From Einstein to Xbox: The IFA consumer electronics exhibition turns 50

From Sept. 3-8, the IFA , one of the oldest and largest consumer electronics exhibitions on the planet, will be in full swing.

MiniDisc at IFA 1991

Introduced in 1991, Sony's MiniDisc was positioned as a replacement for the then ubiquitous compact cassette. It offered more than an hour of digital recording space on a 2.5-inch disc, but it failed to gain mass-market acceptance in most markets.

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