Multimedia

Data, i.e. a compilation of values that conveys information to the user, either of digital or analogue production. Digital data is commonly encoded in standardized container formats so as to enable ease of access, often co-developed by the International Organization for Standardization (ISO); such formats include Portable Document Format (.pdf), E-Publication (.epub), and Moving Picture-4 (.mp4). Media storage units, both analogue and digital, are typically accessible via an electronic technology only. Non-digital items may include, for example, cassette tapes and vinyl records.