National 5 Computing Science 2018-19

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Ay @Kubsyy, how's your studying going for computing science? I'm starting today, therefore I have a week before the exam; should be well more than enough to memorise everything.

Hello. My studying for Computing is going very good :smile:

, however my teacher was not teaching us the course (we done like 1/4 of the course with long countless talks!) but I still hope I will pass at A atleast. I hope you pass too :smile:

Reply 21

Strelzo

Original post by Kubsyy

Hello. My studying for Computing is going very good :smile:

, however my teacher was not teaching us the course (we done like 1/4 of the course with long countless talks!) but I still hope I will pass at A atleast. I hope you pass too :smile:

Ah I see, man I hate crap teachers, do you have a good set of notes that you can study from at least? Sure you'll be on track for a high A :thumbsup:

Reply 22

username4490612

Original post by Strelzo

Ah I see, man I hate crap teachers, do you have a good set of notes that you can study from at least? Sure you'll be on track for a high A :thumbsup:

Yes I do

. I’m almost finishing Website stuff and then when I finish revising from book I’ll probably recite the notes and do flashcards :smile:

Reply 23

Strelzo

Original post by Kubsyy

Yes I do

. I’m almost finishing Website stuff and then when I finish revising from book I’ll probably recite the notes and do flashcards :smile:

Awesome, and thanks for the follow btw 😌, returned the favour 🙃.

Reply 24

dude101010

quick question:

is mantissa the number after the decimal point?

(edited 4 years ago)

Reply 25

winterscoming

Original post by dude101010

quick question:

is mantissa the number after the decimal point?

The mantissa represents all of the significant digits - have a look at this page for an example: https://en.wikipedia.org/wiki/Significand

(edited 4 years ago)

Reply 26

Strelzo

Original post by dude101010

quick question:

is mantissa the number after the decimal point?

Floating point notation is represented as:

Mantissa x10^Exponent

For example:

0.00393874 x10^4

Mantissa = 0.00393874

Exponent = 4

Reply 27

dude101010

thanks. in this paper https://www.sqa.org.uk/pastpapers/papers/papers/2018/N5_Computing-Science_QP_2018.pdf
Q4b the answer is
Mantissa – 7652
Exponent - 3
answers: https://www.sqa.org.uk/pastpapers/papers/instructions/2018/mi_N5_Computing-Science_mi_2018.pdf

I don't get why its 7652 and not 0.7652

Original post by Strelzo

Floating point notation is represented as:

Mantissa x10^Exponent

For example:

0.00393874 x10^4

Mantissa = 0.00393874

Exponent = 4

Reply 28

Strelzo

Original post by dude101010

We were told that it doesn't matter if you put the 0. But then again, looking at it from a mathematical perspective, the scientific notation form never starts with a 0; to represent 0's, you would have it as Mantissa x10^ -Exponent. I will ask my teacher to clear that up just in case, but he did say it was ok in the beginning.

(edited 4 years ago)

Reply 29

dude101010

Original post by Strelzo

thank you

Reply 30

David20CM

See for the question 'Using a design technique of your choice ' If i choose sudocode and I write in Visual Basic do I get marks for that ?

Reply 31

Strelzo

Original post by David20CM

See for the question 'Using a design technique of your choice ' If i choose sudocode and I write in Visual Basic do I get marks for that ?

For future reference btw Pseudocode is spelled like that, because you'll end up losing marks for that. And Visual Basic is an implementation technique; my choice of preference as well, however, they just account it to Pseudocode. I write Visual Basic everywhere it says "using a design technique of your choice"; so much easier in my opinion, and it gives you more in-depth knowledge of how it actually codes like; when you get questions that ask you to "Refine Step ...", you're on top of the game.

Reply 32

David20CM

Original post by Strelzo

So it's okay what I said ?

Reply 33

Strelzo

Original post by David20CM

So it's okay what I said ?

It's another thing I'll add on my list to double check when I go in for a pre-exam Masterclass. I use it, and have got all the marks for it in class tests, so I'd assume so; but I'll let you know on the 21st May to be 100% certain.

Reply 34

-MikeMike-

So for the 'design questions' you can either do flow charts, pseudocode or structured diagrams?
Also what do you guys think is the easiest from them?

Reply 35

username4490612

Original post by -MikeMike-

So for the 'design questions' you can either do flow charts, pseudocode or structured diagrams?
Also what do you guys think is the easiest from them?

I think structure diagram is easy, since there’s not a lot of symbols and it’s like a tree branch so I’ll use that.

Reply 36

Strelzo

Original post by -MikeMike-

So for the 'design questions' you can either do flow charts, pseudocode or structured diagrams?
Also what do you guys think is the easiest from them?

Graphical design notations take the longest; Pseudocode is very easy and saves a lot of time, plus you won't need to memorise all of the symbols and their purpose.

Reply 37

scott23434

Original post by David20CM

So it's okay what I said ?

I am not 100% sure but as far as i am aware if the question says using a design technique of your choice , you need to do pseudocode , flow chart etc. If it says a programming language of your choice you use visual basic or whatever you used.