5 HardwareThe physical, touchable parts of the computer.
6 SoftwareA term that is used in contrast to hardware; everything in the computer that is not hardware is software.Software allows you to:Process wordsCalculate numbersSend anBrowse the InternetAnd many more…
7 InputA collection of raw data from the outside world that is put into the computer.Example: The payroll clerk collects workers' timecards so she knows how many hours each person worked and then types the hours from the timecards into a spreadsheet.
8 Input Devices Keyboard Mouse Scanner Digital Camera Bar code reader Graphic tabletsAnd many more…
9 Processing Manipulating data Bold, italicize, underline, double space in a word processorEnter formulas and calculate totals in a spreadsheetEdit a picture
10 StorageThe place where data is held when it is not needed for processingStorage Devices are computer components capable of storing digital dataExamples of Storage Devices:Floppy Disk (almost obsolete)Hard DriveCD, DVDFlash Drive
11 Output The results of processed data Examples of output: A printed paperA presentationAudioVideoData is entered through various forms (input) into a computer, the data is manipulated (processing), and then information is presented to a human (output).
15 Input and Output Devices As you continue, you will review several different input and output devices.You need to be able to identify each device, tell if it is an input or output device and indicate what the devices are used for.
16 Keyboard The most commonly used input device It is made up of : Alphabetic KeysNumeric KeysFunction KeysCommand KeysConnected to the computer through a USB connection or wirelessly
17 MouseA hand-operated input device that controls the cursor on the screen as you move it around on a desktopOlder = ball style mouseNewer = “optical” technologyTurn over your mouse. Do you see a red light? If you do, then you are using an optical mouse.
18 Touchpad An input device used to move the cursor on a laptop computer As you slide your finger over the surface, sensors underneath detect the movement, direction and speedUseful when carrying a mouse is not practical
19 TrackballA pointing device that works like a mouse turned upside down; the ball in on top of the deviceAdvantages:TrackBall is stationary so it does not require much space.You can place a trackball on any type of surface, including your lap.
20 JoystickJoysticks are input devices, similar to a mouse, that allow you to move the cursor in any directionJoysticks were originally used by pilots as part of an airplane's controls. Technology developed to let gamers experience a more realistic game environment
21 Microphone A microphone is used to input sound The sound is detected by the microphone and an electronic signal is transmitted to the computerSpecial hardware is used to convert the analog data (sound) into digital data so it an be stored and manipulated on the computer.
22 ScannerScanners are used to convert images or text on paper into a digital image format (.bmp, .gif, .jpeg)Scanners with optical character recognition can convert text on paper into text that can be edited in a word processor
23 Web Cam Web cam is short for ‘web camera’ It is an input device that captures a video or image of the scene in front of itSome are built into the computer (i.e. Laptop), others are connected via USB cableUsed for chatting online, security and tourism (i.e. view your favorite animal at the zoo online)
24 Graphics TabletGraphics tables are used by graphics designers and illustrators to input dataCreate accurate drawings on a screen that could not be produced with a mouse or stylusUsually consists of a tablet that you draw on and a pen that has pressure sensitive tips allowing the artist to draw heavier and lighter lines
25 Biometric Devices AKA—Access Control Devices Uses a body feature of a person seeking access to identify and authorize that personFingerprint scannerIris scanAccess card (can be scanned like a credit card or contain a radio frequency transmitter used to identify the card holder)Britain and Germany have included a microchip in their passport. The microchip contains electronic data unique to each userFingerprint scanner is a common biometric device on personal computers. Can be used in place of a login and password to gain access to computer files or folders. Prints stored on the computer. If the print matches, access to the computer is granted.
26 Monitor Most commonly used output device The picture on a monitor is made up of tiny colored dots called pixelsThe quality and detail of the picture depends on the number of pixels that the monitor can display
27 Ink Jet PrinterAn output device that produces a hard copy by spraying ink on paperRelatively cheap to buyCan print it both black and white or colorLimitations:SlowNot designed for high-volume printingInk cartridges are expensive
28 Laser Jet PrinterA output device that prints similar to a photo copy machineUses powdered ink called ‘toner’ to fuse onto the paper by heat and pressureBlack and white versions are relatively cheap to purchaseCapable of quick high-volume printing
29 SpeakersMost computers have a small internal speaker that produces beeping sounds when you make an errorComputers can be fitted with a sound card which enables sound (audio) to be output through external speakers
30 Digital CameraAn input device that takes photographs and stores them as digital files on a computer
31 ProjectorA device which connects to a computer and is used to project the output from the computer onto a wall or screen.
32 Touch ScreenThe only device that serves as both an input and output deviceYou view the options available to you on the screen (output) and then use your finger to touch the option you have chosen (input)
33 PlotterA large document printer which is able to draw high quality images on very large pieces of paper (example: 3 feet wide by 10 feet long)Used by:EngineersArchitectsMap makers