need help in computer plzz

[taqi786]

I tealyy need help
Regarding this
I wannna no
What is losssseless nd lossy compression
What fis losseless nd lossy compression

 

[hafsa saleem]

lossy compression is a compression technique that involves discarding some of the data which is generally undetected by human senses .this technique results in the loss of quality of the original file (since some of the data,though imperceptible to humans is lost)therefore this type of compression may not be used where we need EXACTLY the same data after compression,as for word documents.it's widely used for compression of music and video.REMEMBER files that are compressed this way can never be decompressed
lossless compression is a compression technique that reduces a particular file's size without discarding ANY information.this type of compression stores the repeating units or similar units(set of information/data)once only and the number of times it is being repeated(known as index).Files compressed this way need to be decompressed before they can be used/understood
if u're still unable to grasp the concept :
http://en.wikibooks.org/wiki/GCSE_Computing/the_differences_between_lossy_and_lossless_compression
for further help in computer science:
zakonweb.com
https://www.scribd.com/doc/219694497/O-level-Scheme-of-Work
hope this helps!!!if it did ,even minutely,then i think you could be so kind as to pray for 5A* in my forthcoming CIEs.

 

[taqi786]

Thank u so much
Nd i will of course prayfor u

 

[hafsa saleem]

Mention not!
Thanks

 

[taqi786]

I had some more quedtions

 

[taqi786]

What is included in looseless techniques

 

[taqi786]

Q2 - y usb is used serial transmission
Q3- y integrated circuit use parallel transmission
Q4- what's IP adress in LAN
Q5- what's difference b/w general nd specific purpose of register
Q6- use of SSL nd TSL in HTP protocol

 

[taqi786]

Q7 - what do we mean by copyright nd plagiarism
Q8- cypher text nd ecryption ??
Q9 - difference b/w HTML and HTML presentation

Thanxx

 

[hafsa saleem]

these are the questions given in sir naveed saqib's guess ppr,right?

 

[hafsa saleem]

i provided u the link to the notes and scheme of work (which is a resource by Cambridge University and contains links to useful websites that have content pertinent to the new syllabus),so that you could refer to them whenever u have any query.a thorough reading of the notes on zakonweb.com could help u understand far better than i could explain you.
for the difference between general purpose and specific purpose registers:
http://www.teach-ict.com/as_as_computing/ocr/H447/F453/3_3_8/architecture/miniweb/pg2.htm

 

[taqi786]

Hmmmmm
Thanxx

 

[taqi786]

ssper

 

[taqi786]

Nd yeah right
It's the gues paper

 

[taqi786]

https://www.scribd.com/doc/219694497/O-level-Scheme-of-Work

Thia site isn't opening

 

[hafsa saleem]

try googling "o level scheme of work 2210".

 

[taqi786]

Hmmm
I 'll try