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A tablet is a thin, lighter-weight mobile computer that has a touch screen. A popular style of tablet is the slate, which does not contain a physical keyboard. Like laptops, tablets run on batteries or a power supply or both; however, batteries in a tablet typically last longer than those in laptops. Touch screen gestures include: tap, double-tap, press and hold, drag or slide, swipe, stretch, and pinch. Data is a collection of unprocessed items, which can include text, numbers, images, audio, and video. Information conveys meaning to users. Your name, address, term, course names, course sections, course grades, and course credits all represent data that is processed to generate your semester grade report. Other information on the grade report includes results of calculations such as total semester hours, grade point average, and total credits. With Facebook, you share messages, interests, activities, events, photos, and other personal information — called posts — with family and friends. You also can 'like' pages of celebrities. With Twitter, you 'follow' people, companies, and organizations in which you have an interest to stay current with the daily activities of those you are following via their Tweets. On LinkedIn, you share professional interests, education, and employment history, and add colleagues or coworkers to your list of contacts Users use online social networks to share their photos, videos, journals, music, and other personal information publicly. Risks include sharing information that would allow others to identify or locate you, and disclosing identification numbers, user names, passwords, or other personal security details. To create a strong password: avoid using personal information; use at least eight characters; use a variety of uppercase and lowercase letters, numbers, punctuation marks, and symbols; change your password frequently; do not use the same password for all websites you access; use a passphrase; avoid common number or letter sequences; memorize all of your passwords, or store them securely using a password management app on your computer or mobile device; use online tools to evaluate password strength a wireless network that provides Internet connections to mobile computers and devices. Wi-Fi hot spots provide wireless network connections to users in public locations, such as airports and airplanes, train stations, hotels, convention centers, schools, campgrounds, marinas, shopping malls, bookstores, libraries, restaurants, coffee shops, and more. Bluetooth hot spots provide location-based services, such as sending coupons or menus, to users whose Bluetooth-enabled devices enter the coverage range. When you synchronize computers and mobile devices, you match the files in two or more locations with each other, as shown in the figure below. With a one-way sync, also called mirroring, you add, change, or delete files in a destination location, called the target, without altering the same files in the original location, called the source. In two-way sync, any change made in one location also is made in any other sync location. Strategies for keeping your files in sync include the following: use a cable and software; use cloud storage; and use web apps. People in the United States access government websites to view census data, file taxes, apply for permits and licenses, pay parking tickets, buy stamps, report crimes, apply for financial aid, and renew vehicle registrations and driver's licenses. Many people and companies use online banking or finance software to pay bills, track personal income and expenses, manage investments, and evaluate financial plans. You can purchase just about any product or service on the web, including groceries, flowers, books, computers and mobile devices, music, movies, airline tickets, and concert tickets, from an online retailer. You can use computers and mobile devices to listen to audio clips or live audio; watch video clips, television shows, or live performances and events; read a book, magazine, or newspaper; and play a myriad of games individually or with others. Hospitals and doctors use computers and mobile devices to maintain and access patient records; computers and mobile devices monitor patients' vital signs in hospital rooms and at home; patients use computers to manage health conditions, such as diabetes; robots deliver medication to nurses' stations in hospitals; computers and computerized devices assist doctors, nurses, and technicians with medical tests; doctors use the web and medical software to assist with researching and diagnosing health conditions; doctors use email, text messaging, and other communications services to correspond with patients; patients use computers and mobile devices to refill prescriptions, and pharmacists use computers to file insurance claims and provide customers with vital information about their medications; surgeons implant computerized devices, such as pacemakers, that allow patients to live longer; surgeons use computer-controlled devices to provide them with greater precision during operations, ; medical staff create labels for medicine, hospital ID bracelets, and more. GPS technology assists travelers with creating maps, determining the best route between two points, locating a lost person or stolen object, monitoring a person's or object's movement, determining altitude, calculating speed, and finding points of interest. Many websites offer services to the public where you can search for and compare flights and prices, order airline tickets, or reserve a rental car. Scientists use computers to assist them with collecting, analyzing, and modeling data. Scientists also use the Internet to communicate with colleagues around the world. Many publishers of books, magazines, newspapers, music, film, and video make their works available online. Computeraided manufacturing (CAM) refers to the use of computers to assist with manufacturing processes, such as fabrication and assembly. Apps can transmit your location, as well as the time you spend using the app. Apps also can collect personal information, including gender and birth year, if you access the app through an online social network profile. Some track user data without permission, or require you to enable tracking before you can use the app. Other apps may track your location without your knowledge, such as apps that parents use to pinpoint a child's whereabouts. If you search for driving directions, coupons, or restaurant tips based on your current location or past activities, you might be using apps that openly use this type of tracking. When people use location-tracking apps, for instance, they run the risk of someone stalking or robbing them. One positive use of location-tracking apps is with emergency services. Lawmakers have struggled with whether law enforcement officials can use location-tracking without a user's knowledge. A web search engine is software that finds websites, webpages, images, videos, news, maps, and other information related to a specific topic. You also can use a search engine to solve mathematical equations, define words, and more. Search engines require that you enter a word or phrase, called search text, to describe the item you want to find. To improve your searches: use specific nouns, put the most important terms first in the search text, list all possible spellings, before using a search engine, read its Help information, and if the search is unsuccessful with one search engine, try another An informational and research website contains factual information, such as libraries, encyclopedias, dictionaries, directories, and guides. A media sharing site is a website that enables members to manage and share media such as photos, videos, and music. A bookmarking site is a website that enables members to organize, tag, and share links to media and other online content. News, weather, sports, and other mass media websites contain newsworthy material. An educational website offers exciting, challenging avenues for formal and informal teaching and learning. A business website contains content that increases brand awareness, provides company background or other information, and/or promotes or sells products or services. A blog is an informal website consisting of time-stamped articles, or posts, in a diary or journal format, usually listed in reverse chronological order. A wiki is a type of collaborative website that allows users to create, add, modify, or delete the website content via a browser. Many websites provide up-to-date medical, fitness, nutrition, or exercise information for public access; some offer users the capability of listening to health-related seminars and discussions. Several websites contain information about space exploration, astronomy, physics, earth sciences, microgravity, robotics, and other branches of science; scientists use online social networks to collaborate on the web. An entertainment website offers music, videos, shows, performances, events, sports, games, and more in an interactive and engaging environment. Online banking and online trading enable users to access their financial records from anywhere in the world, as long as they have an Internet connection. Travel and tourism websites enable users to research travel options and make travel arrangements. Several mapping website and web apps exist that enable you to display up-to-date maps by searching for an address, postal code, phone number, or point of interest (such as an airport, lodging, or historical site). You can purchase just about any product or service on the web, a process that sometimes is called e-retail; with an online auction, users bid on an item being sold by someone else. Job search websites list thousands of openings in hundreds of fields, companies, and locations. E-commerce is a business transaction that occurs over an electronic network, such as the Internet. A portal is a website that offers a variety of Internet services from a single, convenient location. A content aggregation website or web app, sometimes called a curation website, allows users to collect and compile content from a variety of websites about a particular topic or theme. Web creation and management sites provide tools that support the steps in creating and publishing websites describe the purpose of these types of websites:
informational and research, media sharing, bookmarking, news, weather, sports, and other mass media, educational, business, governmental, and organizational, blogs, wikis and collaboration, health and fitness, science, entertainment, banking and finance, travel and tourism, mapping, retail and auctions, careers and employment, e-commerce, portals, content aggregation, and website creation and management. A tag is a short descriptive label that you assign to webpages, photos, videos, blog posts, email messages, and other digital content so that it is easier locate at a later time. Many websites and web apps support tagging, which enables users to organize their online content. List steps to tag digital content. When tagging digital content: apply tags to all digital media, such as photos, music, and videos; separate tags with a separator; choose tags that are descriptive of the content you are posting; after you have tagged the digital content, perform a search on the media sharing site for your content, using the tags as your search criteria, to verify your content is displayed as intended. 1. Plan the website: Identify the purpose, visitors, distinguishing factors, navigation, and domain name. 2. Design the website: appearance, layout, colors, formats, and content. 3. Create the website using a word processing program, a content management system, website authoring software, a text editor, or specialized website management software. 4. Host the website using: a web hosting service, or an online content management system. 5. Maintain the website: ensure its contents are current and all links work properly, test user satisfaction and solicit feedback, and run analytics. A server is a computer dedicated to providing one or more services to other computers or devices on a network. Services provided by servers include storing content and controlling access to hardware, software, and other resources on a network. In many cases, a server accesses data, information, and programs on another server. In other cases, personal computers, devices, or terminals access data, information, and programs on a server. A rack server is housed in a slot (bay) on a metal frame (rack). A blade server is a server in the form of a single circuit board, or blade. A tower server is a server built into an upright cabinet (tower) that stands alone. Most retail stores use a POS terminal to record purchases, process credit or debit cards, and update inventory. Banks place ATMs in public locations, including grocery stores, convenience stores, retail outlets, shopping malls, sports and concert venues, and gas stations, so that customers can access their bank accounts conveniently. Self-service kiosks are used for financial transaction, photo printing, ticketing, vending machines, and visitor centers. email messages, schedules, music, photos, videos, games, websites, programs, web apps, servers, storage, and more. in addition to basic phone capabilities, many smartphones include these features: email, wireless communication, media player, digital camera, speech, video calls, GPS, synchronization, voice control, Bluetooth, and wireless access point. A smart digital camera can communicate wirelessly with other devices and can include apps similar to those on a smartphone. Point-and-shoot cameras, which range in size and features, provide acceptable quality photographic images for the home or small office user. An SLR camera (single-lens reflex camera), by contrast, is a high-end digital camera that has interchangeable lenses and uses a mirror to display on its screen an exact replica of the image to be photographed. Smart digital cameras include all the features of point-and-shoot cameras and also enable you to connect wirelessly via Wi-Fi. Using the wireless capability, you instantly can save captured photos or videos on a networked computer or the cloud, share them on your online social network, upload them to a video sharing site, email them, and more. Although most cameras enable you to review, edit, print, and share photos directly from the camera, some users prefer to transfer photos from a digital camera or the memory card to a computer's hard drive to perform these tasks. Industry experts typically classify computers and mobile devices in six categories: personal computers (fits on a desk, several hundred to several thousand dollars, mobile computers and mobile devices (fits on your lap or in your hand, less than a hundred to several thousand dollars), game consoles (small box or handheld device, several hundred dollars or less), servers (small cabinet to a room full of equipment, several hundred to several million dollars), supercomputers (full room of equipment, half a million to several billion dollars), and embedded computers (miniature, embedded in the price of the product). card reader, digital camera, external hard drive, game console, joystick, modem, mouse, optical disc drive, portable media player, printer, scanner, smartphone, digital camera, speakers, USB flash drive, and webcam. 