Скачать или смотреть Information Representation and Multimedia - Part 3

binary magnitudes, binary prefixes and decimal prefixes
binary, denary and hexadecimal number systems
how to carry out binary addition and subtraction
the use of hexadecimal and binary coded decimal (BCD) number systems
the representation of character sets (such as ASCII and Unicode)
how data for a bit-mapped image is encoded
how to estimate the file size for a bit-map image
image resolution and colour depth
encoding of vector graphics
the representation of sound in a computer
the effects of changing sampling rate and resolution on sound quality
the need for file compression methods (such as lossy and lossless formats)
how to compress common file formats (such as text files, bit-map
images, vector graphics, sound files and video files).