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Invention Timeline
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The floppy disk
First commercially sold floppy disks hit the market in the early 70's. They were created by IBM and Memorex. They were 8 inches in diameter and could hold about 80 kb of data. -
Email
In 1971, Ray Tomlinson created the first internet mailing system. It was developed to send mail on the ARPANET system, which was the precursor to modern internet. -
Digital wrist watch
In 1972 the Hamilton Watch Company invented the Pulsar Time Computer. It was the first digital time wrist watch and paved the way for time keeping. -
DynaTAC Prototype
In 1973 Motorola engineer Martin Cooper made the first truly mobile phone call on the very first DynaTAC prototype. This was a turning point for telephone communication. -
Portable Cassette Player (Walkman)
Sony releases the Walkman in 1979 and it revolutionizes the way people listen to music. It costed about $150 when it was released, and Sony sold millions of units.