Just had my A2 cpt4 aqa exam.
To n e 1 else who has done it, how did u find it?
i took it, it was pretty cool i guess. the only question that messed me up was that class question! we have not learnt how to create classes. lol
i should of known it would come up
the rest was alright. another hard question was the assembly language question too.
i'm pretty sure i'll get around over 50-58 marks. The 3rd question was terrible for me... i couldn't understand what the hell did they want from me... to find the data cells, what? And all those nusty looking hexa!!! AGHHH!!!
I was so happy to see that class question... i was lucky i learned all the procedure... it was easy all you had to do was:
Name : String
Whatever(can't remember what it was): Integer
What a dissapoitment it was only for 4 marks...
Guys, what did you get for the floating point question? I got eh, -36.5 or -39.5 can't remember now...
Recursive algorithm was good... 9 marks, hehe, it was so easy, we had identical question on specimen paper, i'm glad i've revised that one..
It wasn't too bad i guess, considering i guessed like 60-70% of the paper, it could have been a lot worse.. i know many people will dissagree and say it was difficult.... anyways, we've done it..
LET'S PARTY NOW!!!!!!!!
Would u get the mark if u put TEXT instead of string, I forgot what it was called.
I didnt answer the assembly code one either.
What other questions and answers do you all remember?
Yes I got 512 too was one of them - the other +1
cept I got -55.XXX for the floating point question
duh I am dumb lol thats what it was yea I couldnt think so I put it was a check digit kinda prog lol
i don't think they'll give you marks for text.
As for cells question i still don't know what it was about. Can some1 explain it? Just curious....
Assemble question was quit easy, but the way they labled it gave me so trouble. I still don't know what lable field was for, i put while there..hehe
And all looked like:
label: while next to cmp
upcode ---operand ----comments
LD X, ---- #0 ------------- loads 0 into
CMP X, -- #999 ------------cmp value in reg with X
BEQ ------Exit ------------exits if bla bla bla
JMP ------While -----------Loop
Exit ----- -----------------exit bla bla
That's the way i've done..or it looked something like that... well i think i'll get at least 5/7 marks... won't i?
i thought it converted the value into binary... have you noticed that an output in binary was equal to 53, the number we had at the beginning...
32 16 8 4 2 1
1 1 0 1 0 1 = 53
By the way, what denary value did you get in question 1 part 2. The one about an unsigned binary no or something... i got -13 something.... big fraction.....
the v first one was something like
1011 0111 0110
and it said something about the decimal thing having 4 bits FOR THE V 1st question
I worked it out as -55.XXX whatever those last 2 are
what exactly did you do? i move the dec point to the right 4 places and got -13.xxxxx
Lol. All your comments make me remeber to exactly a year ago, some of the knowledge is coming back but most still evades me...
I got 77/90 I think for that paper. If I took it today god knows what i'd get lol.
last paper was easier than the one we had this year...
Sat this paper today - definately harder than the past papers I've looked at, oh well. Right...
Floating point answer was -36.5, as you do use two's complement to get -37 and then you add on the 0.5.
When defining the class, I stupidly put the data type for those properties as Text instead of string (thinking of databases). I'd be most surprised if the mark scheme doesn't accept text, though.
For the Assembly question, the table layout initially had me stumped, but once I thought through what I actually had to put, realising I needed to use a couple of labels for lines such as JEQ Here, for example, made me realise what the label column was for!
The floppy disk controller question was horrible...for the code DD00, for example, I knew D was 13 in denary, so I put 131300 as my answer...not very confident at all on that one.
Rest of paper went well...be disappointed if it's not in the 55-60 region...have to get an A!!!
WHat the hell is 2s compliment I thought it was just the first 8 binary digits for the integer and the last 4 for the fraction?????? Whats that I did then?