EXAM 1 Study Guide 3D images and animation 1 Digital Graphics computer based media applications that support creating editing and viewing 2D and 2 Vector graphics files store geometric descriptions formulas that define all the shapes in the image a Don t lose clarity when enlarged b Use fewer bites 3 Pixels picture element grid of small points 4 Bit mapped graphics storing the color of each pixel to for a picture a Lose clarity when enlarged b Use more bites 5 AM Amplitude modulation FM Frequency modulation 6 Satellite Radio radio that receives broadcast via communications satellite Monthly subscription 7 Audio compression Formats a MP 3 compressed audio file format used on file sharing networks and the Internet Compresses cda files by a factor of 10 14 b c wma Microsoft Windows compressed audio file format m4p and aac Apple compressed audio file format MOST efficient 8 Blog web log Websites created to express individual views on a topic 9 Podcast MP3 contains a recorded broadcast distributed over the internet 10 Networks a WiFi wireless fidelity networking that uses access points to connect users within a range of 250 1000 ft developed by IEEE b VPN virtual private network uses tunneling to securely send private data over internet c LAN local area network connects computers systems within the same geographical area d WAN wide area network connects LANs between long distances using satellite or telephone transmission e WiMAX interoperates with WiFi but faster 31 mile range 11 Bluetooth low cost short range wireless specification for connecting mobile products 12 GPS global positioning system satellite network that can pinpoint exact locations on earth 13 RFID radio frequency identification tiny microprocessor with antenna that broadcasts identifying info to RFID reader Used to track merchandise b t suppliers retailers 14 GSM international cellular carriers use as their network standard CDMA USA 15 Cookie text file placed on your hard disk by a website that stores your info and preferences 16 World Wide Web www internet based service Access to info via hyperlinks a HTTP hypertext transfer protocol protocol used to control communication b t web clients and servers b SMTP simple mail transfer protocol sending and receiving email c TCP IP transmission control protocol divides data into packets and reassembles packets upon delivery internet protocol controls the delivery of packets between IP addresses 32 bit that identifies sender receiver 17 Client Server relationship b t two programs Client makes service request Server provides service 18 Internet Service a Cable modem provided by cable television providers broadband 2Mbps b Dial up provided by multitude of ISPs narrowband 50 Kbps c DSL digital subscriber line provided by phone company 1 5Mbps 19 Primary internet infrastructure internet backbone pathways and connections owned by telecom companies www hyperlinks optimal functioning of app 20 Software System Requirements accept agreement Pre requisites that need to be installed to provide 21 Productivity software designed to help individuals be more productive Examples a Information systems computer systems that make the use of hardware software databases telecommunications people and procedures and to manage and dist dig info b Personal information managers systems software the individuals and groups org can use to store info such as a list of names addresses c Spreadsheets store rows and columns of data Calculations and analyze data and generate graphs d Database a collection of files organized e Word processor text and doc manipulation software f Graphics software image editing 22 Operating system set of programs that run control comp hardware 23 Open source software programs that make the sources available to public 24 Executable files stores computer instructions in binary machine language Software must contain at least 25 Programming language primary tool of computer programmers English like commands for writing one software 26 Storage a Hard disk magnetic iron oxide storage More permanent than RAM b Flash drive flash memory to store bits Solid storage c CD compact disk optical storage uses laser to burn pits 1 2 mm substrate 7 GB d DVD digital video disk 6mm substrate 4 7 GB e Blue laser disk highest quality 1 mm substrate 25GB 27 Moore s Law the number of transistors per square inch on integrated circuits will doubled every 2 years 28 32vs 64 bit processor determines how many bits can be processed at one time 64 29 Dual core vs Quad core CPU 2 CPUs 2xfaster vs 4 CPUs 4xfaster on one chip 30 Speeds 31 Storage a Kilohertz 1000 b Megahertz millions c Gigahertz billions d Terahertz trillions cycles per second a RAM Random Access Memory primary storage b ROM stores the boot process instruction that start the computer and load the OS from c CMOS memory provides semipermenant storage for system configuration information hard drive into RAM that may change 32 ASCII codes used to represent characters 33 Binary Numbers bit uses 0 and 1 and is used by computers and digital devices to represent and process data 34 Bytes group of 8 bits a Kilobytes 1000 b Megabytes millions c Gigabytes billions d Terabytes trillions e Petabytes gazillion units of storage 35 Computer Based Info Systems CBIS Hardware and software database telecommunications people and procedure to handle info 36 Decision Support System information system for problem specific decision making 37 Transaction Processing System TPS Info syst used to support and record transactions 38 Expert System acts like a human expert in a field Makes suggestions and conclusions 39 Management Information System MIS info in a report used to make decisions 40 Social Impacts of Information Technology a Economic and social effects b Ethical 41 Know how to open and edit a Word 2007 document a Insert dates c The Digital Divide social and economic gap between those that have access to computers and information technologies and those that do not b c Insert and manipulate images Insert page breaks d Use styles fonts background colors e Insert and use citations references f Set and use headers and footers to include page numbers g Check for spelling and grammar errors
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