Hardware

Hardware

1. Input

   • Keyboard
     • Use: Typing text, useful shortcuts
     • Issues: The person using the keyboard have to learn how to type. When the keyboard spoils, the computer becomes almost redundant, and hard to use.
   • Scanner
     • Use: a scanner is used to input paper documents or photos into the computer.
     • Issues: Error message while scanning. Negative image while scanning
   • Graphics tablet
     • Use: referred to as a drawing tablet and pen tablet,
     • Issues: Graphics tablets are much more expensive than a mouse A great level of accuracy can be achieved
   • Barcode reader
     • Use: Electronic device that scans a barcode by shining a laser beam on it.
     • Issues: if a barcode becomes scratched or crumpled the reader may not be able to read it. +Time Savings.
   • Webcam
     • Use: A webcam is a small camera connected to a computer you can use to transmit audio and video over the Internet.
     • Issues: Able to interact with people across long distances -Discourages people to interact face-to-face
   • Microphone
     • Use: A microphone converts sound into an electrical signal.
     • Issues: Doesn't use a credit because it's used in you're computer. -The signal may be weak.
   • Light pen
     • Use: is a computer input device in the form of a light-sensitive wand used in conjunction with a computer's CRT TV set or monitor.
     • Issues: Light pens enable you to interact with the screen with pinpoint accuracy. -Because of the interaction with the screen, light pens require somewhat awkward positioning to be used efficiently.
   • Mouse
     • Use: Moving a mouse along a flat surface can move the on-screen cursor to different items on the screen.
     • Issues: requires space, A mouse works very well for navigating a graphical user interface
   • Paddle
     • Use: A paddle is a game controller with a round wheel and one or more fire buttons
     • Issues: Play with a friend, Fragile and expensive hardware
   • Touch screen
     • Use: A touchscreen is an electronic visual display that the user can control with a special stylus/pen and-or one or more fingers.
       • Issues: Having less or not buttons means that you can put more effort into having a big screen, The screens will get very dirty

2. Output

   • Monitor
     • Use: A computer monitor is an electronic device that shows pictures.
     • Issues: Expensive and Fragile, lets you watch movies
   • Printers
     • Enter text here
     • Issues: Convenience, Cost
   • DOT MATRIX PRINTER
     • Use: is a type of computer printing which uses a print head that runs back and forth
     • Issues: Inexpensive, Slow Speed
   • Speakers
     • Use: Used to listen to music from computer or Internet.
     • Issues: They include a lack of bass response.
   • Plotter
     • Use: plotters are used for producing graphics
     • Issues: they are very expensive
   • Headphones
     • Use: Listen to the Music
     • Issues: leads to use when driving so you can't concentrate fully on driving
   • DAISY WHEEL
     • Use: A type of printer that produces letter-quality type. A daisy-wheel printer works on the same principle as a ball-head typewriter.
     • Issues: They're VERY noisy, and can cause problems
   • Projector
     • Use: can take the display of a computer screen and project a large version of it onto a flat surface.
     • Issues: Image quality may not be as good when projected.