History of Computers: • John Atanasoff & Clifford Berry-built first digital computer called ABC. 1937 • John Mauly & Eckert completed ENIAC 1946 • Grace Hopper idea of higher level programming language 1952 Various broadband internet connections: broadband, cable internet service provides through cable television network, DSL provides connections using telephone lines, fiber to premises use fiber optic cable to provide, fixed wireless uses dish-shaped antenna via radio internet, wifi uses radio signals, cellular radio networks have built0in compatible tech, satellite internet communicates with satellite, dial-up uses modem in computer and standard telephone line • Internet is worldwide collection of network that links millions of businesses, government agencies, educational institutions, and individuals o Some services found on internet: 1. Email 2. Web 3. FTP File Transfer 4. Chat 5. Message board 6.Instant messagingHow did the internet originate?
Domain name-google.com Examples of generic TLD: aero (aviation community members), biz (businesses of all sizes), edu (educational institutions), gov (government agencies), net (network providers or commercial companies), org (nonprofit), com (commercial orgs, biz, and companies)Worldwide web consists of worldwide collection of electronic web pagesWeb site is collection of related web pages Web server is computer that delivers requested web pages to computerWeb 2.0 refers to web sites that provide means for users to interact URL or Web Address: http:// =protocol, =domain name, grsm/planyourvisit =path, wildlifereviewing.htm =web page nameWeb server delivers web page to your address, HTML is web page file format just text, Http is protocol the web is based onBrowser is application program that allows you to view web pages (internet explorer, chrome, safari, firefox, opera)What happens when data retrieved from web page?Two types of search tools are search engines and subject directories•Types of websites: portal, news, info, business, educational, entertainment, advocacy, blog, personal, wiki, online social network, web app, content aggregator
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