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Monday, November 29, 2010

Different Types of Computer Processors

Different Types of Computer Processors

Traditionally computer processor design and innovation has advanced at an exceedingly fast rate. As a corollary, the market for computer processors is vast and often times confusing to a first time explorer. However, learning the key feature sets and functions that set each processor apart from one another is not very difficult at all.
Since the inception of mainstream computing into the homes of society, but there has been consumer and commercial level computer processor manufacturers. The Intel Corporation is undoubtedly the first name when any consumer thinks of the word processor is mentioned. Intel has been producing the most top-line computer processors for several decades now. AMD or Advanced Micro Devices is Intel's only true competitor in the computer processor market producing computer processors, which rival the speed and power of Intel's.

When considering the architecture of a computer processor, there are really only a few key factors to consider. Whether the processor has a 32-bit or 64-bit core determines whether or not the processor can run your software correctly. The amount of on die processor cache memory is also of importance, as this integrated memory space is where processor instructions are held before execution. Finally, is the system a single, dual or quad core processor? While multicore processors do have their advantages there is still a lack of software able to utilize multicore processors.

Clock Speed
The clock speed of a computer processor determines the rate at which a processor executes instructions on data. Today this rate of execution is expressed in billions of instructions per second. Though having a computer processor with a high clock speed is advantageous, it alone is not the only factor that dictates overall system performance. Higher clock speeds increase all system tasks, such as web browsing, movie encoding, and system utilities like anti-virus software.

Computer processors must be maintained according to their manufacturer's specifications in order to perform at their full potential. All too often consumers will pick an expensive cutting edge processor while neglecting support hardware for their processor. Different processors require different power supplies, proper heat sink/ fan combos, and adequate memory in order to function correctly. Above all, different processors require different cooling solutions. Each processor has its own TDP (Thermal Design Power) which is an indication of heat output which must be dissipated.

Current Models
The most recent offerings from Intel and AMD are the Core i7 quad core and Phenom II quad core processors respectively. The Core i7 supersedes the Core 2 series of dual and quad core Intel processors and the Phenom II supersedes the Phenom I dual and quad core model AMD processors. Outside of extreme gaming or high-end 3D graphics applications, even the Phenom II and Core 2 older model processors are more than adequate for the home user and come at a much lower price point in most cases.

Saturday, November 27, 2010

How to install a TV Tuner Card

How to install a TV Tuner Card

A TV tuner card is a computer component that allows television signals to be received by a computer. Most TV tuners also function as video capture cards, allowing them to record television programs onto a hard disk.

Install TV Tuner Card:

1. Disconnect your computer's power cord.
2. Take off the left-side panel of the PC by unscrewing it with a screwdriver.
3. Look for an empty PCI slot (peripherals component interface) and remove its metal cover.
4. Set the TV tuner card into the empty PCI slot. You will hear a "click" sound once the card is correctly in place.
5. Fit the side panel back onto the PC.

Friday, November 26, 2010

Advantages and Disadvantages of External hard disk drives

Advantages and Disadvantages of External hard disk drives
External drives are arguably the biggest growth area in data storage of recent times. They offer the possibility of a readily transportable repository for all a user’s valuable data, documents, photographs, music and movies. Alternatively they can provide a destination for a user to backup their valued files to, in case the data held on their internal storage is lost, or the internal storage fails. But are they lulling users into a false sense of security?

They are being offered with ever increasing capacity and at ever decreasing prices. Many are advertised using ‘pence per Gigabyte’ prices as a lure. However a few notes of caution arise from the recent spate of external hard drives being sent for Data Recovery.

Thursday, November 25, 2010

SuperSpeed USB 3.0

As technology innovation marches forward, new kinds of devices, media formats, and large inexpensive storage are converging. They require significantly more bus bandwidth to maintain the interactive experience users have come to expect. In addition, user applications demand a higher performance connection between the PC and these increasingly sophisticated peripherals. USB 3.0 addresses this need by adding an even higher transfer rate to match these new usage and devices.
USB continues to be the answer to connectivity for PC, Consumer Electronics, and Mobile architectures. It is a fast, bidirectional, low-cost, dynamically attachable interface that is consistent with the requirements of the PC platforms of today and tomorrow.
SuperSpeed USB brings significant performance enhancements to the ubiquitous USB standard, while remaining compatible with the billions of USB enabled devices currently deployed in the market. SuperSpeed USB will deliver 10x the data transfer rate of Hi-Speed USB, as well as improved power efficiency.
  • SuperSpeed USB has a 5 Gbps signaling rate offering 10x performance increase over Hi-Speed USB.
  • SuperSpeed USB is a Sync-N-Go technology that minimizes user wait-time.
  • SuperSpeed USB will provide Optimized Power Efficiency. No device polling and lower active and idle power requirements.
  • SuperSpeed USB is backwards compatible with USB 2.0. Devices interoperate with USB 2.0 platforms. Hosts support USB 2.0 legacy devices.

Saturday, November 20, 2010

Types of Computer Hard Disks

Hard disk types

A hard disk drive (hard disk/hard drive/HDD) is a non-volatile storage device for digital data. It features rotating rigid platters on a motor-driven spindle within a protective enclosure. Data are encoded magnetically by read/write heads that float on a cushion of air above the platters.

Hard disk manufacturers quote disk capacity in SI-standard powers of 1000, wherein a terabyte is 1000 gigabytes and a gigabyte is 1000 megabytes. With file systems that report capacity in powers of 1024, available space appears somewhat less than advertised capacity.

The first HDD was invented by IBM in 1956. They have fallen in cost and physical size over the years while dramatically increasing capacity. Hard disk drives have been the dominant device for secondary storage of data in general purpose computers since the early 1960s.[5] They have maintained this position because advances in their areal recording density have kept pace with the requirements for secondary storage.[5] Form factors have also evolved over time from great standalone boxes to today's desktop systems mainly with standardized 3.5-inch form factor drives, and mobile systems mainly using 2.5-inch drives. Today's HDDs operate on high-speed serial interfaces; i.e., serial ATA (SATA) or serial attached SCSI (SAS).

1. IDE: Integrated Drive Electronics. IDE drives are also known as PATA drives (Parallel advance technology attachment)
2. SATA: Serial advance technology attachment
3. SCSI: Small Computer System Interface. SCSI is pronounced as skuzzy.
4. SAS: Serial Attached SCSI

Friday, November 19, 2010

Computer Power Supply

Computer Power Supply

If there is any one component that is absolutely important to the operation of a computer, it is the power supply. Without power supply, a computer is just an inert box full of plastic and metal. The power supply converts the alternating current (AC) line from your home to the direct current (DC) needed by the personal computer. In this article, we'll learn how PC power supplies work and what the wattage ratings mean.

In a personal computer (PC), the power supply is the metal box usually found in a corner of the case. The power supply is visible from the back of many systems (Also known as SMPS) because it contains the power-cord receptacle and the cooling fan.

Power supplies, often referred to as "switching power supplies", use switcher technology to convert the AC input to lower DC voltages. The typical voltages supplied are:
• 3.3 volts
• 5 volts
• 12 volts

Northbridge v/s Southbridge

Northbridge v/s Southbridge

The Northbridge is one of the two chips in the core logic chipset on a PC motherboard, the other being the Southbridge. In Intel chipset systems it is named memory controller hub (MCH) or integrated memory controller (IMCH) if equipped with an integrated VGA.
Separating the chipset into the Northbridge and Southbridge is common, although there are rare instances where these two chips have been combined onto one die when design complexity and fabrication processes permit it.

The Northbridge typically handles communications among the CPU, RAM, BIOS ROM, and PCI Express (or AGP) video cards, and the Southbridge.[1][2] Some north bridges also contain integrated video controllers, also known as a Graphics and Memory Controller Hub (GMCH) in Intel systems. Because different processors and RAM require different signaling, a Northbridge will typically work with only one or two classes of CPUs and generally only one type of RAM.
There are a few chipsets that support two types of RAM (generally these are available when there is a shift to a new standard). For example, the Northbridge from the Nvidia nForce2 chipset will only work with Socket A processors combined with DDR SDRAM, the Intel i875 chipset will only work with systems using Pentium 4 processors or Celeron processors that have a clock speed greater than 1.3 GHz and utilize DDR SDRAM, and the Intel i915g chipset only works with the Intel Pentium 4 and the Celeron, but it can use DDR or DDR2 memory.

Tuesday, November 16, 2010

How to install Gforce Nvidia Gaming Adapter

How to install Gforce Nvidia Gaming Adapter

The NVIDIA® GeForce offers a powerfully immersive entertainment experience designed for extreme high-definition gaming and video playback. Play the hottest DirectX 10 games with very high speed and watch the latest HD DVD and Blu-ray movies with brilliant clarity. Featuring next generation GeForce and PureVideo® HD technologies, the GeForce puts amazing graphics performance within your reach.

HD Gaming for the Masses
Get the most graphics bang for your buck with a GeForce. With a 90% performance increase over the comparable 8 series graphics card, PC gamers everywhere can now enjoy games at extreme HD resolutions without breaking their wallets.

NVIDIA SLI® Technology1: Delivers up to 2x the performance of a single GPU configuration for unequaled gaming experiences by allowing two graphics cards to run in parallel. The must-have feature for performance PCI Express® graphics, SLI dramatically scales performance on today’s hottest games.

Tuesday, November 2, 2010

Printer goes offline on reboot

On reboot computer, the printer in Windows 7 XP mode goes offline

1). In Control Panel, Printers, delete offline printers. If they wont delete, it may be because there are pending print jobs in the queue. Open the printer and Cancel the jobs..

2). In Printer properties, Ports tab, delete the previously installed printers (offline status) that appear as Client Side Rendering Provider under the Description column.

To do this, highlight the port, then click on Delete Port button. Click Apply.

3). Restart your PC.
4). Now reinstall the printers as follows:
         1). Open Control panel, Printers, and click Add a printer.

         2). Click Add a local printer.
         3). Select the "Use an existing port" radio button, and select LPT1: (Printer Port). Click Next.
        4). Install the printer driver. Mine were found in the list inlcuded with Vista. Select the manufacturer and the printer. Click Next.
          5). In the next window, accept the printer name or type in a new name. Leave the "Set as default printer" box unchecked. Click Next.
5). Vista should now install the printer. A window should open saying "You've successfully added printer name.

6). DO NOT Print a test page at this time, because nothing is connected to the LPT1 port on the laptop. Just press Finish. The printer you just added should appear in the Printers window.
7). Click ONCE on the newly added printer to highlight it, then right-click and open Properties.
8). On the Ports tab, click Add Port “select Local Port, then click New Port”

9). When the Port Name window open, Enter a port name as follows: \computername\printername (replace computername with the name of your PC acting as print server, and printername with the name of your printer). Click OK.
10). You should now have a new port listed on the Ports tab of the printer Properties, but now the Description should be Local Port, instead of Client Side Rendering Provider. Click OK.

11). Now you can go to the General tab, and Print a Test Page.

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