1. Theory of computer science

1.1.3 Data storage

show understanding that sound (music), pictures, video, text and numbers are stored in different formats
identify and describe methods of error detection and correction, such as parity checks, check digits, checksums and Automatic Repeat reQuests (ARQ)
show understanding of the concept of Musical Instrument Digital Interface (MIDI) files, JPEG files, MP3 and MP4 files
show understanding of the principles of data compression (lossless and lossy) applied to music/video, photos and text files