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

Hardware information.

Extracts from this document...

Introduction

Keyboard The Keyboard is the standard data input and operator control device for a computer. It consists of the standard QWERTY layout with a numeric keypad and additional function keys for control purposes. Mouse The Mouse is a popular input device. You move it across the desk and its movement is shown on the screen by a marker known as a 'cursor' . You will need to click the buttons at the top of the mouse to select an option. Printer You can print out information that is in the computer onto paper. By printing you create what is known as a 'hard copy'. ...read more.

Middle

Thermal printers are widely used in battery powered equipment such as portable calculators. * Non-impact -Laser Printers use a laser beam and dry powdered ink to produce a fine dot matrix pattern. This method of printing can generate about 4 pages of A4 paper per minute. The standard of print is very good and laser printers can also produce very good quality printed graphic images too. This is the type of printed I used. Floppy Disk A floppy disk is a thin magnetic-coated disk contained in a flexible or semi-rigid protective jacket. Data is stored in tracks and sectors. A floppy disk is a thin magnetic-coated disk contained in a flexible or semi-rigid protective jacket. ...read more.

Conclusion

Most monitors have a 4:3 width to height ratio. Scanners Scanners allow information such as a photo or text to be input into a computer. Scanners are usually either A4 size (flatbed), as shown below, or hand-held to scan a much smaller area. If text is to be scanned, you would use an Optical Character Recognition (OCR) program to recognise the printed text and then convert it to a digital text file that can be accessed using a computer. File servers A file server is a computer used for managing the files on a network. Some file servers are dedicated file servers, which means they spend all there time managing the network. A file server is used to store both programs and data, and it is a much more powerful computer than the others that are connected to it. Christina Black Christina Black ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Computer Science 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 AS and A Level Computer Science essays

  1. Investigating Visual Programs

    Standard Debugging Techniques Standard Debugging Techniques include: * Using print statements to view the progress of a program the errors Commenting out sections of the code to isolate VB Debugger * Break Points can be used to halt execution at specific points * The debug mode can be used to

  2. According to John Searle, strong analytical devices that have Artificial Intelligence can, at most, ...

    . 'answers to the questions'"; "the set of rules in English . . . they call 'the program'": you yourself know none of this. Nevertheless, you "get so good at following the instructions" that "from the point of view of someone outside the room" your responses are "absolutely indistinguishable from those of Chinese speakers."

  1. The impact of the availability of electric information on individuals and society

    The most popular ones are e-mail; Skype; MSN; Facebook; Twitter; YouTube; telephones; websites of firms; TV; podcasts and mails. Increased options of communication are good for both companies and its clients because they can contact each other quicker. Also a client might find out the price lists, delivery options, warranty

  2. Describe the hardware and software used to create and edit graphic images and compare ...

    Every digital cameras on the market use a flash card to store the pictures. There are many different cards that can be used that have different sizes and connections. Some examples include, SD, Memory stick, XD and SM. Cameras that offer WIFI connection to a network and now also available.

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