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Sumedh's Classwork

Group Project Review

posted Oct 18, 2010, 3:58 PM by Unknown user

Our group project was done very well, however there are still some areas in which we could improve. Our website could look a bit more professional. Our logo was shown to be a bit stereotypical and maybe we could have shown more creativity. Our pages all contained a lot of text and even though they may have fitr the criteria, it further influences the un-professionalism. Other than this, it is a lot better.

Yearly Exam Review

posted Sep 2, 2010, 5:55 PM by Unknown user   [ updated Sep 2, 2010, 11:36 PM ]

In mutliple choice, I got 4 questions wrong.

3. The answer that I put was that Jack could not legally reproduce any of the content that he downloaded but he could reproduce it as long as he acknowledged the source of the data. It was within the law to reproduce the content if he had acknowledged where he had got it from.

14. this question was just an idiotic mistake by me as I had eliminated the other three options but just put a cross in the wrong box.

18. I immediately eliminated A and D as they were completely incorrect options. Therefore the answer was to be between B and C, however the question asked for what is NOT a potential ethical issue and as B was an ethical issue the correct answer was to be C. This was because the degradation of a storage medium is not an ethical issue, it is just a physical issue. 

19. This was a question that nobody in the class got right. The reason why i got it wrong was because I misunderstood digital data to be binary data and said that digital data could only be stored in one of two states. Digital data, is in fact an approximation of a continuous data source and now I remember learning this when we were studying video data in Term 1. 

Overall in the multiple choice, I felt that I could have improved by checking through my responses next time and ensuring that I read the entire question properly. Other than that I felt that I have improved in multiple choice from my half-yearly.

In short answer, I lost 2 1/2 marks .
21 c) In this response in justification, I did not know enough distinct points about the advantages and I tended to mention the same point twice. This question was one where I simply did not three advantages of satellite phone. there were no sill mistakes but I just did not understand the responses needed to answer the question.

22 a)Here I lost 1/2 mark because I thought that transmitting and receiving was data traveling between one phone and another however, in fact data is first transmitted to Facebook servers, that mediate this process. I almost got the process correct and that is why I just lost a mark.

23 b) In this question, I said that RGB values of (225, 239, 35) would produce a colour of a purple shade. This response that I wrote was because I had a mind blank and got mixed up between Red and Green (yellow) and Red and Blue (magenta). This was a mistake that I made as I had not studied hard on this topic.

Overall, in the short answer, I performed well due to the fact that I always read the HSC keyword and entire question properly. I also see the number of marks it is worth. The only way I can improve in multiple-choice is to next time study harder on topics that we had covered in class rather than the basics in the text book.

I feel that I have improved a lot since my half-yearly result and this was because i studied hard. For the next exam, I should manage my time better so that I can revise the multiple choice to weed out any careless mistakes. I should really have got 44 1/2 because of the fact that what I did for Question 14 was plain stupid. Overall, I am pleased with my result. 

RAID flyer

posted May 28, 2010, 9:19 PM by Unknown user

 me and chris did this
 
 

Device Drivers

posted May 25, 2010, 11:55 PM by Unknown user

1.A device driver is a set of instructions for how a computer can communicate and work with a device e.g. pointing stick.
2.The reason we need drivers is so that we can increase efficiency of using hardware i.e. ensuring that everything occurs quickly and the way you want it to happen. An example of this would be so that a computer displays the correct data that you have typed on a keyboard. Another reason why we need drivers is to standardise everything to make it easier and save money for buying new software. An example would be that a computer may only be able to understand one type of keyboard but you have another type, hence the need for drivers to allow everythign to be done. 

System Diagram and Laptop Revolution

posted May 5, 2010, 11:02 PM by Unknown user


Ergonomic Review and RTS

posted May 5, 2010, 4:20 PM by Unknown user

This is my ergonomic review and RTA collecting stuff. FOr the ergonomic review I was with Michael and Samuel and for RTA with Stephen, Michael and Vithoo. If they haven't put it up, it'll be the same as mine.

IPT Preliminary Exam Review

posted May 5, 2010, 4:11 PM by Unknown user   [ updated May 9, 2010, 11:00 PM ]

In my IPT preliminary I made mistakes in the multiple choice. I didn't always choose the BEST answer.
Q8. This was a silly mistake as I didn't read the other options.
Q9. Salami fraud does occur because of the nature of numerical data but the main reason why it occurs is becasue Bank statements do not show all the required data, which is an issue of data integrity.
Q5. A certificate and medals are not information while names of winning students and things on the certificate is information.
Q4. A computerized voting system quickly and accurately determines the winning candidates in each electorate. I misread this question and didn't read the first option.
Q11. 65,536 numbers can be represented while 65,365 is the largest number that can be represented
Q19. If designing a system is HUMAN CENTRED than it must be a scoial issue as social means dealing with people
Overall, my performance in multiple choice was atrocious and to improve for next exam, I must read every question carefully and properly and look for key words in the question that tell me what the question is mainly about. I should check my answers thoroughly to ensure there is no silly mistakes.

In the short answer I did better than I did in multiple choice but there were still many questions that which I could improve on or expand.
Q21. a) In the system diagram, I lost one mark due to incorrectly giving an example of Organising, as Organising is DETERMINING THE FORMAT SO THAT THE DATA CAN BE USED BY OTHER PROCESSES not sorting data into alphabetical order or other ways of sorting. First, I did actually answer something quite close to Mr. Woo's sample answer but changed it for some reason. I must also be concise with my answers e.g. hardware that prints should be called printer. 

Q21. d)I did assess the value of IT in this information system but did not give enough detail on the specific process, I just mentioned them in a more broad manner. For this part I DNAQ as the Q asks for SPECIFIC reference. I also stated that IT eliminates the error that humans make but in reality they only reduce the error as IT can also make errors themselves. For this question I lost marks unnecessarily as I could easily have added more detail for specific processes and not over stated the elimination of an error.

Q22 a)For this question about the iPad, I stated that a customer downloading books is a case of storing and retrieving but Mr. Woo explained to me that it is more Transmitting and Receiving between the Bookstore and the iPad. Storing and Retrieving occurs when the customer downloads a book and stores on his iPad for offline use. This question was clearly a misunderstanding for me about the different processes e.g. Transmitting and receiving and Storing and retrieving.

Q22 b) Ergonomics is to do with the physical being of a human not how their mental state affects their productivity. This is the mistake I made in this question as I stated that portability improves morale and thus improving productivity. That is correct but it is not an ergonomic issue, which means that it is not answering the question. Yet again, I made another mistake not answering the question.

Q23. b) In this question I mentioned the differences between bitmap and vector data but did not correctly explain why a full colour photograph would be more suited for storing as a bitmap. I mentioned that photographic images cannot be edited using vector and colour fills are harder to use in a vector. The answer was actually full colour photographs are difficult to be expressed in mathematical formula.  
My performance in the short answer was much better than multiple but I must read the question properly and specifically answer according to the question. I should also expand more on ideas relevant to the question and learn the specific details behind why/how everything happens.

Overall, in the entire exam my performance was really bad and much worse that what i wanted to get and what makes it worse is that half of the questions I got wrong seemed so easy after Mr. Woo explained them. i also made many mistakes by not reading the question and possible choices correctly. i must improve on what I did wrong in this exam in order to get a decent mark next time.
 

Ergonomics

posted Apr 7, 2010, 7:00 PM by Unknown user   [ updated Apr 7, 2010, 7:02 PM ]

Ergonomics is the science of developing technology/equipment/environment to fit its user. This is done for health and productivity. The main opposition to this is:
  1. Cost
  2. Technical Ease(available resources)
  3. Speed of manufacture

Video

posted Apr 7, 2010, 6:48 PM by Unknown user

Video data type is a combination of:
  • images-frames, many are played in quick succession imitating a continuous scene
  • audio samples
24 frames per second is industry standard

Video data is stored in:
  • analog e.g. film strip. This deteriorates over time with use. It has 4 parts to it. One with images/frames, one with sound waves(stereo), one with dolby surround and one with sony surround.
  • digital. This is an approximation of what is happening and requires special machines to read it. The file size of this is determined by adding together the size of both the audio and visual aspects.

Bits

posted Apr 7, 2010, 6:44 PM by Unknown user

8 bits=1 byte
1024 bytes=1 kilobyte
1024 kilobytes=1 megabyte
1024 megabytes=1 gigabyte
1024 gigabytes=1 terabyte


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