LIST OF COMPUTER INPUT DEVICES, OUTPUT DEVICES AND BOTH INPUT OUTPUT DEVICES.

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LIST OF COMPUTER INPUT DEVICES, OUTPUT DEVICES AND BOTH INPUT OUTPUT DEVICES.
 Input Devices:
An input device converts incoming data and instructions into a pattern of electrical signals in binary code that are comprehensible to a digital computer. [1] they include:
1.      Graphics Tablets
2.      Cameras
3.      Video Capture Hardware
4.      Trackballs
5.      Barcode reader
6.      Digital camera
7.      Gamepad
8.      Joystick
9.      Keyboard
10.  Microphone
11.  MIDI keyboard
12.  Mouse (pointing device)
13.  Scanner
14.  Webcam
15.  Touchpads
16.  Pen Input
17.  Microphone
18.  Electronic Whiteboard
19.  OMR
20.  OCR
21.  Punch card reader
22.  MICR (Magnetic Ink character reader)
23.  Magnetic Tape Drive[2]
Output  Devices:
An output device reverses the process, translating the digitized signals into a form intelligible to the user. At one time punched-card and paper-tape readers were extensively used for inputting, but these have now been supplanted by more efficient devices.[3]
  1. Monitor (LED, LCD, CRT etc)
  2. Printers (all types)
  3. Plotters
  4. Projector
  5. LCD Projection Panels
  6. Computer Output Microfilm (COM)
  7. Speaker(s)
  8. Head Phone
  9. Visual Display Unit
  10. Film Recorder
  11. Microfiche[4]

Both Input–Output Devices:
  1. Modems
  2. Network cards
  3. Touch Screen
4. Headsets (Headset consists of Speakers and Microphone. Speaker act Output Device and      microphone act as Input device)
5. Facsimile (FAX)  (It has scanner to scan the document and also have printer to Print the  document)
     6.Audio Cards / Sound Card[5]

PARAPHERALS OF A COMPUTER
Definition of peripheral device
A peripheral device is an internal or external device that connects directly to a computer but does not contribute to the computer's primary function, such as computing. It helps end users access and use the functionalities of a computer.[6]  It can also be said to be a computer device, such as a keyboard or printer, that is not part of the essential computer (i.e., the memory and microprocessor). These auxiliary devices are intended to be connected to the computer and used.[7]
A peripheral device provides input/output (I/O) functions for a computer and serves as an auxiliary computer device without computing-intensive functionality. Peripheral devices connect with a computer through several I/O interfaces, such as communications (COM), Universal Serial Bus (USB) and serial ports. [8]

Types of Peripheral Devices 
Peripheral devices can be external or internal.
  • Examples of external peripherals include mouse, keyboard, printer, monitor, external Zip drive or scanner.
  • Examples of internal peripherals include CD-ROM drive, CD-R drive or internal modem.

Peripheral devices include the following:
  • Mouse
  • Keyboard
  • Printer
  • Webcam
  • Printer
  • Scanner
  • External drives
  • Graphics cards
  • CD-ROM[9]

[5] ibid
[6] Techopedia. https://www.techopedia.com/definition/2252/peripheral-device.
[8] Techopedia. https://www.techopedia.com/definition/2252/peripheral-device.
[9] Techopedia. https://www.techopedia.com/definition/2252/peripheral-device.



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