Hardware: Input/output and I/O Devices Maggie Russo Morgan Bernstein
Input/output (I/O) Input is how data is received into a computer system which results in outputthat is displayed to the user. Multi-purpose devices: UPS device for signatures
Input Devices The input device captures data and enters it into the computer system. Source Data Automation General-Purpose and Special-Purpose
General-Purpose Input Device General-purpose input devices can be used in multiple computing activities. Keyboard QWERTY Pointing Devices select items displayed on a screen.
General-Purpose Input Devices Cont’d Users can use finger or stylus to directly select objects on a screen with the use of Touch Screens. Users can use multiple fingers to select objects with Multitouch Displays.
Special-Purpose Input Devices Special-purpose input devices are used in specific computing activities. Game controllers and joysticks, webcams, hand held scanners…
Special-Purpose Input Devices Cont’d Magnetic ink character recognition (MICR) Optical character recognition (OCR) Point-of-sale (POS) devices Optical mark recognition (OMR) Scantron reader
Output Devices Output devices allow users to view the results of the input. Historically visual and audio Virtual reality systems, new wave of output Displays, Printers, Speakers
Video Card Video card/graphic cards translates binary data from the CPU and turns it into a picture that video users can see. Graphics Processing Unit (GPU)
Video Card Cont’d Desktop systems Graphics Processing Unit (GPU) Notebook systems Integrated Graphics Processor
Display A display allows users to view the output on a screen. Display screens = monitors Display Options: High definition (HDTV)- 2xs the resolution 3D displays- home systems LCD projectors
Display Technologies Cathode ray tube (CRT) display Reads electron beams across a fluorescent screen. Liquid crystal display (LCD) Uses liquid crystals to display images on a backlit screen Plasma Display Uses plasma gas to create light
Display Technologies Cont’d Light emitting diode (LED) display Uses LEDs to provide backlight Green Technology Electronic Paper (e-paper) Uses electric charges to display the image Kindle
Printer Printers create “hard copy” output Pages printed per minute (PPM) Types of Printers: Laser printer Ink Jet printer Photo printers Multifunction printers Plotters 3D printer
Audio and Special Media Output Audio and Special Media Output devices provide output other than sight. Sounds systems: CD/MP3 music players DVD/Blu-ray disk players Multimedia and gaming enthusiasts Surround sound with subwoofers
Audio and Special Media Output Cont’d Screen-reader programs for vision impaired JAWS Haptic Output Vibrations The Scent Dome from TriSenx Olfactory-directed output Edible Output
Expansion Expansions enable computers to interact with various external devices. External devices = peripherals Ports connect to peripherals Universal Serial Bus (USB) USB 3.0 is the fastest
Expansion Cont’d Expansion Cardis used for specialty peripheral devices Expansion Slots are located in motherboard Wireless technologies Bluetooth
Innovative I/O Technologies There are endless possibilities for new I/O technologies USB Mini Fridge Mini USB Monitor USB Lamp Any Questions?