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General Tech Technology & Software . 2 years ago
Posted on 16 Aug 2022, this text provides information on Technology & Software related to General Tech. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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Answers (2)
I am not sure, if that is the right forum, but out of the 158 stackexchange lists I saw, this seemed to be the best bet.
The question: I was reading about the technology used in CD Players and the Hard disks. As far as I got it, the CDs uses the laser technology to detect the bits, and the hard disks ( non SSD ) uses the magnetic field.
Why did laser technology die in favour of the magnetic field? Why cant the hard disks have the same technology that is used in the CD players?
Is it possible to have something called a hard disk player instead of a CD player. And instead of those bulky external USB hard disks, one can simply have a thin CD like hard disk?
Sure they could. But they would be slower (laser is heavier to move than tiny magnetic head) and with less capacity (magnetic disks are in range of several thousand GB, while optical disks are just few GB). Why would anybody want that?
Technically yes. But again, why? Without bulky metal enclosure it would be very suspectable to data loss due to magnets around, it would be much lower capacity (only one plate instead of dozens of them), and since it is not dust-free, heads would have to be larger leading to much lower speeds and capacity. This is after all, what "floppy disk" was (non bulky removable magntic spinning disks). Nobody wants to go back there.
So, just use solidstate removable usb storage, like usbkeys. Prices are down, form factor is small, they have plenty of spaces and speed is okayish.
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