7 replies to this topic

[$impl¥_®i¢h]

Hey ive kinda forgot how 2 do these q's can sum 1 help. I get totally different anwers than the ones given.

Questions from Scholar

Q1)

An animation contains 1 minute of film. It is displayed in a frame size of 5 X 4 inches at a rate of 25 frames per second using a resolution of 300 dpi and colour depth of 24 bits. Assuming no compression, calculate the total storage requirements for this animation in Megabytes. Your answer should be given to 2 decimal places.

Q2)

Calculate the size in bytes of a bitmap image of dimension 4 X 3 inch square using 72 dots per inch resolution and a pixel depth of 1-bit.

Thanks

[hssc11045]

for question one going by the way i have learned to do it i would do:

5 times 300 =1500
4 times 300 = 1200
multiply 1500 by 1200 to get 1800000 then multiply by 3 (24bits =3bytes) =>5400000bytes /1024 =kilobytes /1024 =megabytes =>5.149841309 times 25 (25 frames per second) = 128.7460327 and times 60 as 60 seconds in a minute => answer should be 7724.76MB to 2 decimal places
This does not seem correct do u knw the value u r supposed to get?


for question 2

4 x 72 = 288
3 x 72 = 216
216 x 288 =62208 times 1 => 62208 bits and divided by 8 (as 8 bits in a byte)

=> should be 7776 bytes


hope this is off some use

[$impl¥_®i¢h]

Ok these are the answers given on the Scholar site,

Q1) g1

Q2) 60.75

Those dont look right to me...

Check out the page if u have access, its under
Computing / Outcome 1 / Topic 2 / 2.3.3 Review questions

[little_minx]

[hssc11045]

k....ave checked out the site and a duno what or where the answer "g1" comes from so thats got to be an error or it needs explaining and for the second question that gives 60.75 that is correct if you do 4x72 x 3x 72 = 62208 multiplied by 1 = 62208 bits /1024 = 60.75.....HOWEVER I always thought that there was 8bits in a byte not 1024 so again a think they are wrong

[little_minx]

[sparky]

The first question is very unlike the question you get....question 2 is more like the type of question you get asked in the exam

[$impl¥_®i¢h]

Oh right thanks anyway, thats how i did the calculations, but the great Scholar provided crappy answers.