computers Succeeding with Technology – 3 rd Edition

Review n. Is a bank ATM machine a computer? Why? What type of computer? n. How many bits in a byte? n. How many MB’s in a GB? n. What comes after GB? n. How many GB’s in a PB? n. List 4 types of personal computers. n. What is the most powerful type of computer? n. What kind of computer delivers Web pages to browsers? Succeeding with Technology – 3 rd Edition

1. 2 The Power of Connections Telecommunications and Computer Networks Key Terms • Telecommunications • Computer Network • Protocols • The Internet • World Wide Web • Wireless Network • Wi-Fi Succeeding with Technology – 3 rd Edition

Telecommunications & Computer Networks n Telecommunications are communications that take place electronically over a distance. n A computer network is a telecommunications network that connects two or more computers for data communications. Succeeding with Technology – 3 rd Edition

The Internet & Web 1, 463, 632, 361 Internet Users & Growing n The Internet is the worlds largest public computer network, a network of networks, that provides a vast array of services. n The Web is an Internet service that provides convenient access to information through hyperlinks More Internet info at: www. internetworldstats. com n A good video http: //www. cybergeography. org/atlas/geographic. html Succeeding with Technology – 3 rd Edition

Wireless Networking n Wireless networks use radio signals rather than cables to connect users. n Wi-fi is a popular wireless standard. Wireless Campus Wi-fi Access Point Succeeding with Technology – 3 rd Edition