Data compression bitesize

  • Data compression techniques in Computer network

    What are the two types of data compression? There are two methods of compression – lossy and lossless.
    Lossy reduces file size by permanently removing some of the original data.
    Lossless reduces file size by removing unnecessary metadata..

  • How does data compression work GCSE?

    Compression is a technique that reduces file size.
    Some compression techniques are referred to as lossy, because they cause data to be lost during the compression process.
    Other techniques are referred to as lossless, because they allow the original data to be exactly reconstructed from the compressed data..

  • What is data compression GCSE?

    Compression is used to reduce file sizes – something which is essential in an era of online video streaming and media sharing.
    Without compression, we would: Fit less music, videos or photos onto your smart phone or computer.
    Struggle to stream or download videos from the internet..

  • Data compression reduces the amount of space needed to store files.
    If you can halve the size of a file, you can store twice as many files for the same cost, or you can download the files twice as fast (and at half the cost if you're paying for the download).

What is compression & how does it work?

Compression addresses these issues.
Any kind of data can be compressed.
There are two main types of compression:

  1. lossy and lossless

Lossy compression removes some of a file’s original data in order to reduce the file size.
This might mean reducing the numbers of colours in an image or reducing the number of samples in a sound file.

What is compression & how does it work?

Compression addresses these issues

Any kind of data can be compressed

There are two main types of compression: lossy and lossless

Lossy compression removes some of a file’s original data in order to reduce the file size

This might mean reducing the numbers of colours in an image or reducing the number of samples in a sound file


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