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Computer Hardware
Computer hardware is a general term used to refer to all the physical parts of a computer. Internal hardware devices include hard drives and motherboards, while external hardware devices include monitors, mice, keyboards, and printers.
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A UART (Universal Asynchronous Receiver/Transmitter) is the microchip with programming that controls a computer's interface to its attached serial devices. Specifically, it provides the computer with the RS-232C Data Terminal Equipment ( DTE ) interface so that it can "talk" to and exchange data with modems and other serial devices. As part of this interface, the UART also: * Converts the bytes it receives from the computer along parallel circuits into a single serial bit stream for outbound transmission * On inbound transmission, converts the serial bit stream into the bytes that the computer handles * Adds a parity bit (if it's been selected) on outbound transmissions and checks the parity of incoming bytes (if selected) and discards the parity bit * Adds start and stop delineators on outbound and strips them from inbound transmissions * Handles interrupt s from the keyboard and mouse (which are serial devices with special port s) * May handle other kinds of interrupt and device management that require coordinating the computer's speed of operation with device speeds More advanced UARTs provide some amount of buffering of data so that the computer and serial devices data streams remain coordinated. The most recent UART, the 16550, has a 16-byte buffer that can get filled before the computer's processor needs to handle the data. The original UART was the 8250. If you purchase an internal modem today, it probably includes a 16550 UART (although you should ask when you buy it). According to modem manufacturer US Robotics, external modems do not include a UART. If you have an older computer, you may want to add an internal 16550 to get the most out of your external modem.
What if a CD you want to erase has CD-R on it but not CD-RW?
Sadly, you can't erase CD-R's. Once the data has been burned on the CD-R disc, it essentially becomes a CD-ROM; It all comes down to how data or music is written to a CD-R vs. a CD-RW.
When your CD burner writes to a CD-R disc, the laser physically etches the data into the disc by exposing dots and dashes on a material somewhat reminiscent of photographic film.
When your CD burner writes to a CD-RW disc, your laser becomes less intense and creates dimples in a layer of dyes with in the disc. The reason some older CD players wont play CD-RWs is that the dimples don't reflect the laser as strongly as etches. The reason you can erase CD-RWs is that you can smooth the liquid layer over again and create dimples again, up to 1500 times.
Since the data burned onto a CD-R is bespoke to the actual disc, the only way to destroy the data is to destroy the actual disc.
The best way to destroy a CD-R disc is to place the CD, label-side up, on the pavement or gravel, put your foot on top of the disc and scrape the CD Backwards with your foot. This effectavely destroys the data layer and therefore, the data stored on it.
WARNING: Never, ever bend a CD to destroy it. I one time bent a skipping MP3 CD in the car once as it was bugging me, it shattered into a million pieces of sharp flying polycarbonate! I arived home with my hands bleeding and a car full of CD dust. For 2 weeks after, running the AC would result in a sprinkle of CD dust coming out the vents!ROM should be thought of as storage which is written and then cannot be changed. Once written the only way to destroy the data is to destroy the device holding the data.
A good example of ROM (Read Only Memory) would be a CD or DVD disc. Once written, the data on the discs cannot be changed, with the exception of Rewritables which were designed specifically for that purpose but even those cannot be re-written on the fly; they need permanent 'tracks' written to them, each time the data is changed which can be thought of as defined beginnings and ends to the data on the disc. (Re-Writables use a dissolvable chemical so that data can be 'smoothened out' and re-written as needed, whereas non re-writables just use a chemical film. Tiny holes burned into the chemical or film as data is written, when the computer reads the disc, it reads a pattern of binary 1s and 0s as it reads the pattern of gaps on the disc).
Solid state drives such as a lot of the smaller mp3 players or usb thumb drives are an example of EEPROM (Electronically Erasable Programmable Memory). The data on EEPROM can be manipulated electronically. Also in this category are SD Cards, Memory stick duos and similar, as well as the BIOS chip on a motherboard and firmware chips stored on many electronic devices. They are called solid state drives collectively because they are used for similar purposes as hard drives but have no moving parts.
- Hard drives (also known as Hard Disks) are not an example of ROM as they are designed to store and delete files a lot of the time on the fly. Even files stored on the hard drive permanently can be erased at the users discretion so anything on a hard drive even if given read only status in its file properties cannot be defined as ROM.
Why is the USB 2.0 PCMCIA buscard still showing that there's no Hi Speed USB?
Go to your mobo setup screen (usually hit the Del key at startup) and make sure the settings for your USB are correct. Sometimes manufacture settings have these set to lowest levels or even off.
Can you run 2 computers on 1 monitor using dvi for one and analog for the other?
you can get a device called a KVM (keyboard/video/mouse) switch which allows you to use 2 computers with a single monitor,keyboard and mouse and you can switch between the two computers.
The monitor has noway of deciphering the two signals coming in from the dvi and also the analog inputs. The monitor will only accept which input is set to priority. Which means you could use the monitor to make the switch by accessing the monitor settings and switching that way.
Nothing difference between the original or replacement laptop batteries
because the replacement laptop batteries have which is compatible for that original laptop.
The replacement battery is also which can suitable for other original compatible laptop almost same. but only battery pack which difference from original.
How much ram does a acer aspire 3000 have?
You can check the ram of any Windows computer by holding the windows key and pressing the pause break key on the top-right of the keyboard
1 How long does a power supply retain power after the computer is turned off?
A computer power supply has capacitors and can maintain power for a along time.
See:http://en.wikipedia.org/wiki/Capacitor#Hazards_and_safety
To what extent should a computer company be allowed to own machine architecture?
To whatever extent they want. You're under no obligation to buy their computers if you don't like the architecture.
Most computers use a standard 2032 type battery. These can be purchased at any drugstore, department store or electronics store. It is always a good idea to take the old battery with you to ensure you buy the correct battery.
PCIe and PCI
Can i upgrade my graphics card on a advent 7040?
You can upgrade/update your 'Graphic Card' on ANY laptop or computer 'Video Card' = 'Graphic Card' Search 'Video Card' for more help.
How does a magnet erase a computer or jump drive?
A magnet does not affect a computer other than the [mechanical] hard drives. Even then, you'd have to take it out and run it through a relatively powerful magnet for it to do anything. Flash drives, "jump drives", or "thumb drives" are a form of solid-state storage (just as SSDs are, but on a different level) and are not susceptible to electromagetic fields.
How do you build a multiple monitor computer?
If you haven't already, you will need to decide on the amount of multiple monitor displays you want or need. Picking a computer before you make up your mind about your display quantity is not recommended. This is because your graphics card configuration is dependent upon how many monitors you will be running.
Once you have decided the amount of monitors you want you can then select an appropriate computer system. You want to make sure that the RAM and the graphics card are 'up to snuff' with what you need your computer to do. You also want to make sure that all of the components going into your new PC are new and top of the line. Technology is constantly advancing, you don't want any parts that may have any new upgrades or have been discontinued.
Lastly is your hard drive and operating system. Computers that are going to be operating multiple monitors should come with at least a 500 GB hard drive. A 640 GB is recommended but you can start with the 500. The operating system is up to you. Some people prefer to stay with Windows XP and others have embraced the new Windows Vista.
Be sure to do your homework on all of the components that will be going into your new multiple monitor computer. You really need to have all the right equipment to drive the amount of monitors you are running. You wouldn't try to build a motorcycle with parts from a bicycle, would you?
I had some difficulty with this when I first decided to build my own multiple monitor computer. I found the guys at Multiplexpc.com to be extremely helpful. They explained all of the components to me and what exactly they did. I ended up purchasing my computer from them because they were just so helpful. Check 'em out!
A d-link router is a standard network router, one which was made under the brand-name d-link. In all important respects it is equal to a similarly equipped linksys or netgear router, but is a less expensive brand.
What is non maskable interrupt interrupt?
Non Maskable interrupts (such as those generated by power failure) cannot be blocked by the CPU.
Maskable interrupts are common device interrupts such as disk/network adapters interrupts which can be blocked by the CPU.
What are common symptoms of power supply problems?
you should be able to find one for $30 these days.
I am building a new gaming computer system and was wondering if it would all fit together? Cool Master Gladiator 600 Case
AMD Athlon ii X2 235e
Gigabyte GA-MA785GT-UD3H Motherboard
Corsair VS2GB1333D3 2Gb DDR3 RAM
XFX GeForce GT240 1GB Graphics Card
SeaGate 500Gb SATA ii Internal HDD
Creative SBSA35 2.0 Comp Speakers
AOC 936SW 18.5inch Monitor
Logitech Ultra Flat Keyboard
Lite On IHAS324 DVD-RW Black Drive
and Windows Vista Home Premium
What is input output multiplexing?
A multiplexer is a electronic device which allows you to electrically choose between more then one input.
By adding a multiplexing to input and output it allows multiple signals to share a single channel by choosing one signal at a time and thus cause them to share the channel.
See this Wikipedia article from Wikipedia: http://en.wikipedia.org/wiki/Multiplexer
~Josh
What is the name of the hardware that allows your computer to communicate with you?
The software is Speech Recognition.
