2. Encodings
Encoding facilitates the conversion of data into formats suitable for storage and transmission, encompassing a range of methods such as ASCII and Unicode. The chapter highlights the significance of encoding in computing, especially within varied applications like internet communication and data storage. Understanding these systems is critical for managing complex data requirements effectively.
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What we have learnt
- Encoding is the process of converting data into a machine-readable format.
- Character encoding systems, such as ASCII and Unicode, are essential for representing text in computers.
- Different types of encodings apply to various types of data, including images, audio, and video.
Key Concepts
- -- Encoding
- The process of converting data from one form into another for efficient storage, transmission, and interpretation.
- -- ASCII
- A 7-bit encoding scheme that represents 128 characters, including English letters, digits, and symbols.
- -- Unicode
- A comprehensive encoding standard that provides a unique code for every character across all writing systems, exceeding the limitations of ASCII.
- -- UTF8
- A variable-length character encoding system that uses between 1 to 4 bytes to represent characters, widely used in web applications.
- -- Compression
- The process of reducing file sizes to improve storage and transmission efficiency, with methods categorized as lossy and lossless.
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