• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month
Page
  1. 1
    1
  2. 2
    2
  3. 3
    3
  4. 4
    4
  5. 5
    5
  6. 6
    6
  7. 7
    7
  8. 8
    8
  9. 9
    9
  10. 10
    10

the role of ict

Extracts from this document...

Introduction

Components of an Information System Difference between Hardware and Software > Hardware: � Physical equipment that makes up a computer system � If you can kick it or take an axe to it it is hardware. > Software: � Programs, routines and procedures (together with their associated documentation) which can be run on a computer system. It is important not to confuse the media used to transport software with software itself � A CD is a piece of hardware which you can touch and kick and it may contain software which you cannot touch. � The CD is not software it is hardware Examples of Hardware � Central Processor � Peripherals - these are hardware devices which are attached to the central processor: " They can be classified into four types: Input: - Keyboard, Mouse, Scanner Output: - Monitor, Speakers Backing Storage: - Hard Disk, Floppy Disk Drive Communications: - Modem Hardware & Software Standardisation In general, hardware produced by one company will not be compatible with that produced by another Hardware: � A POS terminal by IBM could not plug into an ICL system Software: � A program written for the Mac would not run on a PC Software standardisation � Output may appear different: " E.g. ...read more.

Middle

� Can be used to signal to hearing impaired people Buzzers � Gives confirmatory actions " Set sounds to events in Windows " Bar Codes beep to indicate successful entry Printers Three main types of printers: � Impact Printers � Inkjet Printers � Laser Printers Choice of: � Colour � Black and White Selection of different resolutions Impact Printers * Physical Connection between print head and paper * Noisy * Slow (chain printers can be very fast) * Cheap to run * Colour or Black and White * Low Resolution * Can do Carbon Copies * Print on multi part paper InkJet Printers � Ink is fired at the page and the number of DPI can be very high � High resolution � Colour or black and white � High running costs � Faster than a dot matrix but not as fast as laser � Can not print carbon copies Laser Printers � High Quality Images � Fast Printing � Colour or Black and White (Colour is expensive) � Medium to low running costs � Excellent Quality � Need special transparencies to produce OHPs � Cannot do Carbon Copies Monitor (VDU) > Most common Output device > Range of Sizes - standard is 17", but 21" or greater is available for specialists: ...read more.

Conclusion

software Generic > These are off-the-shelf packages which do not meet a specific purpose but serve a general purpose > For example: � Microsoft Office and components � Corel Suite � Lotus Suite " Word Processors, Spreadsheets, Databases > The software can then be customised to produce the result you want. Tailor-Made Either: � Bespoke " The application is written for the purpose by a software house Disads: Time consuming, expensive, limited support/books. Ads: Fulfils purpose, individual support Or: � Customisation " A generic application is customised using a programming language Disads: Need to purchase the application and you get more than required. Ads: Cheaper, lots of support. Off-the-Shelf > Purchasing solutions from a shop without alteration > For example: � SAGE payroll package � Heritage Library Database > The idea is to be able to open the package and run the software which delivers a specific solution > Can be generic (word processors) Programming Languages > There are a variety of programming languages available. > Each language has a specific purpose � FORTRAN - Formula Translation " Mathematical and Scientific � COBOL - Common Business Orientated Language " Business, Data Processing > Languages can also be used to enhance the application: � Use of VBA to write macros, etc 1 g.kinyanjui.2004 ...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 Information Systems and Communication 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 Information Systems and Communication essays

  1. Marked by a teacher

    Database Coursework on a Vehicle Rental System: Analysis

    5 star(s)

    Processes: - Any records of customers that have been inactive for ten years will automatically be placed into customer archive file 8. Archive form for staff details Inputs: - Any staff record Data Collection: The data is automatically placed into an archive staff file when a member of staff is sacked or resigns.

  2. Marked by a teacher

    I have been asked to create an ICT solution for a local events and ...

    This will improve efficiency as all of the files will be located on one system, rather than on a paper based filing system. Also he will be able to keep extensive records of all of the company?s information in an easily accessible and affordable location- on the system.

  1. Unit 21: Working with ICT Hardware and Equipment

    * Equipment going missing - this again can happen more frequently in the centres as people can come in and take items such as the keyboard or mouse.

  2. ict as level coursework

    When I click print on the invoice, it does not work. Ensure that the printer and computer are connected properly. If wires are missing or have not been connected then this will cause connection problems. Try to print again after checking the wires and if there are still problems restart the system.

  1. Threats to Data

    7. Kept secure. Transactional website's "Consumer Terms of Sale" clearly states the following under 'Data Protection': "The Supplier will take all reasonable precautions to keep the details of your order and payment secure but unless the Supplier is negligent, the Supplier will not be liable for unauthorised access to information supplied by you."

  2. A2 ICT CouseWork

    Due to the difference of each point, I have decided to categorise each point differently depending on what the point refers to in the website. The two categories are qualitative and Quantitative, Quantitative points are aspects of the website which have to be included and can be judged by one

  1. Unit 5 - Communications Technology

    Routers examine each packet, remove the destination address and use this to route the packet from one LAN to another. Routers pass information between each other and build their own routing tables that contain information about the best routes to various destinations through a compound network of many LANs.

  2. Communication & Employability Skills for IT. OCR Cambridge Technicals Unit 1 LO1-P1

    This act helps them achieve equal opportunities at work and in the outside world. This act shows different ways in which is unlawful to treat someone, such as discrimination. Examples could be a company doesn?t employ a foreign national or paying someone less compared to someone doing the same job.

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