San Jose, CA by IBM. It had 5 million character capacity and had 0.8 sec. worst case access time, 0.6 sec. average access time. It was called RAMAC.
who invented hard disk?
The history of hard disk is that, hard disk is invented in 1950's that time hard disk size is 20 inche's maximum the name of hard disk inventer is "REY JOHNSON" by the help of IBM team. ""BILAWAL ABBAS""
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Reynold Johnson
The hard disk drive was invented by some IBM engineers working under Rey Johnson at IBM in San Jose, CA, in about 1952 to 1954.
A computer hard disk or hard drive (fixed disk) is hardware.
The hard disk is a device which attached in a CPU where data , program ,and folder are being stored .
Hard Disk Drive.
IDE hard disk, SCSI hard disk, SATA hard disk, External hard disk, it is also differ by RPM speed for the HADD. I hope that helpes.
There are two types of Hard disk. 1:Sea gate disk 2:SATA Hard disk
IDE hard disk, SCSI hard disk, SATA hard disk, External hard disk, it is also differ by RPM speed for the HADD. I hope that helpes.
1. IDE Hard Disk 2. SATA Hard Disk 3. SCSI Hard Disk 4. Ultra SCSI Hard Disk