National 5 Computing Science

Original post by Ethan100

This for example :

Can you please show me how to do it ?
Thanks !

4*6*600*600 = 8640000 pixels
8640000*24 = 207360000 bits
207360000/8 = 25920000 bytes
25920000/1024 = 25312.5 KB
25312.5/1024 = 24.72MB

Original post by Ethan100

An Array is basically just a list
A string is numbers and characters which are together

I usually notice array when there are square brackets, e.g. A shopping list
["Milk", "Yoghurt", "Cheese"]

Well that's how it looked like in Python

How do you identify a string In python ?

Reply 101

Original post by Lewis H01

4*6*600*600 = 8640000 pixels
8640000*24 = 207360000 bits
207360000/8 = 25920000 bytes
25920000/1024 = 25312.5 KB
25312.5/1024 = 24.72MB

How do you identify a string In python ?

Do you use Python too ?

Well I look at the variables

Var1 = 255 : This is an example of an integer
Var2 = Hello : This is an example of a string
Var3 = Hello221 : This is another example of a string

Reply 102

Original post by A+Hunter

Basically what you want to do is the following:

Inch*Inch*DPI*Colour Bit Depth
4*6*600*24
=345600 (BITS) / 8 (Divide by 8 here)
=43200 (BYTES) /1024 (Divide by 1024here)
= 42.1975 KiloBytes
Leave your answer as Kilobytes unless the question says otherwise. To convert to MegaBytes just divide by 1024 and then to convert to giga just divide by 1024 and so on...

If they don't give you the DPI then just do:
Inch*Inch*Colour Bit Depth

And then do all the other steps

Original post by Lewis H01

4*6*600*600 = 8640000 pixels8640000*24 = 207360000 bits207360000/8 = 25920000 bytes25920000/1024 = 25312.5 KB25312.5/1024 = 24.72MBHow do you identify a string In python ?

Thank you guys so much !!

Reply 103

Original post by Ethan100

Thank you guys so much !!

No problem :smile:

Original post by Ethan100

Thanks, that's helpful...

Reply 104

Original post by Lewis H01

No problem :smile:

Thanks, that's helpful...

Do I sense some sarcasm ? :P

Reply 105

Original post by Ethan100

Do I sense some sarcasm ? :P

Nah, for real man that helped and by using your methods I'm getting the correct answers :tongue:

Reply 106

username1842595

Is the exam tomorrow?
P.S When does exam leave end for you guys?

Reply 107

username1842595

Original post by Lewis H01

Thanks.

how's your revision going?

All my exams are finished so I have no revision :biggrin:

Reply 108

Original post by sameehaiqbal

Is the exam tomorrow?
P.S When does exam leave end for you guys?

Yeah it's tomorrow HELLPP, any advice ?

Reply 109

username1842595

Original post by Ethan100

Yeah it's tomorrow HELLPP, any advice ?

You will easily pass trust me as long as you did well in your assignment. Trust me. Don't worry at all.

Reply 110

Could anyone give me a list of everything that is most likely to come up?

I'll give rep to those who reply :smile:

Reply 111

Original post by Lewis H01

Could anyone give me a list of everything that is most likely to come up?

I'll give rep to those who reply :smile:

Most definetely pseudocode 4/5 markers, File size of graphic, representing binary numbers, legal/ security implications, maybe Laws like computer misuse act. Database knowledge. And probably most likely a little of computer architecture.

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Reply 112

Original post by RossB1702

The address/data bus? User interface? Networks?

Also how many pseudocode questions will there be?

Reply 113

Original post by Lewis H01

The address/data bus? User interface? Networks?

Also how many pseudocode questions will there be?

Yes them. Pseudocode id say 2-3 probably.

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Reply 114

Original post by RossB1702

Ross, do you know that negative decimal to binary thing? I think it's called Two's Compliment. Do you think one will come up because it's always been a positive decimal number to binary question in the past.

Reply 115

What's a database with more than 1 table called ?

Reply 116

Original post by Ethan100

What's a database with more than 1 table called ?

Relational/linked database

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Reply 117