• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Different Types of Output Devices.

Extracts from this document...

Introduction

Monitors The monitor, screen or visual display unit (VDU) is the most common computer output device. Popular screen sizes are 15 inches (38 cm) and 17 inches (43 cm). Larger monitors make working at a computer easier on the yes and are essential for use in desktop publishing and design work. Cathode ray tubes Traditional computer monitors are similar to televisions. They use cathode ray tubes (CRTs) which are large and heavy, but can produce high-quality displays. Flat panel displays The screen on notebook computers and flat panel monitors use LCD or TFT displays: LCD (Liquid Crystal Display) These use tiny crystals which block the light from passing through them. ...read more.

Middle

Laser printers Laser printers work in a similar way to photocopiers. They are very popular, particularly where large quantities of mono (black) printing are required. They are quite, fast and economical to run. A 12- page -per-minute printer can be purchased for about �150. Color laser printers are becoming more popular as their prices fall, but ink-jet printers are also a popular choice for color work. Ink-jet printers Ink-jet and bubble-jet printers are relatively inexpensive and produce high-quality black and color printing. This makes them a popular choice for home and school use. The printing speed is slower than a laser printer so, for many businesses where large volumes of printing are required, the laser printer is more suitable. ...read more.

Conclusion

Sound/voice Computers can be output both music and speech to speakers. Synthesized speech output, generated from a computer program, can be particularly useful for blind users, where passages of text or figures from a spreadsheet are spoken. One common example of speech synthesis is used by BT for their directory enquiry service. When you dial 192, the operator searches a computer database and locates the number. A computer then reads this number out to you by saying, "the number you requires..." Control applications Computers are also able to output data to devices that control machines and processes. Actuators Mechanical devices that generate movement are called actuators. Computer-controlled actuators can automate the operation of machines and are based on three types of mechanism: * Hydraulics * Pneumatics * motors ?? ?? ?? ?? ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Hardware section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Hardware essays

  1. Computer Hardware, uses, advantages and disadvantages.

    To correct errors in my work I used spelling and grammar checker to correct the mistakes and rotated the image/text back to its original form if it had been scanned upside down. To prevent errors from happening in my work I made sure that the paper was put the right

  2. Ict - Unit 2B

    All the departments and the objectives of the departments are linked with the company and its objectives. Alternative device or technology: An alternative device/technology for their internet connection would be a faster internet connection which blocks pop-ups so they don't waste time on unnecessary things and also it would allow

  1. Choosing hardware and input devices.

    Application Software Application software is computer software designed to help the user perform a particular task There are two main types of software: CLI and GUI as shown below. 1. CLI -Command Line Interface 2. GUI - Graphical User Interface Type of O.S The Main Functions Advantages Disadvantages GUI The

  2. GCSE ICT - Imput devices.

    that computer station would be available to opened, read, viewed and edit the file unless it has been saved as a password protected file. This means that any user could look at another users documents, so long as they are saved on the hard drive of the computer and there is no password.

  1. I will describe the hardware I have used in my system, the way they ...

    the subscription could go on and on for ever if the expiry date is not entered correctly. The way it can be prevented is that recheck if the date is there and it is entered correctly with the correct format.

  2. It design

    To create this website I will also be using the optical mouse as recommended for the company because of its manoeuvrability and efficiency. Output Data The output data is the information that will be coming out of the website and what it produces or what you can see from it.

  1. ICT & Special Needs This essay focuses on the way that Mr Glassey uses ...

    with either stick-on Braille dots or Braille keys although this would not allow for Grade 2 Braille. If he wanted a cheaper alternative to offer the same level of functionally which is but less ergonomic he could use the Portset Braille Keyboard.

  2. The organisation I have chosen to investigate is Europes leading specialist retailer of computer ...

    For example David Beckham would be used in their marketing if he was recently under the media limelight. The company GAME uses the EPOS (Electronic Point of Sale) system like most other companies to deal with the sales. This system reads the barcode on the item being purchased and then identifies how many of the item is still in stock.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work