Encoding data

A data file or message is a collection of bits, of ones and zeros. The more bits in a file or message, the more memory or storage it requires or the longer it takes to transmit.

We work with numeric, text, image, audio and video data. A coding scheme is required if the data is to convey information or have meaning, and there are multiple coding schemes for every type of data.

Two programs must use the same coding if they are to interchange information, but one can often transcode a file -- convert it from one coding scheme to another -- and we can almost always compress a file.

Topic Assignment
Units of measure for distance, speed and quantity of data  
Prefixes for counting large numbers  
Data types  
Information requires codes  
Encoding text data  
Encoding image data  
Encoding numeric data Number systems
Number conversion  
Encoding audio data  
Video files  
Video file comparison  
Video is demanding  
Data compression  
Blind audio compression test  
Audio compression  
Blind image compression test  
Image compression  

Disclaimer: The views and opinions expressed on unofficial pages of California State University, Dominguez Hills faculty, staff or students are strictly those of the page authors. The content of these pages has not been reviewed or approved by California State University, Dominguez Hills.