danaxfriendly.blogg.se - A hard disk drive is an example of magnetic storage.

A hard disk drive is an example of magnetic storage. how to#
A hard disk drive is an example of magnetic storage. Pc#

Silver platters where information is stored magnetically, there's anĪrm mechanism that moves a tiny magnet called a read-writeīack and forth over the platters to record or store information, and Hard drive or iPod stays there even when you switch the power off.Ī hard drive has only a few basic parts.

A hard disk drive is an example of magnetic storage. Pc#

The same way, the computerized information (or data) stored in your PC Magnetize a nail, it stays magnetized until you demagnetize it. Storing information even when the power is switched off. Magnetism is used in computer storage because it goes on Independently magnetized (to store a 1) or demagnetized (to store a 0). Large shiny, circular "plate" of magnetic material called a platter,ĭivided into billions of tiny areas. In your computer's hard drive, there aren't really any iron nails. Store a 1), leave the next five demagnetized (to store five zeros), and Number 1000001 in your computer in that big box of iron nails. Thus, computers store a capital letter A as the decimal Letters and other characters can also be stored asīinary numbers. For example, the decimal number 382 is stored as the binary Stored not as decimal (base-10) but as patterns of binary digits Aĭigit-either a number zero or a number one. Million microscopically small iron nails, each of which can store one GB iPod or MP3 player, it's a bit like a box containing 160 thousand If your computer has a 20 gigabyte (GB) hard drive, or you have a 20 Very important: magnetism can be used to store information. Weird way to leave a message for someone, but it illustrates something Magnetized-and it must mean you plan to see them later. If the clip attaches to the magnet, it must be They take it to the kitchen table and try to pick Your friend gets in from school and finds a Is magnetized, it means you will see them later if the nail is You could arrange with yourįriend that you will drop a nail through their letterbox. Suppose the message is a very simple one: either you will Suppose you need to leaveĪ message for a friend and all you have is a magnet and an unmagnetized Magnetism has another very important use. Photo: Magnets-the technology behind hard drives really is this simple! Magnets that can be switched on and off with electricity) to pick up

For example, junkyards use electromagnets (huge Off unmagnetized but, if you rub a magnet back and forth over them, youĬan make them magnetic so they stick to one another. Technology-the science in action-is quite simple. But if you've ever fooledĪround with a magnet and some nails, you'll know that the

A hard disk drive is an example of magnetic storage. how to#

How to store information with magnetism.

Newer hard drives use a different kind of connection, SATA (Serial Advanced Technolgoy Attachment), which allows Side are the IDE (Integrated Drive Electronics) connector, which is how the drive plugs into the motherboard of a computer. Photo: A 30GB (gigabyte) hard drive from an old laptop computer. How does it work? Let's take a closer look! Prodigious memory and lets you store digitalĭocuments. Your computer is the bit that does all the "thinking" andĬalculating-but it's the hard drive that gives your computer its The mid-1980s (though flash memory has replaced them Hard drives were invented over 50 years ago and have been Was not much more than a hard drive: an incredibly efficientĭevice that uses simple magnetism to store vast amounts of

Music player no bigger than a pack of cards.