jan 1, 1956 - The Hard Disk Drive
it was made in 1956, it had 20 24- inch disks with the total storage of 5 MB, the inventor was Reynold B. Johnson.
The price that was first introduced was 81,000$ to 142,400$
Added to timeline:
CBA Timeline of computer storage
By; Alyssa DelaCruz
4th hour CBA