Imaging Devices - MP4 Player Compatible Computer Devices

Description extracted from Wikipedia:

date=October 2017date=October 2017 thumb|right|200px|From left to right: Sony's Walkman [[Walkman A810|A810, and Apple's iPod Nano (5th generation) - two flash memory type PMPs from the late 2000s.]] A portable media player PMP ) or digital audio player DAP ) is a portable consumer electronics device capable of storing and playing digital media such as audio, images, and video files. The data is typically stored on a compact disc (CD), Digital Video Disc (DVD), Blu-ray Disc (BD), flash memory, microdrive, or hard drive. Most portable media players are equipped with a 3.5 mm headphone jack, which users can plug headphones into, or connect to a boombox or hifi system. In contrast, analogue portable audio players play music from non-digital media that use analogue signal storage, such as cassette tapes or vinyl records. Often mobile digital audio players are marketed and sold as "portable MP3 players", even if they also support other file formats and media types. Increasing sales of smartphones and tablet computers have led to a decline in sales of portable media players, leading to most devices being phased out, though flagship devices like the Apple iPod and Sony Walkman are still in production. Portable DVD/BD players are still manufactured by brands across the world. This article focuses on portable devices that have the main function of playing media.