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 compression
algorithms) applied to music/video, photos and text files