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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.
11,849 Questions
When you buy a new graphic card how do you install it?
It all depends on whether or not the graphic card is an "AGP" or "PCI" (if your computer is newer: 5 years or newer, you should have an AGP port)the easiest way to tell is if it is an "AGP" card the gold part on the bottom will have 3 segments, where as "PCI" has 1 or 2. Its Very easy to install...first power down your computer, then unplug all the cables on the back (not always neccessary, but to make sure you have no power coming in at all, you can't be too careful) open the access pannel on your computer, if it is a tower, then it should be on the left side looking at the computer. You might have to take the screws off of the back, just look at the left pannel, then look at the back if there are 2 screws (1 top 1 bottom) then you take those out and set them aside. Some brands are different but this is just a basic explanation. If it is a desk top model (lays flat) then there should be 5 screws on the back around the cover to remove. You should have purchased an "ESD" strap from the electronics store where you bought your card, but if you don't have one, then just ground yourself to the chassis before you touch anything on the inside. Make sure that your computer is on a non-conductive surface, I.E. Rubber mat, plastic desk...etc Metal is not a good thing to work on. Make sure that you are not doing this on carpet either...don't want a static charge to zap your new card and everything else you touch do you? Once you have your case open, look for the AGP port. It will be close to the top of the motherboard, usually near all of your onboard stuff...USB ports, Printer Port. This will be a female slot, sometimes brown in color. It will sit slightly farther back from the rest of the slots. Remove the old card (if there is one) if there is no card you will have to take off the protective metal cover off of the chassis. Insert your card into the slot, carefull not to force it. If you have to exert a lot of pressure, then you are doing it wrong. Be sure to apply even pressure to the front and back of the card while you are inserting it. Once it is in securly, use the screw that came off of the protective metal dust cover, (if it had one) to secure the card in place. If you didn't get on off of the dust cover, then the box that the card came with should have one. Leave the case off, and plug only your power cable, keyboard, mouse, and monitor back in. Start your computer up and install the software that came with the card, restart, once your computer comes back up the way it should, shut it down, put everything back together, and enjoy!
A ROM is a copy of a game downloadable online. A BIOS is a file used to make an emulator work properly.
Why won't world of warcraft work on my new dell inspiron 1530?
If you are running Windows Vista you may need to tone down your security setting or check for updates on your Vista. When Windows Vista came out it was causing alot of issues with online gamers. There was even a time where no one could access Counter Strike who had Windows Vista.
Do you need portal to play the portal prelude?
In order to play the mod Portal: Prelude, you do need to have Portal.
How do you calculate your computer system speed?
Speed matter when it comes to computing. With new computers costing upward of $1,500, you will naturally want to ensure that you are getting what you paid for. Computer speed can be calculated through a number of different ways, but all of these methods can provide a reasonable approximation of how fast your computer is running. Many of these methods can also let you know how quickly your computer is running when compared to similar models, letting you know whether you found a bargain or a lemon.
steps
1. Locate the basic speed of your computer by right clicking on the "My Computer" icon and selecting the option for 'Properties.' This will list the processor speed and onboard memory amounts of your machine, allowing you to see whether they match up with the promised manufacturer specs. Additionally, if you are running either Windows Vista or Windows 7, the screen will contain a general performance rating, allowing you to ascertain how capable your computer is of running the operating system.
2. Download the run the Sandra test (linked below in Resources) to determine how fast your computer's subsystems are when compared against similar models. You will be able to judge your computer's memory speed, hard drive speed, network speed, processing speed and all other salient characteristics of your machine. It will also allow you to compare your computer's results against the results of similarly equipped computer. The test itself is free to download, making it a bargain when it comes to calculating computer speed.
3. Use the SuperPI program (linked below in Resources) to calculate your overall processing speed compared against the most powerful computers in the world. The SuperPI program will calculate the number PI to 4,294,960,000 decimal digits, which will take most computers a fairly substantial amount of time.
What is difference between charger and smps?
SMPS: Switch Mode Power Supply - specifically refers to switch mode power supplies which are supposed to be more efficient by using a much higher frequency than mains on the primary winding of the transformer. Charger could refer to either a SMPS or a conventional transformer which operates at mains frequency. For charging batteries outside of the laptop, both will have extra circuitry.
A2
Switched Mode Power Supplies, do not use transformers to change the voltage. This makes them lighter and more efficient.
They chop up the rectified mains into small pulses and then charge a capacitor. This is all controlled precisely by electronics. Altering the pulse width can control the current demand and regulate the output voltage.
When they are off load (battery charged and computer off) they draw minimum current from the mains. As the load varies, a smps can cope with changing current and yet keep the voltage accurately within specification.
Laptop chargers use this process instead of a transformer. This keeps the weight and bulk down. A transformer capable of handling 4 to 6 amps at 20volts would be very heavy, bulky and more expensive.
Name two driving factors in the development of computers?
The main driving factor for the development of computers was the needs of the United States defense department. The second driving factor was the United States space program.
A bootable CD has an operating sytem (usually a form of Linux or Windows) copied to the CD starting at track 0 on the CD. If your computer has a bios that defines one of your CD drives in the power on/restart boot sequence, you can boot your system from such a CD. Bootable CDs are used by developers/software companies to install Windows and Linux onto your computer's hard drive. Bootable CDs are also used by some anti-virus products to allow a "for sure" clean scan capability on a possibly infected system.
Bootable CDs are activated by placing the CD in the CD drive, powering the computer down, a then powering the computer back on (cold boot).
The power on boot usually follows a sequence of 1) check floppy drive for bootable disk, 2) check CD drive for bootable CD, and then 3) boot from designated hard drive.
A parallel connector, or parallel port, is an interface used to connect a computer to some external peripheral. An example of things that can hook up to a computer using a parallel port include a printer and/or a scanner. More recently, the USB interface has become extremely common and most types of devices that used to commonly hook up via parallel port now hook up by USB instead.
EOL terminology is also related to fire alarm systems. It is the end of line resistor that is in each pull station loop. It is used to put a load on the circuit so that each circuit draws a current. This in turn is how a trouble is monitored, if the circuit gets opened a trouble alarm will sound notifying maintenance that the circuit is inoperative. First thing which I am familiar with, which kinda goes back to the "older" days, is that EOL = End Of line. The term is largely archaic outside the bounds of mainframes.
For home computers, the "EOL" is usually "LF"+"CR", or linefeed (advance to next line) + CR (archaic but still in use - Carriage Return, which moves the cursor to the beginning of the line), thus "LF+CR" is used most often in DOS and Windows applications while some applications and/or operating systems treat just the "CR" to mean both... Go to next line AND go to the beginning.... basically the exact way the CR on a typewriter works. Hitting "CR" on a typewriter both advances the paper one line, and moves the carriage, or "typing spot" to column one.
Wow, the old days... heheh
it is used to supply power to motherboard and other peripherals
How wireless internet gateway works?
A wireless network card works by communicating with Wi-Fi routers and hotspots via radio signals. These Wi-Fi sources then communicate with the internet itself with the same type of signals.
What is the purpose of PCI slot?
I don't know if I have all of the information on how it works, but I do know some about how to do it. Well, first off, you need a PCI compatible motherboard. Second, you need 2 PCI compatible video cards. Then you stick them in the slots, then there is this thing that connects them together and that's Really all I know. For Further info, contact computer professional Logan at Logan@tiger.tv
What is internet card and network card?
An internet card is something that allows you to surf the World Wide Web (www)
A network card is a local piece of equipment that allows you to connect to other computers on the network.
What are the five primary categories of microcomputers?
1. Input device
2. Unit Processor
- consists two parts: central processing unit (CPU) and main memory
- CPU is divided into two main parts: a control unit and arithmetic/logic unit + registers
3. Auxiliary storage device
4. Output device
Cheers,
Rajz
Does a hp pavilion ze4900 have built in wireless?
Some do. In the specs it is listed as optional:
Optional HP ev2200 1xEV-DO Broadband Wireless Module (requires Verizon Wireless Service), optional HP hs2300 HSDPA Broadband Wireless Module (requires mobile network operator service); Intel 802.11a/b/g/draft-n, a/b/g, b/g, Broadcom 802.11a/b/g/draft-n, a/b/g, b/g, Bluetooth 2.0, HP Wireless Assistant
All of them would be classified under "hardware" although the other devices connected to the computer would be classified in the subcategory "peripherals".
What is the difference between a real keyboard and a virtual keyboard?
A normal keyboard has physical keys, generally made of plastic, that you can press. A virtual keyboard is just a picture of keys, displayed on a pressure sensitive screen. When you use it, you are not pressing any actual keys, you are just pressing specific locations on the screen.
What is the best PC monitor ever?
I'm unsure of the brand you're looking for, but a 16 inch width+height, with TruBrite, is my recommendation.
What is the easiest way to tell if a usb port on a notebook is using the usb 3.0 standard?
- It will have the SuperSpeed (SS) next to the network symbol, then the USB is a SuperSpeed USB 3.0. If you don't see the "SS", the USB is the older, slower, USB 2.0.
What is internal interrupt and external interrupt and software interrupt?
Internal Hardware interruptions
Internal interruptions are generated by certain events which come up during the execution of a program. This type of interruptions is managed on their totality by the hardware and it is not possible to modify them.
A clear example of this type of interruptions is the one which actualizes the counter of the computer internal clock, the hardware makes the call to this interruption several times during a second in order to maintain the time up to date.
Though we cannot directly manage this interruption, since we cannot control the time updating by means of software yet it is possible to use its effects on the computer to our benefit. For example to create a virtual clock updated continuously we only have to write a program which reads the actual value of the counter and to translate it into an understandable format for the user.
External Hardware Interruptions
External interruptions are generated by peripheral devices, such as keyboards, printers, communication cards, etc. They are also generated by coprocessors. It is not possible to deactivate external interruptions.
These interruptions are not sent directly to the CPU but they are sent to an integrated circuit whose function is to exclusively handle this type of interruptions
Software Interruptions
Software interruptions can be directly activated by the assembler invoking the number of the desired interruption with the INT Instruction.
The use of interruptions helps us in the creation of programs and by using them our programs gets shorter. It is easier to understand them and they usually have a better performance mostly due to their smaller size. This type of interruptions can be separated in two categories: the operative system DOS interruptions and the BIOS interruptions.
The difference between the two is that the operative system interruptions are easier to use but they are also slower since these interruptions make use of the BIOS to achieve their goal, on the other hand the BIOS interruptions are much faster but they have the disadvantage that since they are part of the hardware, they are very specific and can vary depending even on the manufacturer brand of the circuit.
The election of the type of interruption to use will depend solely on the characteristics you want to give your program.
Since we shall use interrupts for data recovery programming with the help of C language via Interrupt handling with C, we shall discuss only Interrupt 13H, Interrupt 13H Extensionsand Interrupt 21H routines specially. It is not so important to discuss all of the other interrupts and their functions because in C language, easier functions are available to perform most of those tasks. However, the knowledge of Interrupt 13Hand its Extensions is must, for data recovery programming.
What is the biometric scanner?
A biometric scanner is a digital scanner used for imaging biological details. The phrase biometric scanner refers to the various fingerprint readers, palm scanners, retina scanners, and voice scanners used to verify identification.
