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External Hardware - Coggle Diagram
External Hardware
Input
Any data and instructions entered into a computer
Input device
Hardware that allows users to
enter data and instructions
into a computer
Keyboard
Contains keys, users press to enter data and instructions.
101 and 105 keys
NUMERIC keypad
FUNCTION keys, CTRL keys, ALT keys, and arrow keys
WINDOWS key
APPLICATION key
,
right click
TOGGLE keys
Caps lock, Num lock, Scroll lock
TYPE
Build-in laptop keyboard
Clip-on tablet keyboard
On-screen keyboard
Pointing device
device that allows a user to control a pointer on the screen
Mouse
Touchpad / Trackpad
Trackball is a pointing device with a ball on its top or side
Digital Cameras
Studio cameras
Field cameras
Point-and-shoot camera
allows users to take pictures and store them digitally
Factor
:
Resolution :
number of horizontal and vertical pixels.
Number of bits :
The more bits in a pixels, better the quality
Voice input
Input by speaking into a microphone
Video Input
process of capturing full-motion images
Digital video (DV) camera
Webcam
Scanner
a light-sensing input device that reads printed text and graphics
creates a file in memory instead of a paper copy
Reading Devices
Optical character recognition (OCR)
Reading typewritten, computer-printed, or hand-printed character
Optical mark recognition (OMR)
Read hand-drawn marks such as
small circles or rectangles
bar code reader / scanner
QR code @ 2D barcode
stores
information in both a vertical and
horizontal direction
RFID reader
reads information on the
tag@chip
via radio waves
Tracking times of runners in a marathon
Tracking location of people and other items
Managing inventory
Checking out library books
Providing access to rooms or buildings
Magnetic stripe card readers
magnetic stripe on the back of cards
Credit cards
Entertainment cards
Bank cards
Identification cards
MICR reader
magnetic ink character recognition
Bank Check
Ouput
Data that has been processed.
Output Device
Hardware that display information
Display Devices
monitors visually display text, graphics and video information
Monitor Display
CRT
Contains a cathode-ray tube – large size
Produce a small amount of electromagnetic radiation
LCD
Uses a liquid crystal display to produce images
Produce sharp images
LED
Use LED for backlight
Consume less power
Last longer, lighter, brighter
Plasma
Uses gas plasma technology
Richer colour than LCD
Laptop Display
Digital camera display
Navigation system display
Handheld game device display
Smartphone display
Printers
Nonimpact
Ink-jet ,
Photo ,
Laser ,
Thermal ,
Mobile ,
All-in-one ,
Plotters,
Large-format ,
3D ,
Impact
Dot-matrix ,
Line
audio output device
Speakers, Headphones, and Earbuds
data projector
Interactive Whiteboard