Group Assignment MKA2013 Group I

Group's Member : Elizabeth Badek Anak Munie     E20161014346

                              Nurazlin Binti Mat Rais              E20161014312

                              Regina Lee Anak Junup              E20161014399

                              Vicky Lim Chiau Jinq                 E20161014299

What is input?

Input is any data and instructions entered into the memory of a computer.

Commonly used input methods include:

       ·         Keyboard

       ·         Touch screens

Keyboard

–        It is a text base input device that allows the users to input alphabets, numbers and other characters. It consists of a set of keys mounted on the board.

Most desktop computer keyboards provided by:

·         Typing area

·         Function keys

·         Toggle key

·         Directional keys

·         Media control buttons

·         Internet control buttons

Advantage of keyboards

.1.An ergonomic keyboard has a design that reduces the chance of repetitive strain injuries.

2.       Ergonomics incorporates comfort, efficiency, and safety into the design of the workplace

 Advantage wireless keyboard

1.       Transmits data using wireless technology.

2.       Communicate with a receiver attached to a part on the system unit

        Touching Screen 

-          A touch screen is a touch-sensitive display device.

Environment that benefit from touch screens:

•  Travel information and public-transport.

-     Processing tickets is made simple with as automatic machine display.

-         Lowering operating costs for public transportation services.

•    Restaurants

                  -         Touch screens digital signages allows employees to input and process payment significantly more quickly than a standard PC interface.

•                 Industry

                               -   a touch screen is durable, able to function even when exposed to dirt and grime. This durability makes touch screens a worthwhile investment for industrial setting and potentially unclean areas.

OUTPUT DEVICES.

An output device is any peripheral that receives data from a computer, usually for display, projection, or physical reproduction. For example, an inkjet printer is an output device that can make a hard copy of any information shown on your monitor, which is another example of an output device. Monitors and printers are two of the most common output devices used with a computer..

Types of output devices

The following list contains many different output devices. For further information, select any of the listings with blue text.

• 3D Printer
• Braille embosser
• Braille reader
• Flat panel
• GPS
• Headphones
• Computer Output Microfilm (COM)
• Monitor
• Plotter
• Printer (Dot matrix printer, Inkjet printer, and Laser printer)
• Projector
• Sound card
• Speakers
• Speech-generating device (SGD)
• TV
• Video card

A computer can still work without an output device. However, without an output device, you'd have no way of determining what the computer is doing, if there are errors, or if it needs additional input. For example, you can disconnect your monitor from your computer, and it will still function, but it's not going to be very useful.

PRINTERS

A printer is an external hardware output device that takes the electronic data stored on a computer or other device and generates a hard copy of it. Printers are one of the most popular computer peripherals and are commonly used to print text and photos.

       Types of printers.

       Below is a list of all the different types of computer printers. Today, the most common printers used  with a computer are Inkjet and Laser printers.

•          3D printer
•          All-in-one (AIO) printer
•          Dot matrix printer
•          Inkjet printer
•          Laser printer
•          LED printer
•          Multifunction printer (MFP)
•          Plotter
•          Thermal printer

          ADVANTAGES.

    ~ enables us to get computer output on paper. It is one of the most popular computer output      devices we often use to get information on paper - called hard copy.

    ~ all-in-one printer is a device that prints, scans, copies and sometimes faxes. Also known as the  multifunction printer. It helps in converting hand drawn pictures into an electronic format, for  example, line drawings, art, logos, signatures and diagrams.

    ~ photo printer produces in lab quality pictures. Pictbridge allows us to print photos directly from a digital camera (connects directly via through a USB cable without a PC).

~    ink-jet printer helps us to print project either color or black and white. Speed is measured by the number of pages per minute (ppm) it can print.

   ~ mobile printer allows a mobile user to print from a mobile device.

~   3D printing has been used to create car parts, smartphone cases, fashion accessories, medical equipment and artificial organs.

                               MONITOR

Monitors, commonly called as Visual Display Unit (VDU), are the main output device of a computer. It forms images from tiny dots, called pixels that are arranged in a rectangular form. The sharpness of the image depends upon the number of pixels.

There are two kinds of viewing screen used for monitors.

•         Cathode-Ray Tube (CRT)
•          Flat-Panel Display 

Cathode-Ray Tube (CRT) Monitor 

      The CRT display is made up of small picture elements called pixels. The smaller the pixels, the better the image clarity or resolution. It takes more than one illuminated pixel to form a whole character, such as the letter ‘e’ in the word help.

     A finite number of characters can be displayed on a screen at once. The screen can be divided into a series of character boxes - fixed location on the screen where a standard character can be placed. Most screens are capable of displaying 80 characters of data horizontally and 25 lines vertically.

     There are some disadvantages of CRT −

•         Large in Size
•         High power consumption
• 
  

                                                        Flat-Panel Display Monitor

The flat-panel display refers to a class of video devices that have reduced volume, weight and power requirement in comparison to the CRT. You can hang them on walls or wear them on your wrists. Current uses of flat-panel displays include calculators, video games, monitors, laptop computer, and graphics display.

The flat-panel display is divided into two categories −

·      Emissive Displays − Emissive displays are devices that convert electrical energy into light. For example, plasma panel and LED (Light-Emitting Diodes).

·      Non-Emissive Displays − Non-emissive displays use optical effects to convert sunlight or light from some other source into graphics patterns. For example, LCD (Liquid-Crystal Device).

         ADVANTAGES.

       ~  most important parts of your pc which displays the output from the computer. Text and graphics video modes are the most basic ones displayed by a monitor.

      ~ have display functions that include powering it on and off, controlling brightness, contrast and position, among others.

      ~ A computer monitor is a display adapter that displays information processed by the computer's video card.

      ~ Dual monitor is good for large projections, where the user can play movies or videos on his monitor, and a copy is displayed on a larger projection for a room full of people.

      ~ All monitors have a resolution type that it uses to display images.