Communication · 1935
Magnetic tape recording
AEG's Magnetophon records sound on coated plastic tape that can be edited and erased.
The German Magnetophon, shown in Berlin in 1935, recorded on iron-oxide-coated plastic tape; high-frequency bias in 1940 made it near studio quality. Tape transformed music production and radio, and the same principle stored computer data and video.
What it built on 3
What it led to 1
Related measurements
The dashed line marks when it first worked.
Cost of memory and storage Latest: Memory: 1.09k $/TB (2023) Source: Our World in Data