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Go to http://www.opensource.org/ The answers to your questions should then become clearer. Although Open Source is not directly mentioned in the syllabus it is becoming more and more popular so its worth thinking about. Consider the Linux operating system and a few years ago Macromedia publicly...

You wont be asked for this sort of detail. In the exam it is reasonable to just assume that a random number generator exists (normally generating numbers from 0 to less than 1). In pseudocode just write something like: Set RanNum to random number from 0 to less than 1 And if you...

Here's my sketch... http://www.blizzardhacks.net/upload/images3/lights.1067720710.jpg

You're answer is a circuit diagram not a truth table. So you get 0/6. If the question had asked for a circuit diagram then its a much more difficult one. If so then your answer is really good, the green part is correct, the red part is also correct. However your amber light can be on at the...

Well I've just had a look, and some knowledge of ASCII is needed for Q23(b) and also for 25(a). 25(a) gives you the necessary codes in hex and expects you know that letters appear sequentially. Depending on your answer, 23(b) may require knowledge of the codes for A-Z, a-z and 1-9. In hindsight...

You don't have to know all the ASCII codes. It can help to know that A is 65 and a is 97, but not the rest. (I coordinate all the independent SDD and IPT trials so it must have been another paper!)

Set 10B Q6 10101010 (twos complement) in decimal is... =-128 + 32 + 8 + 2 = -128 + 42 = -86 which is answer A Set 10C Q7 Multiplying by 4 in binary is achieved by.... Try an example, say 8 * 4 =32 in binary 8 = 00001000 in 8 bit binary 32 = 00100000 in 8 bit binary To get...

The SDD syllabus is the bible, its what the HSC examiners must use. According to this bible you need to know about: Specialty circuits, including: -half adder -full adder -flip-flops as memory store So its not really very detailed, so I can only give my opinions. Some teachers feel I...

Excel is correct. You keep bringing down zeros, so you get a repeat of the following: Bring down a zero 1000-110 = 10 the answer is now 1111.1 Bring down a zero 100 is less than 110 so the anser is 1111.10 Bring down a zero 1000-110=10 so thwe answer is 1111.101 And so...

You're adding not subtracting from the RHS: 1-0 =1 then 1-1 = 0 then 10-1=1 So you get 101

Thanks -X- the url is http://www.blizzardhacks.net/upload/images3/BinDiv.1067660919.jpg

Its only 9kb, not exactly a monster!!!

Are you using heinemann? Its evolution chapter really has little to do with the topic apart from the last few pages.

What's the go, you can only attach files up to 1 byte!!! Winston I've emailed a jpeg to you using your hotmail address from this site. If you can shove it in this thread somehow that would be good. Sam

I'll do it by hand then scan it, give us a few minutes!

asdf: As the syllabus directly mentions this stuff then you'd be wise to study a specific example that relates directly to a printer. (My text has one as part of Set 10F, questions 13 to 15). As Fosweb says, many printers are different so if specific codes are needed to answer the question...

Black/white box and alpha/beta testing are not mentioned in the syllabus specifically at all. However they're such fundamental testing techniques that you'd be mad not to understand what they mean, and more importantly when they're used and for what purpose. The syllabus talks about different...

-X-: Correct, the marking criteria is used quite rigidly, however it is never so rigid that correct answers lose marks. Also if for example the criteria says a mark is awarded for a loop then it is understood that the loop must be used in the correct context and work correctly. You can't just...

Yep the total logic is checked. Mind you it gets pretty quick once you've seen a few hundred algorithms all answering the identical question. There really are not that many different ways used to solve most problems, and its exciting when you get a new one (well at least it relieves the...

Check out the link I posted earlier in this thread http://www.itmweb.com/essay550.htm It explains both abstraction and encapsulation. In simple terms: Abstraction is about consdering only the relevant bits needed to solve a part of problem and sort of ignoring the big picture. For...