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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
What are three components that allow the processor to communicate with other devices?
the buss
the north bridge chip
the south bridge chip
What is a network card used for?
A network card is used to interface with a network. A network is basically a connection of PCs and possibly servers, but also refers to your connection to the Internet If you want to connect 2 or more PCs together or connect to the Internet you have to have a network card.
Can you plug a non powered USB hub into a powered USB hub?
Yes. A USB port is supposed to provide a specific amount of power for USB devices.
A non-powered hub does not provide the proper power, but is still useful for USB devices that provide their own power (some printers, some cameras), or those that need very little like thumb drives.
What is a pointing device name a popular pointing device?
A pointing device is an input device used to manipulate a graphical user interface on a computer screen. A popular example of a pointing device is the computer mouse, which allows users to move a cursor, select objects, and interact with software applications by clicking, dragging, and scrolling. Other examples include trackpads and styluses.
What are the uses of hardware?
The basic computer hardware are: Monitor, Keyboard, Mouse, Case, Motherboard, RAM, CPU, Harddrive. The monitor display's data on the screen (Your reading this on your monitor) The keyboard & mouse is used to navigate through out the computer (You used your mouse to open your web browser, Internet Explorer. You used your keyboard to find this website and ask your question) The case holds the most important parts of your computer. (That big box on the floor with the ON button and some lights) The motherboard connects all the components together, everything from your monitor to your keyboard and even your USB drive. (You can't see your motherboard as its inside your case) The RAM is your computers memory, it helps load programs faster and stores important information to be used later (You can't see your RAM as its inside your case). You CPU does all the calculations for you computer, everything on your computer is the result of a calculation by the CPU, even your graphics on your monitor and your pushing a key on your keyboard must go through a calculation by the CPU. (You can't see your CPU as its inside your case) The hard drive stores all your data and it stores your operating system(Windows). (You can't see your hard drive as its inside your case)
Can you add memory to a computer using an expansion slot?
Not RAM, the random access memory must be installed in the dedicated slots. You can add secondary memory (like another hard drive) in an expansion slot.
What is an Optical Character Reader?
An Optical Character Reader is a machine used--like at a Post Office, for example--to read particular data. I learned a lot about the Post Office's OCR machine and it reads the Zip Code and is capable of spraying the Bar Code onto the mail. Hope this helps! If I had more time, I would research it.it can also be seen in departmental stores to get the prices and description about products.
Where can one purchase an external video capture device?
There are many sites where you can buy caputure,video and editing cards for tv or gaming. There are huge auction sites like ebay.com, retail sites like amazon.com and electronic specialty sites like newegg.com
What are different Communication mediums?
I believe a communication media is a field (?) over which communication takes place. In a strict definition, communication media are air, water, vacuum, wire, cable, etc. But in a looser definition, it has come to mean things like the internet, email, books, cave paintings, radio, TV, telegraph, telephone, newspapers.
What does a CD-ROM drive use to read the information on a disk?
The data on a compact disc (CD) is stored on the disc as a series of tiny, almost microscopic bumps and lands. Each of these bumps represent a piece of information, though no specific information is directly stored. Instead, the bump is an indicator of data, roughly equivalent to a "1" in binary code (the lands, or flat surfaces on the CD, are considered to be the "0" in binary). A CD's bumps are so tiny that each one is only one half of one millionth of a millimeter long, far too small for a human eye or mechanical device to detect, but large enough for a laser to read.
When data is read from a CD, a laser directs an extremely fine stream of light onto the surface of the disc. The laser follows the data stream of bumps and lands from the inside center of the disc outward in a spiral direction, allowing the size and even the shape of a data CD to vary if needed. As the one millionth of a millimeter (one micron) wide laser light shines on the CD's data track, it reflects one pattern of light off of a bump and a different pattern off of a land area. The resulting reflections equate to a series of ones and zeros, or the binary language of computers. A special tracking system in the CD-ROM drive constantly monitors the laser and adjusts its path to ensure it follows the correct data path on the CD.
As the laser light is reflected off of the data stream in tiny bits of data (ones and zeros), the incoming reflection is measured by a light sensor and sent to a data processor in the CD-ROM drive. This processor interprets the ones and zeros to assemble bytes of data which can then be forwarded to the computer's main processor for interpretation. The computer interprets this data as it was originally written on the CD, whether as a complex computer program, a basic collection of files or even simple music. As technology progresses and processor speeds increase, the CD can be spun at higher and higher rates, allowing the data on the disc to be read and sent to the processor, interpreted and used more quickly.
What is main function of the chipset?
The chipset determines the type of processor the motherboard accepts, the type of capacity of RAM, and what sort of internal & external devices the motherboard supports. It serves as an electronic interfaces through which the CPU, RAM and I/O devices interact.
What computer case is best at cooling?
There isn't a computer case with the "best" airflow.
A computer that intakes air at the front and distributes this at the rear is fine...
Heavy Graphics = Side panel fan
CPU = Side panel fan/Liquid cooling.
Some are:
Silverstone RV02-E
The Cooler master 'HAF' series
Antec Lanboy Air
How do you disable USB ports in a computer?
There are five ways of blocking USB ports completely:
1. Block physically by using a USB Port Blocker such as available from LINDY Connection Perfection, or by improvising.
2. Block from registry in Windows
3. Block using GPEDIT.MSC if you are using Windows Professional versions
4. Block from BIOS
5. Block using 3rd party software
The first four methods above will completely block your USB ports and you won't even be able to use them for devices you may need. So, it is better to use a software solution which can allow your USB drives but block others and also allows you to use devices like printers and mouse. I evaluated a lot of USB blocking software but the best was uHook Personal. You can block all kinds of removable storage devices, password protect any kind of removable storage devices, set policies for authorized and unauthorized devices and can even monitor what files were copied on allowed devices too.
Other products available are usbnotify, usbmon, etc.
Answer:
In normal home environments, you can either block the USB ports from the BIOS, cover the ports, disable the drivers in Windows, or you can edit the Windows registry to block the use of USB.
However in corporate environments, you can setup endpoint security software to give and deny permissions to groups of users to safely allow the use of USB ports.
You can disable or block the USB port by downloading and installing free software like NetWrix USB Blocker. It can be used on local computer also, but you will need to enter the domain name as workgroup in order to block the USB ports on a local computer which is not connected to any network.
Block using 3rd party software
AccessPatrol is a software that will allow you to control the USB / External devices access of all the computers on your network from a central console.
NetWrix USB blocker is a free utility which lets you block any USB ports on one or more computer on your LAN network. It lets you apply a centralized USB blocking to prevent the virus spreading though pen drives, removable drives and other USB portable devices.
This tool can is the best easy to use tool for system admins which need to block all the USB ports on the network as a part to the security group policy on the network. It uses group policy so you cannot use this tool on some of the versions of windows like Windows XP Home and Windows Home Premium.
USB Lock RP and ST provide real time administrative control over all portable memory devices connected to a PC within your network. The Control may be placed on any PC within your network or at server level. Security is at machine level.
Why is your computer loud all of a sudden?
Some computers are just loud. Cheaper fans make more noise, and some systems don't make any attempt to reduce noise by throttling fans down.
If, on the other hand, your system -used- to be quiet, but has for some reason gotten louder during recent months... there is a possible solution.
Most new computers have a temperature sensor on the CPU (and on other heat-sensitive bits) a special circuit keeps track of this temperature and when it rises, increases the fan speed.
What happens is the heatsink (and fan) get clogged up with dust, so it dissipates less heat, the sensor detects this & cranks up the fan to compensate. Cleaning the dust out of your heatsink and fan may go a long way to quieting your computer.
You can get a can of compressed air at any office or electronics supply store. With the machine turned off & unplugged, open up the side panel & blow everything out.
Note: DO NOT use compressed air to blow inside your floppy, cdrom or DVD drives.
How do you set up your own wireless network?
It is different for an Apple and a PC.
For an Apple, you must have an airport card. That card will have the ability to pick up wi-fi signals, something you need. You would install the airport card near the battery. Once installed, just type in your password and router name in your settings under internet, and you should be able to connect.
What can cause a faulty power supply?
A faulty power supply does not supply any power at all to a computer or supplies incorrect voltages. Most of the time faulty power supplies are not serviceable and require replacement.
A wireless router is used to connect a computer, or network, to another computer or network. It works either through a broadband cable or a DSL (Digital Subscriber Line) internet connection. It uses radio waves to broadcast signals, and also to collect them. The wireless router's main function is to decipher the radio waves and translate them into terms that we can understand. It helps us to relay information from one place to another, or multiple places.
9 How many samples can be stored in 8 bits?
If 8-bits were used to hold one number, the sample range would go from -128 to +127. Since sound samples can be both positive and negative you would use this range instead of the "bit math" 0 to 255. If 8-bits were used to hold one number, the sample range would go from -128 to +127. Since sound samples can be both positive and negative you would use this range instead of the "bit math" 0 to 255.
How do you know if your soundcard is broken?
If the sound does not work, it is possible that the sound card is broken.
An OC12 is the equivalent of 4 OC3's or 12 DS3's. A DS3 Breaks down to 28 T1's. Therefore there are 336 T1's on an OC3.
If you go one step further there are 672 DS0's on a DS3 or 8064 DS0's on an OC12. a DS0 is a 64k Channel equal to a single POTS line.
http://techblog.intelletrace.com/what-is-a-ds3-hub/
Most newer netbooks do not include a optical drive because most programs that require installation medium such as a CD or DVD would most likely be too resource heavy for a netbook.
The entire purpose of a netbook is just as its name implies, a slower computer designed mostly for net (aka internet) access.
What are the voltages for a ATX power supply?
the ATX standard supplies three positive rails: +3.3 V, +5 V, and +12 V
Give the correct cable type for 100BasedT network?
10BASE-T can use CAT3 cabling or better, while 100BASE-T requires CAT5 or better (such as CAT5e or CAT6).
