Final answer:
The iPod is the Apple-manufactured portable media player from 2001, playing audio files, videos, and serving as storage. Available in sizes like 8 or 16 MB, it affected the market for older devices, like the Sony Walkman.
Step-by-step explanation:
The brand of the portable media player that has been manufactured and marketed by Apple Computer since 2001, capable of playing digital audio files, videos, and functioning as an external data storage unit, is the iPod. An mp3 player like the iPod can come in various storage sizes such as 8 MB or 16 MB, which indicates its capacity to hold songs, videos, and other data. The design of an mp3 player also accounts for its user interface, as well as connectivity options with other devices, such as computers or speakers. When analyzing the impact of the iPod on the market, the four-step process shows that its advent led to a decrease in the equilibrium price and quantity of older technology like the Sony Walkman, which was primarily used for playing audio cassettes.
The brand of the portable media player that has been manufactured and marketed by Apple computer since 2001 is iPod. The iPod can play digital audio files and videos and can also function as an external data storage unit. It has gone through several iterations and updates over the years, with different models offering various features and storage capacities. For example, the iPod Classic was known for its large storage capacity, while the iPod Touch introduced touchscreen functionality and access to the App Store.