CGS test 1 Ch1 being computer literate means being familiar enough with computers that you understand their capabilities and limitations being a savvy computer user Avoiding hackers and viruses Protecting your privacy Understanding the real risks Using the web and internet wisely Avoiding online annoyances Being able to maintain and upgrade your computer Software instructions that tell people what to do Information Technology IT study focused on managing and processing information and the automatic retrieval of information Computers will take 60 of human jobs by 2030 Data mining the process of searching huge amounts of data with the hopes of finding a pattern How Netflix recommends movies you might like Maxicode sticker which includes an inkblot and can be scanned revealing importanrt information Bluetooth technology a type of wireless communication offshored sent to other countries Some countries with lesser technologies have some jobs offshored to us computer forensics analyzes computer systems with specific techniques to gather legal evidence Micro expression 1 25th of a second reveals true emotion ASVAB armed services vocational aptitude battery test digital home have an appropriate computer and digital devices that are connected to a home network Media computer most imp A tv tuner Blue ray and cd players and recorders A network adapter A network An internet ready digital television Universal remote UAV s unmanned Ariel vehicles drones Radio frequency identification tags RFID track animals such as for farming CPU central processing units patient stimulators full sized mannequins that can speak breath and blink Help medical trainers practice public domain effort computing realistic computer simulations of all systems nd features of the human anatomy Started in Auckland New Zealand Positive ID is the company which makes the verichip a personal ID chip National severe storms lab and national center for computing applications have teamed up to more accurately predict tornadoes Nanoscience involves the study of molecules and structures called nanostructures that range in size from 1 100 nanometers small objects Nano is 1 billionth Nanotechnology using nanostructures to build tiny devices Affective computing computing that tries to deliberated influence emotion Computer tries t make you happy when your sad ESP emotional social prosthesis helps people with autism Digital divide the gap between the haves and have nots when regarding to technology Tech in focus 1 Altair 8800 first personal computer Produced by micro instrumentation and telemetry systems MITS Started the revolution of PC s Apple computer company founded by Steve Wozniak and Steve Jobs Apple 1 first apple computer Apple 2 operating system stored in ROM made it most popular Apple 3 Apples strongest competitors were Commodore RadioShack and IBM The Osborne first portable computer produced by Osborne Company Microsoft founded by Bill Gates and Paul Allen Invented BASIC beginner s all purpose symbolic instruction code Revolution the software industry Disk 2 floppy disk drive system Quick and dirty operating system QDOS began Microsoft s reign as 1 VisiCalc 1st spreadsheet program WordStar first word processing system Graphical user interface GUI put digital projections on computer screens increased sales Mosaic 1st internet web browser Pascalene first mechanical calculator Invented by Blaise Pascal Had 4 basic functions Charles Babbage father of computing Invented first automatic calculator THE ANALYTICAL ENGINE computer gathers processes outputs and stores data binary language language computers understand 1 s and 0 s Bits binary digit numbers in binary code Ch 2 Kilobyte 1000 bytes Megabyte 1 million bytes Gigabyte one billion bites Terabyte 1 trillion bytes Hardware part of the computer you can physically touch Application software software that we use on computers to let us complete tasks System software allows your computer s hardware and application software to work together Operating system OS most common Notebook computer a portable computer laptop Netbook even smaller notebook computer Tablet pc portable and has a touch sensitive screen Desktop computer intended for use in a single location Peripheral device a device that attaches to the computer All in one computer monitor processor and screen are ALL IN ONE Mainframe large computer that supports hundreds of users at the same time Supercomputer does many complex calculations rapidly Embedded computer a computer chip that resides in another device Input devices allows us to enter data such as images text sounds into the computer Stylus looks like a pen but has no ink QWERTY devices keyboard most common keyboard Trackball mouse a mouse with the roller thing on top Touchpad small sensitive spot at the bottom of the keyboard TrackPoint device little wheel on the mouse between left and right clicker Output devices sends processed data out of your computer in the form of text or pictures Monitor display screen Printer LCD monitors flat panel monitors liquid crystal display most common Legacy technology techniques or parts no longer popular in modern society Pixel millions of tiny dots on a display screen which help generate the picture Aspect ratio width to height proportion on monitor Resolution clearness Brightness candelas per square meter Response time milliseconds it takes to change color Contrast ratio light intensity Viewing angle measured in degrees Plotter printer which prints huge oversized pictures Thermal printer use wax or burn dots to produce the picture and print choosing the right printer Speed pages per minute Resolution clearness of things printed Color output Use and cost of printer Cost of consumables printer ink etc Motherboard main circuit board that contains the set of chips that powers the system Expansion adapter cards circuit boards that provide additional functionality Sound card connection to speakers Video card connection to monitor Modern card connection to internet via phone line Network interface card connection to internet via high speed internet RAM ROM ready only memory Central processing unit controls all computers functions Megahertz millions machine cycles per second Gigahertz billions machine cycles per second Drive bays storage devices for the computer Interhard hard drive holds all permanently stored programs and data External drive bay can be accessed from outside system unit Nonvolatile saves even after system is turned off
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