Archive for April, 2011
Protect your business with Network Security Services
The confidential data security is considered to be the main support of the modern companies. You can experience various network problems during your work. The organization has to bear great loss of revenue due to network downtime, unauthorized intrusions, and service disruption. Therefore, network security technologies are required for network protection against any theft or misuse of business confidential information or data. It also guards from internet-borne viruses and worms.
With the increase of business requirement and complexity of network, the risk of external and internal attacks increases. Therefore, it is very important to maintain data integrity and protect information assets. The exposure of valuable and confidential data over the web may lead to your data vulnerable and volatile. The attackers or hackers can easily read your confidential data with the help of vulnerable applications. Web security management ensures to protect from any web attacks.
Hardware Price Compare Options
Hardware Price Compare Options
If you are planning to purchase any computer hardware like monitor, hard drive, mother boards, processors , drives etc, even if you need to upgrade your hardware time to time, to meet the rising needs of memory, in order to store more music and pictures, always compare hardware prices. Further, you want to increase the processing speed, every type of hardware is there to help you. Hardware has become an incredible part of your life.
Personal computer hardware
Power supply
Main article: Power supply unit (computer)
A power supply unit (PSU) is the component that supplies power to the other components in a computer. More specifically, a power supply unit is typically designed to convert general-purpose alternating current (AC) electric power from the mains (100-127V in North America, parts of South America, Japan, and Taiwan; 220-240V in most of the rest of the world) to usable low-voltage DC power for the internal components of the computer. Some power supplies have a switch to change between 230 V and 115 V. Other models have automatic sensors that switch input voltage automatically, or are able to accept any voltage between those limits.
Video display controller
Main article: Graphics card
Produces the output for the computer monitor. This will either be built into the motherboard or attached in its own separate slot (PCI, PCI-E, PCI-E 2.0, or AGP), in the form of a graphics card..
Removable media devices
Main article: Computer storage
CD (compact disc) – the most common type of removable media, suitable for music and data.
CD-ROM Drive – a device used for reading data from a CD.
CD Writer – a device used for both reading and writing data to and from a CD.
DVD (digital versatile disc) – a popular type of removable media that is the same dimensions as a CD but stores up to 12 times as much information. It is the most common way of transferring digital video, and is popular for data storage.
DVD-ROM Drive – a device used for reading data from a DVD.
DVD Writer – a device used for both reading and writing data to and from a DVD.
DVD-RAM Drive – a device used for rapid writing and reading of data from a special type of DVD.
Blu-ray Disc – a high-density optical disc format for data and high-definition video. Can store 70 times as much information as a CD.
BD-ROM Drive – a device used for reading data from a Blu-ray disc.
BD Writer – a device used for both reading and writing data to and from a Blu-ray disc.
HD DVD – a discontinued competitor to the Blu-ray format…
Floppy disk – an outdated storage device consisting of a thin disk of a flexible magnetic storage medium. Used today mainly for loading RAID drivers.
Iomega Zip drive – an outdated medium-capacity removable disk storage system, first introduced by Iomega in 1994.
USB flash drive – a flash memory data storage device integrated with a USB interface, typically small, lightweight, removable, and rewritable. Capacities vary, from hundreds of megabytes (in the same ballpark as CDs) to tens of gigabytes (surpassing, at great expense, Blu-ray discs).
Tape drive – a device that reads and writes data on a magnetic tape, used for long term storage and backups.
Secondary storage
Hardware that keeps data inside the computer for later use and remains persistent even when the computer has no power.
Hard disk – for medium-term storage of data.
Solid-state drive – a device similar to hard disk, but containing no moving parts and stores data in a digital format.
RAID array controller – a device to manage several internal or external hard disks and optionally some peripherals in order to achieve performance or reliability improvement in what is called a RAID array.
Sound card
Main article: Sound card
Enables the computer to output sound to audio devices, as well as accept input from a microphone. Most modern computers have sound cards built-in to the motherboard, though it is common for a user to install a separate sound card as an upgrade. Most sound cards, either built-in or added, have surround sound capabilities.
Other peripherals
Main article: Peripheral
In addition, hardware devices can include external components of a computer system. The following are either standard or very common.
Wheel Mouse
Includes various input and output devices, usually external to the computer system.
Input
Main article: Input
Text input devices
Keyboard – a device to input text and characters by depressing buttons (referred to as keys), similar to a typewriter. The most common English-language key layout is the QWERTY layout.
Pointing devices
Mouse – a pointing device that detects two dimensional motion relative to its supporting surface.
Optical Mouse – a newer technology that uses Light to track the surface under the mouse to determine the motion to be translated into cursor movements on the screen.
Trackball – a pointing device consisting of an exposed protruding ball housed in a socket that detects rotation about two axes.
Gaming devices
Joystick – a general control device that consists of a handheld stick that pivots around one end, to detect angles in two or three dimensions.
Gamepad – a general handheld game controller that relies on the digits (especially thumbs) to provide input.
Game controller – a specific type of controller specialized for certain gaming purposes.
Image, Video input devices
Image scanner – a device that provides input by analyzing images, printed text, handwriting, or an object.
Webcam – a low resolution video camera used to provide visual input that can be easily transferred over the internet.
Audio input devices
Microphone – an acoustic sensor that provides input by converting sound into electrical signals.
v d e
Basic computer components
Input devices
Keyboard Light pen Mouse Microphone Webcam
Output devices
Monitor Speakers
Removable data storage
Floppy disk Compact disc/CD Drive USB flash drive Memory card
Computer case
Central processing unit RAM Video card Sound card Motherboard Power supply Hard drive
Data ports
Serial port Parallel port Universal Serial Bus (USB)
Categories: Personal computersHidden categories: Articles needing cleanup from September 2009 | All pages needing cleanup | Articles with sections that need to be turned into prose from September 2009 | Wikipedia articles needing rewrite from September 2009
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Importance of computer repair service
The hardware system includes the above things. The software system is based on the operating system and also the software that are installed on it. computer support The total things are important to maintain the function of the computer. But not all time the computer perform like the new. Some problems arise with the pass of time. Some problems are regarding hardware and some come from software. Computer repair service includes all the things.
The main problem f the computer arises from the two major sites. One is from the hardware and another is from the software. The hardware problem comes from either from the power supply or misses setting of the hardware or damage of one or several hardware. Usually the power supply damage, loose settings, damage of the hard disk is the main problem of the hardware. There are some other things that are included in the computer hardware system. That are the monitor, keyboard, mouse, sound box, modem etc. these things are also included in the hardware system. These things can make problems that can associate with the main management. The monitor gets the damage of picture tube and also the power sockets. The mouse and keyboard are treated to use as single time. Either its malfunctioning then the buyers is advised to buy a newer one because of its low prize.
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