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Input And Output Devices Of Computer Assignment Introduction

Computer Input & Output Devices

by Kimberly H. 06/14/2013

Computer Input & Output Devices

by Kimberly H.

1. Examples of Output Devices: Monitor, printer, scanner, speakers, headphones

2. Input Computer Devices

2.1. Benefits of input devices include the ability to enter data to be stored for future retreival, the ability to make photo quality printouts and the abiliyt to use pointing devices equipped with assistive techonogy for sutdents with disabiliteis.

2.1.1. Challenges that may relate to input devices aret compuer monitor screen resolution and the use of keyboards for students with movement disabilities. The use of assistive technology would help to accommodate students who cannot use keyboards and monitors in the classroom

2.2. Application: Keyboards and mice would be used in the classroom along with computes to allow students to enter data into the computer to complete assignments as required

3. Examples of Input Devices include: Keyboards, scanners, trackball, mouse, digital media resources

3.1. Trackballs could be used in the classroom for students with disabilites or those students requiring the use of trackball due to hand movement or cordination disabiliteies.

4. Output Computer Devices

4.1. Output devices are used to communicate information or data out of the computer to the user. Output devices work to link visual images and auditory information to the user

4.2. The benefits of output devices include the communication of data between the user and the computer, the abiliyt for the user to see visual images and hear sound from the computer. Input devices would allow student in the classroom to hear music being played as part of an assignment. Output devices may also alow students to print data.

4.3. Challenges with output devices may include the inability for students with disabilities to use a keyboard or trackball. Thee use of a microphone may be an appropriate assistive technology device. Another challenge may be the inability to see touch screens or montors. Voice applications could provide asstance for students who may be blind or have difficulty seeing text on a computer monitor

5. Digital media sources such as a camera could be used for students to upload pictures on the computer to provide visuals and graphics for projects and assignmen

The computer keyboard is used to enter text information into the computer, as when you type the contents of a report. The keyboard can also be used to type commands directing the computer to perform certain actions. Commands are typically chosen from an on-screen menu using a mouse, but there are often keyboard shortcuts for giving these same commands.

In addition to the keys of the main keyboard (used for typing text), keyboards usually also have a numeric keypad (for entering numerical data efficiently), a bank of editing keys (used in text editing operations), and a row of function keys along the top (to easily invoke certain program functions). Laptop computers, which don’t have room for large keyboards, often include a “fn” key so that other keys can perform double duty (such as having a numeric keypad function embedded within the main keyboard keys).

Improper use or positioning of a keyboard can lead to repetitive-stress injuries. Some ergonomic keyboards are designed with angled arrangements of keys and with built-in wrist rests that can minimize your risk of RSIs.

Most keyboards attach to the PC via a PS/2 connector or USB port (newer). Older Macintosh computers used an ABD connector, but for several years now all Mac keyboards have connected using USB.

Pointing Devices

The graphical user interfaces (GUIs) in use today require some kind of device for positioning the on-screen cursor. Typical pointing devices are: mouse, trackball, touch pad, trackpoint, graphics tablet, joystick, and touch screen.

Pointing devices, such as a mouse, connected to the PC via a serial ports (old), PS/2 mouse port (newer), or USB port (newest). Older Macs used ADB to connect their mice, but all recent Macs use USB (usually to a USB port right on the USB keyboard).


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