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AS and A Level: Information Systems and Communication
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Half Duplex -this is when two devices can communicate through the same lane but not at the same time, for example when a computer is sending data to the USB drive then at that moment of transmission the USB drive can not send anything back until the transmission from the computer is finished. Duplex -this is when communication can take place from both ends at the same time, so in other words, you can send and receive at the same time, for example, mobile phones, when you call someone, both callers can speak at the same time.
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A workstation is intended to be used by one person at a time although they run multi-user operating systems. Also on a computer network used in a business for example, the computers used by the users are also known as workstations. Wireless Devices Wireless Devices in a network are designed to communicate over a network using radio waves instead of cables. This can be in the form of a wireless router (a router which is capable of wired and wireless communication) and a NIC in a computer which can send and receive wireless data. Hubs, Switches and Bridges Hubs A hub is a device which connects multiple twisted pair or fibre optic Ethernet connections together.
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They are planning to set up a networking academy (rather like the Cisco Network Academy) and create related qualifications. The project manager has asked me to prepare some learning materials for 'Chapter 1' of the online course. Chapter 1 is entitled 'The Theory of Data Communications'. The chapter is subdivided into a number of sections. The materials must be produced in the form of a Word document. Chapter 1 Chapter 1a Identify and explain types of communication devices Communications devices are electronic hardware which communicates with each other to perform specific tasks. The technologies that are used to communicate are data terminal equipment (DTE)
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'how do you build a website' this will return a list of reference related to building a website which I feel is good. I'm going to research the same topic as I did in the other two search engines and see what results I get. The result from this search engine is that I received 4,477,000 hits relating to house price data. Comparing my results Search Engine Number of Hits Google (Text base search) 125,000,000 Live search (Directory search) 67,200,000 Ask.com (Meta search)
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* Individual reports for each pupil must be available with minimal effort. In order to try and meet this objective I incorporated a series of complex Look_Up, and IF functions. Through including all these functions I have been able to implement a method which brings up all the students marks, calculates grades based on these individual marks, counts total days absent and also shows the report notes issued for that pupil. This report is composed by simply entering the student's unique admission number.
- Word count: 1861
Investigation into proposed new system For the proposed system to work the financial return must outweigh the cost. Fact finding information I will need to look into is some documentation. First I would need to look at the profits from the wholesale area and the profits from retail area. This would establish that the specialist products are making more money. I would also like the information on how much it cost to rent out premises and how much will it cost to produce a e commerce site. If ABC Bakeries were going to open an e commerce site how many people would take to maintain the running of it, how much would it cost?
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To design this system I have had to acquire skills in using excel. These consist of making and designing tables, writing macro codes and writing formulas. When building the system I had to take certain things into consideration when it came to making the application aesthetically appealing and intuitive. They are as follows: * All gridlines, sheet tabs, column and row table should be removed so that the final product looks as professional as possible without the look of an excel spreadsheet.
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Sainsbury, Somerfield and Morrison's are UK largest supermarkets in UK, all businesses are trying to promote new products, and there aim is to make profit. Website and leaflets are ways to promote there product and company, also advertise there offers and goods. Advantages online shopping � It is very easy and fun to shop online � You can compare a variety of different products and see which is cheaper. � It is very quick to order the products instead of going out to a lot of different shops and buying clothes.
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how organisations now communicate individuals and society and the affect on those who do not have (or want) access to ICT.
For disability people in 1995 there was a new era of accessibility. The DDA (Disability Discrimination Act) was passed, stating that: "It's unlawful for a service provider to discriminate against a disabled person by refusing to provide any service which it provides to members of the public'. but there are other disable people that are not phsycally able to cope with the equirpment for example people that have parkinson disease and not able to use a keyboards, mouse etc... Internet users who have impaired vision may utilize a screen reader, which reads the content of the web page, or rather the HTML code of the page, back to them.
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within the Microsoft NT family of operating systems created by Microsoft that provides detailed information about the computer performance and allows you to see all running applications, as well as the processes and CPU usage, also memory information, network activity and statistics, logged-in users, and system services. The Task Manager can also be used to set process priorities, forcibly stop processes, and shut down, restart, stand by or log off from Windows. The task manager is commonly used when terminating an application that has encountered some problems whilst in the process of operation, making it difficult for the user to end the task.
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Pascal, designed in 1970, is an important programming language as it uses structured programming; Pascal originally is solely a procedural based language although nowadays, Pascal now has various data structuring services. The original Pascal language was created to aid people with their learning of writing programs, now Pascal can still be used for educational purposes and software development. Another type of programming language, scripting, are programming languages that manage applications (programs designed to perform specific tasks). Unlike procedural language, scripts can run applications directly from what is called a source code, a form of human-readable instructions that consist of a program.
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One popular example of an IM service is MSN Messenger. Images, files and other forms of electronic media can be transferred using instant massaging. Chat covers a range of scenarios across a range of different networks including: * internet relay chat (IRC)- an open protocol not controlled by any one provider * web- based chat offered by ISP (e.g. BT or Freeserve) or portals such as yahoo or MSN * web- based chat offered by anyone with a website- often used to solve problems on a specific topic or leisure * online role-play environments * chat rooms using SMS on
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Within the site there is a hyperlink at the bottom of the homepage which takes you to a different site of theirs which has more then there original site and has a better look with brighter background and more information on the website. Navigation: The site is very plain and basic and not much hyperlinks or menus but although the hyperlinks are usually in the same place every time you click on them, the links are always just under the title and are always there throughout the website.
- Word count: 800
There have been many health promotions aimed at people to try and eat 5 a day; NHS is one of the leading organizations that promote this. This screen shot I obtained from the NHS website, when navigating the website I found that most of its target audience is of the younger generation, it provides games that online users can play and try to influence them into adding 5 a day. The aspect that I like about this promotion is that it provides a lot of choice on what to look at.
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We have better networks allowing us to approach anyone from anywhere. Emailing is another source we use to communicate with the people who don't live near us or in a different country. We have infrared and the radio interactions controlled by us. We now have satallites in the space which is also helping us to know the informations around the world. Everyone has got used to these accesses and now most people have credit cards and debit cards which makes life simpler for them as they can withdraw money from the ATM machines or pay the bills easily so they don't have to worry about the transactions all of these tasks are done by just a fairly small card through the phones or straight away also its quite secure or safe.
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This is slower than parallel but is suited to long distances. The company uses serial transmission to communicate with their brokers all around the world. Task 2 Transmission Medium Description/ Features Situation Where Used Explanation of Suitability Thin wire coaxial cable This is a copper based cable; there is a core of copper in the middle with a metal shielding and an outer sleeve, the metal shielding reduces interference. There are two types of coaxial cable, these are thick and thin wire. Thick wire is rigid and not easy to work with, this used to be used for large computing facilities (mainframes).
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Additionally, FAT16 limits file names to eight characters plus a three-character extension. The maximum partition size for FAT16 is 4GB. FAT16 is the only file system accessible in all versions of Windows and DOS, and is the only file system usable FAT32: FAT32 stores files more efficiently than FAT16 and has support for long filenames. FAT32 drives can be read by every version of Windows. The maximum partition size for FAT32 is very large, although there is a 32GB limit in Windows XP. NTFS: The original version of NTFS was introduced with Windows NT.
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To do this one, you need to know your friends e-mail address. E-mailing is quicker, easier and it doesn't cost you anything. E-mail also has disadvantages. You can get e-mail from someone who you don't know and your computer can get different types of viruses. It also takes time to get the reply for the message. NEWSGROUPS Newsgroup is collection of messages about a particular topic that are posted to a news server by members. There are thousands of newsgroups covering a huge range of subjects.
- Word count: 636
Organisational chart The following organizational chart shows the individuals involved. Analysis The are several problems and advantages with the current system * It is well organised for a paper based systems, split into several folders one for each subject of data collected (i.e. Pupils, staff, venues. * But this means that information is spread out, and hard to find, also if one file goes missing the whole set of information for that subject is lost. * There is no link between the files, i.e.
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The font used on the sheet is Arial with the font size 10 and the colour is grey. The font of the main title is Lucida Calligraphy. The macros on this page are:- - The computer logo which will take the user to the main menu - A command button 'Quote' which will take the user to the quote sheet - - A command button 'Invoice' which will take the user to the invoice sheet - A command button 'Customers' which will take the user to the Customer sheet The background on this sheet will be an image, accessed from the company files, named 'Harmless Smoke'.
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2.0 Methodology The information for completing this report was found from the internet and in textbooks that I have looked at. I have also included notes from my teacher that include the relevant information on communication. I have found some notes on communication methods from the textbook, Applied ICT, AS Level for OCR by Maggie Banks. I used the following websites: - http://en.wikipedia.org/wiki/Communication http://www.buzzle.com/articles/types-of-communication.html http://www.coursework.info/GCSE/Information___Communication_Technology/Communications/There_are_five_types_of_communication_Wr_L80534.html http://www.cemca.org/EMHandbook/Section2.pdf http://www.ncrtec.org/pd/lwtres/aadodtt.pdf http://fcit.usf.edu/DISTANCE/chap9.htm http://www.answers.com/topic/radio 3.0 Findings 3.1 Types of Information There are many different types of information that we can convey.
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The pages will be listed by the number of hits they have received, with the most popular first. If you enter two or more words, the search engine may return pages that contain the words in a different order, or pages with the words in different order, or pages that contain only some of the word of the words. For example, a search for plant house returned page about houseplants, several references to House of Commons/ Lords proceedings that mentioned plant, and even if the page on the history of astrology where the author's surname was Plant and the text included the word house.
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It also starts with "dear" and ends with "Yours sincerely". The manager of the new branch has her signature on and the Halifax main address at the bottom of the paper. The small font text at the bottom of the page tells us that the letter is formal as it's got the address of the main Halifax building. Good and bad points: There are some good points about the letter like the logo of Halifax which's been placed in a place that would suit the layout of the page.
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This letter gets straight to the point is very easy to understand and well spaced. This letter also looks very authentic as it has the letterhead and is signed. Clearly Sharkey's a small firm has spent lots of time creating this letter and preparing the headed paper. The letter is printed on plain white A4 paper and is printed in B&W. However this letter is still very basic compared with the other letter I received from David Silver Spares. The letter I received from David Silver Spares is much more advanced as expected due to the size of this company.
- Word count: 1152