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1.04 Coding, encoding and
encrypting data - Coggle Diagram
1.04 Coding, encoding and
encrypting data
Coding Data
You as a user might have already experienced having to code data, these codes are to clarify or to identify data
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3 Advantages: :check:
Presentation : This means that the data can be coded into shorter labels instead of writing the whole data down
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Speed of Input: Similar to Storage, by labelling and coding it down to smaller data you are saving your time in typing the whole phrase / data down
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Encoding Data
When data is encoded it is stored in a specific format. This format is called Binary codes which computers use Binary digits such as 0's and 1's
Therefore, data
needs to be encoded into a format which the computer understands, this is the purpose of Codecs they are used to encode data for audios text and others
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Images
Images are encoded as bitmaps (images are stored as a series of tiny dots called pixels. Each pixel is actually a very small square that is assigned a color, and then arranged in a pattern to form the image)
Sound
The sampling rate, bit depth, and bit rate are all stored when sound is encoded. At first when sound is recorded, it is transformed to a digital format from its original analogue format.
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3 Advantages :check:
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faster downloading of websites with images, music
or video
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Encryption
The process of converting information or data into a code, especially to prevent unauthorized access.
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Ciphers
Ciphers are used to convert a message into an
encrypted message . It is a special type of algorithm which defines the set of rules to follow to encrypt a message.
Ceaser Cipher
This is when you shift the original letters by 3 placements to alter its meaning, a user could go back 3 letter backwards to find the true meaning
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