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

designing an information system

Extracts from this document...


Report 3 AO1b When designing an information system you first need to consider the output. The output depends on the type of job. If a very basic job is needed you would use a monitor and a printer. The basic input devices are the mouse and the keyboard. Basic output devices are the monitor, the speakers and the printer. I need to consider alternatives so that I can get the best out of my system. The purpose of an input device is to input data or information so it can be converted into the system. Input devices must be fast and accurate. The cost of the product must be reasonably cheap. ...read more.


There are two main faults that could be due to the keyboard. The Transposition Error Around 70% of errors are transposition errors. This occurs when two letters (or more commonly) numbers are switched with each other. For example, instead of dog a mistake could be dgo or (more commonly) 2345 could be 2435. The Transcription Error This error occurs when the person misreads or mistypes data. This can be caused by reading wrong e.g. 5 = s or 0 = O or the persons bad handwriting. These generally can be corrected due to tools such as grammar checker and spell checker but they don't detect all errors. Proof reading and double checking will insure that mistakes are corrected. ...read more.


Output An output device takes data from the computer and displays it in usually recognizable data for the user to read on screen or paper. There is a range of output devices available for use today, these include: Laser Printers Inkjet Printers Monitor Speakers The output devices that have been available to me are: A 15 inch monitor, a black and white laser printer, an inkjet printer and a colour laser printer. The lasers are very good quality and very fast. Black and white is fine for the payslips. Colour laser printer cartridges are very expensive so with so many employees there is no need for colour. A wider monitor like 17 or even 19 inch monitor would have been useful as I would be able to see more information. ...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.

    for printing the work that you done on the computer into paper. The advantage of a laser printer is that they are very quiet and produce very high quality print. The disadvantage of the laser printer is that the cost of the laser printer is a lot more expensive than other printers such as inkjet and Dot-matrix.

  2. Choosing the best harware for my system.

    Also the computer comes with hard disk fixed and it can be difficult to transfer data to another computer. (CPU) Intel Core Duo Processor(2 GHz) �200 This is the brain of the computer. In the CPU all of the calculation and sorting out are done here.

  1. Choosing hardware and input devices.

    However it is more complicated than Microsoft publisher so it will be hard to use. Website designers can make changes to the design of a website simply by editing the Dream Weaver template files. It is much more complicated than Microsoft word so it'll be hard to use.

  2. Hardware Choices and Operating System.

    With a 3 in 1 printer more space is taken than there would with a single function printer. Daewoo international TFT monitor C15DIGB10 Refurbished 15" HD Ready LCD TV This HD TV is an output device. It works the same as a normal monitor does.

  1. ICT Report 3B

    Possessing the pictures would also be worry-free as he would be without the fear of the pictures fading or losing their original quality due to a digital backup being stored. Marcus' needs are effortlessly met with his digital cameras he is able record unique moments in his life for years to come merely by pressing a button.

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

    They come with every computer. This means you do not have to buy one when you buy a computer. The hard disk comes fixed inside the computer and can be difficult to transfer data to another computer. Alternatives In the following table I will give an alternative device to the hardware listed in the above table.

  1. The company that I will be providing the ICT system is called Mags Estate ...

    They will also need to print out records of staff and clients. They will also need to print out property information sheet so that they can advertise their property. They will also have to print out there e-mail they receive form clients and form other branches.

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

    The system decreases the purchased item from the stock and then also notifies the company whether they need to restock on the item. It also lets the company know how many of the item they need to restock on. It does this by analysing how fast the previous stock of

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