Video Cards

A graphic card is often known as the video card or the display adapter. As a hardware component it outputs the images to a display. The video card is independently plugged into the motherboard as as an expansion card. This graphics card is separate from the Integrated Graphics Processor which is integrated into the motherboard chipset.

Video cards as opposed to the general view are not exclusively used for video games and have a broader applicability. To dissipate heat a heat sink, computer fan or a water block is used. IBM first introduced graphics card in 1981. The minimum standard for latest video cards is VGA or Video Graphics Array that allows 256 colors. As opposed to this the most advanced form of card displaying millions of colors at resolutions up to 2040*1536 resolutions is the QXGA or the Quantum Extended Graphics Array.

OUTPUT Devices

Output devices receive as well as displays output of information from computer. Printer monitor, projector, speakers are few examples of output devices. Printer takes data from the computer and creates a hardcopy of the same for users. The data can be text as well as images. Laser, Inkjet and Dot Matrix are some of the commonly used printers.

Monitors are image display hardware devices. The common forms available includes standard displays, LCDs, Flat panels, The most pricy part inside a monitor is the CRT or the cathode ray tube. Problems like no display, skewed images, black borders etc often baffle PC users.

Independent speakers when attached to the computers can really make listening music or playing multimedia games a really good experience. Different types of speakers include the standard 2-speakers, 2.1 speakers with 1 sub-woofer, 4.1 speakers, and 5.1 speakers.

Input Devices

The input devices of a computer can be of may types viz keyboard, mouse, webcam, microphone etc. The keyboard is the main input peripheral used by all computers. It allows for user input and interaction with the computer. Like your conventional typewriters, the keyboard has all the letters of the alphabet, numeric keys from 0 - 9 and additional special keys.

Computer mouse is a navigational input for users who want an alternative for keyboard. Invented by Douglas Englebart in 1963, it was first widely used in the Apple Lisa computers. The evolution of mouse technologies have led to several variants of mices like the mechanical mouse, optical mouse, optical-mechanical mouse. The latter one is the most commonly used one in all computers and Macintosh and is much more accurate than the mechanical mouse. More recent varieties include the Trackball, Touchpad, and Joysticks.

Webcam is a camera connected to a PC or server allowing the users to share pictures or videos across the internet. Below is an example of how a webcam looks:

A microphone allows you to record sounds and voices to your personal or office computer. The sound card back plate is used to connect the microphone component to the computer. These days integrated microphones come in all laptops and certain desktop models.

Networking

Networking involves having a set of computers connected to one another with ability to exchange data. Computer network is an integral part of our daily lives, with the most important reason being that of communication. The use of computer networking is to share resources like fax machines, printers, modems, files etc., and its other uses are database server, computer server, email, chat, internet etc. The computer to which the resources are attached is called the server and the other computers that access the resource are called clients. In peer-to-peer computer networks there are no servers.

The computer networks are classified, depending upon the size, as Local Area Networks (LAN), Wide Area Networks (WAN), Metropolitan Area Networks (MAN) and Personal Area Networks (PAN).

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Sound card

The sound card is an audio board that makes it possible for computer to send out audio signals through speakers or headphones. Sound cards come as a standard option with PCs today.

The major functions of the sound card include the following:

Audio CDs.

Audio conferencing.

Business presentations.

Creating and playing Midi.

Educational software.

Games.

Record dictations.

Voice recognition

Watch movies.

Storage Controllers

These are basically devices which retain digital data for computing and mainly include Hard Disk, CD-ROM drive, Zip drive and Floppy drive. RAM or Random Access Memory functions as primary storage while hard disks are commonly used as secondary storage alongside floppy disks, zip drives, flash memory.

A Hard Disk Drive is a fixed drive resulting in non-volatile storage on fast rotating platters with magnetic surfaces. It was introduced in 1956 as data storage for an IBM accounting computer. As times have evolved, applications for hard disk drive have expanded to include personal digital assistants, video-gaming consoles, digital audio players, digital cameras and digital video recorders. We can Fix Video Card Problems for you and will provide you the best PC Tech Support Experts to make you relex.

Data is primarily stored in a location called hard disk drive. Chassis, head arm, head actuator and platters form the main components of the hard drive of a computer. Computer interface is used to send and receive information via hard disk. There are various types of interfaces for hard drive like ATA, IDE. EIDE, RAID, SATA, SCSI, Serial ATA, Ultra ATA. Hard drive crashes are one area that pose a hurdle to PC users.

Hard drive capacity is usually measured in megabytes, gigabytes and terabytes. The hard drives even due to normal usage led to eventual failure as the at times breakdown is inevitable in the inner fragile device.

The CD-ROM drives are used to read the compact disc read-only memory discs. A CD is a pre-pressed compact disc that contains data accessible by a computer minus the writable option. The CD-ROM drive is connected to the PC via and IDE or USB interface. All CD-ROM drives come with a capacity to play audio and video cds with the help of right software.

The Zip Drive is an intermediate capacity removable disk storage system that was introduced by Iomega in the late 1994. Zip disks of 100 MB or higher capacity are run on these drives. With passage of time, rewritable CDs and DVDs replaced Zip drives

Floppy drives have been around since the time computing began. It is basically a data storage medium made up of a thin magnetic storage disk or floppy cased in a plastic shell.

Power supply

The Power Supply unit is a key component that transmits power to the computer. The Advanced Technology Extended (ATX) based power supplies have a switch that goes to the motherboard making it easy to turn the system on or off. A faulty or underperforming power supply unit often causes various problems like failure to power on, failure to boot, reboots, and Hardware Failures