Which metals is inside a USB flash drive?
The PCB will contain copper, of course, and probably some gold plating. The solder will be tin with 5% silver. The device lead frames may be tin plated copper, or just tin, and some component leads may be iron. If there are connectors there may be brass (copper/zinc) or phosphor bronze (copper/tin) Inside the ICs there will be aluminum, possibly gold (though not on the silicon, they don't play well together) and traces of other exotic metals.
Is it true that computer Hard Disk contains Gold?
Not just the hard disks, but almost every electronic component has gold in traces. The reason for using gold is to transport electrons quickly. When all those components, processors, RAMs etc are working their ass off in cycles of GHz, you need everything to be quick (speed is more important than cost), and conductors such as copper, and aluminium are tortoises compared to their glamorous sibling-gold. Silver is faster when new, but with time it has a property of corrosion due to inherent moisture, which drastically increases its resistance, and thus gold is the ultimate king of conductors that can be used in electronics.Roughly with 10,000 smartphones or 200 laptops you could produce 250 grams of gold, which is currently priced at Rupees 78,00,00/-. But let me remind you that one should not ignore the cost of recycling gold from such electronics, which is probably high.Procedure for extracting gold from one of the Dell’s blog post:It’s not uncommon for a developing nation to accept all kinds of trash from developed nations, including electronics, in return for cash. Local entrepreneurs typically burn circuit boards and use cyanide on the ash to separate the gold. That’s not what anyone would call a green process, but it is a cottage industry because it gets the job done reasonably inexpensively.We use a mechanical process, shredding computer components to quarter-inch bits to liberate the plastic, aluminum, steel, gold and other materials to create commodity streams. Magnets grab the steel. Eddy currents are used to propel non-ferrous metals (including precious metals) from plastics.
How much memory does a 750GB hard drive actually give you normally?
None. Hard drives do not have you "memory". They give you "storage space". Not the same things. When people look at hard drives, they see 1000 mb in every gb. When a computer looks at the same drive, it sees 1024 mb in every gb. So all the space is there, the OS just list it using a different way of sizing a gb. A drive that humans see as 750 gb will appear on a computer as around 732 gb. Also some of the drive is used to store utilities and other files needed to make the drive run. How much is used by those varies from manufacturer and between models. So without know the exact made and model of hard drive, it is impossible to answer the question.
What is an external hard disk?
An external hard disk is an external storage medium for computer systems:The main benefit / primary reason for using an external hard drive / hard disk is:PortabilityEasy to use / plug and play (USB)Extra storage space for computers with low amount of storage.There are other types of storage devices that computers use. Internally a computer will have an internal hard drive that looks like this:These are not intended to be portable and are meant to be installed internally inside a computer.There are two flavors that a external/internal hard drive can come in:Solid State DriveHard Disk DriveA Solid State Drive (SSD) is the latest technology for storage and is the fastest. They are the most expensive type of drive on the market. These can come in external form as well as internal. All data is stored electronically inside a SSD. More information on how these drives work can be found here:How Do SSDs Work? - ExtremeTechA Hard Disk Drive (HDD) has been around for a long time and is still widely used. These types of drives are cheaper but do not perform as fast as the (SSD). All data is stored mechanically on platinum platters (much like a stack of DVD disks but metal). Hard Disk Drives are prone to mechanical failure because they use moving parts. More information on how these drives work can be found here:How does a hard drive work?
Whats the quickest way to destroy a hard drive?
if you shoot it a couple times it'll be completely busted. honestly, there isn't a faster way to break something besides shooting it. break whatever with little bits of metal traveling faster than mach 3. if you live close enough to me I can use the hard drive for target practice. a 1987 Czech 174 grain steel core bullet would shatter the drive platters, rendering the data on it utterly irrecoverable. that and it being hit by a dozen or so .25 caliber lead buckshot BBs (first used as a clay pigeon then as a rifle target) alternatively, if you set off a bit of thermite on it it'll be irrecoverable too, even by the best, thermite burns at 3800 F and will melt the drive platters to a solid alloy of some kind. Thermite is easy to get or make. you'll need a magnesium ribbon and a propane torch to set it off though finally old tech. use a screw drive and open the drive. you'll see the drive platters right away. take a ball peen hammer and hit it until the platters shatter. this probably will take 1-2 hours. either that or you get a large nail and attempt to put the nail thru the platters.
Can I throw away my computer in the garbage or do I need to smash it up first?
Some parts, like monitors, contain mercury and other hazardous substances and should not be disposed of in the normal garbage. I don't know the exact details since I've never actually thrown out a more or less working computer part of any kind, so consult with someone in your area who knows something about waste management. If you're concerned about someone reading your files, I suggest taking out the hard drive and having some fun with it; physically dismantle it in some way, whether it involves a screwdriver or a sledgehammer.
What can be done with old computers?
If it isn't too old, the best thing is to pass the computer on to someone else. Clear off your personal data first. If the parts are still useful, give it to someone who builds computers. Use the old hard drive. For a laptop hard drive, you’ll need a 2.5″ IDE or SATA caddy. For a regular hard drive, generally a 3.5″ IDE or SATA caddy is in order.More creative:Could use them as props on movies set in the past. Could use the fans in a solar food dehydrator. Could take out their circuit boards and use them for art projects. Could cut a part of a tree out and place the circuit board in. The tree will grow around the board making the tree look very high tech. (I am going to try that.)Could incorporate the boards in various sculptures. Could use the parts to build the control room for a space ship and then make movies. Could use the computer case metal to bend and sharpen into arrowheads. Could use the heat sinks to scrape with metal and make music. Place the old case in a tree where birds can build their nests in it. More ideas?
What is the driver for JBL platinum speaker?
Just a note... the kind of speaker has nothing to do with the driver you need to get your sound card working. What you could try doing is uninstalling the sound card drivers completely by right clicking on the 'My Computer' icon, then clicking on Properties. Go to the Hardware tab and then to the 'Device Manager'. Look in the Sound, Video, and Game controllers drop-down for the sound card you have. If you dont know your sound card, the info can be found online by searching your computer model or by looking in the spec sheet if you still have it. To uninstall something.... just right click it and then 'uninstall'. However, I would only do this if AFTER you find out what your sound card is and then where to get the driver. If you still have the installation cds that came with your computer, it is likely that the driver would be on there. Another thing to try, possibly before uninstalling anything.... in the same Device Manager window, right click on your sound card (whatever it may be) and then go to Properties. In the driver tab, look for 'roll back driver'. If anything has changed recently, this should undo it... if it doesnt work, then try the uninstall/reinstall mentioned above. Good luck.