WJEC CG3 January 2013

Can I PM it to you somewhere?

Reply 22

Original post by LewisRichardson

Can I PM it to you somewhere?

Hi I sent you a pm.

Cheers.

Reply 23

Enginerd.

This has got to be one of the hardest exams i've come across. :frown:

Not really impressed. My teacher is absolutely legend at Computing and has found many mistakes in both the Mark Schemes and Question Papers. One of them being, an Interrupt can be caused by software? I'm sure it can actually only be caused by hardware?

Reply 24

Original post by Enginerd.

This has got to be one of the hardest exams i've come across. :frown:

It can definitely be performed by software but I agree the exam is absolutely rubbish would help if they had a definitive text book to revise from the teacher99 notes are good but half of the time they are different to what is on the mark schemes

Reply 25

Sorry for double posting but could somebody explain floating point arithmetic, mantissa and exponent please? :biggrin:

Reply 26

Original post by Huwtrosky

Sorry for double posting but could somebody explain floating point arithmetic, mantissa and exponent please? :biggrin:

Have you got TheTeacher software? Use that, it explains it really well.
Do we need to know how to store negative numbers e.g. -14.625 in floating point?

(edited 10 years ago)

Reply 27

Okay cheers I'll take a look, I don't think negatives have come up on papers yet but I'd learn it just in case

Reply 28

If you want some advice just compile all the essential content to learn straight from exam answers (even if they are crap), at least then you'll have accuracy.

Posted from TSR Mobile

Reply 29

The way I'm revising at the moment is doing past papers then marking them from the mark scheme and seeing which areas I need to improve on and taking the answers from the scheme as my notes

Reply 30

Enginerd.

Hmm, i'm revising by gathering all the definitions and just memorizing em, the other stuff, you either know or you dont. Very hard to bluff your way to a good grade here.

Reply 31

Enginerd.

Does anyone have the CG3 Jan 2013 Paper and Mark Scheme, can you please upload it here. Thank you.

Reply 32

CG3 2013 January QP.pdf649.2KB

QP and MS.

MARK SCHEME - 2013 JANUARY.pdf286.5KB

Reply 33

For the few people interested I've also got a homemade revision booklet

CG3 Revision.zip201.6KB

Reply 34

Original post by LewisRichardson

For the few people interested I've also got a homemade revision booklet

Thanks for these, definitely good for some last minute revision!

Reply 35

has anyone got tips on how to write algorithms? because that's the bit i struggle with most. :redface:

Reply 36

Original post by nm786

has anyone got tips on how to write algorithms? because that's the bit i struggle with most. :redface:

Use START and END (for the start of your algorithm to the end of it).

Read the text given and state DECLARE/SET for all the data types you'll need to use (i.e. declare INTEGER myInt or set INTEGER myInt = 1)

When you've got an idea of what you need to do for the algorithm, you'll then want to start using your IF's and foor loops.

For the loops, use something like (as an example):
for Count 1 to 6
input myInt
set total = total + myInt

if total > 20
end
end

OUPUT "total = " + total

In any case, people who mark this exam probably don't have a good working knowledge of programming really, so if it looks professional enough they'll probably award you a good mark anyway.

Reply 37

Original post by LewisRichardson

cheers man, this helps a lot! Also when do you use WHILE WEND and REPEAT UNTIL loops?

Reply 38

To be honest I've never seen a past question that uses them, I think IF and COUNT are good enough for most of the questions.
Even so, you can use it for something like:

WHILE i < 10
do this

Reply 39