Hardware

How to change MAC-Address in Windows Registry

October 16, 2011

MAC-Address is the hardware Network Address for the NIC which is unique for the system. However, there may be time when you need to change the MAC-Address for administrative purpose on a network. Some of the device drivers come with an option to change it from the device properties but not all (like my Broadcom [...]

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BIOS Beep Codes

April 15, 2011

When a computer is first turned on, or rebooted, its BIOS performs a power-on self test (POST) to test the system’s hardware, checking to make sure that all of the system’s hardware components are working properly. Under normal circumstances, the POST will display an error message; however, if the BIOS detects an error before it [...]

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The cache

March 14, 2011

Speed conflict The CPU works internally at very high clock frequencies (like 3200 MHz), and no RAM can keep up with these. The most common RAM speeds are between 266 and 533 MHz. And these are just a fraction of the CPU’s working speed. So there is a great chasm between the machine (the CPU) [...]

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IRQ (Interrupt Request)

March 14, 2011

Stands for “Interrupt Request.” PCs use interrupt requests to manage various hardware operations. Devices such as sound cards, modems, and keyboards can all send interrupt requests to the processor. For example, when the modem needs to run a process, it sends an interrupt request to the CPU saying, “Hey, hold up, let me do my [...]

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Little About Multi-Core CPUs

March 12, 2011

In the computing industry there is a major shift afoot. Over the next few years you will see your networks overtaken by multi-core machines. This will affect many aspects of your network, from licensing and software development costs, to the entire focus of your network architecture. In this article I will help illustrate why the [...]

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Little About Computer Motherboard

March 10, 2011

The motherboard (mobo for short) is the most important part of a computer and is the main circuit board. Everything connects directly or indirectly to it. To become familiar with motherboards, you need to know and understand their parts. PC motherboard components differ depending on the manufacturer and model. However, all have the following primary [...]

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Little About Central Processing Unit (CPU)

March 10, 2011

The Central Processing Unit (Normally called a processor or CPU) is the brain of the PC. It executes instructions, allowing a computer to perform all kinds of tasks. From burning CDs or DVDs to something as simple as a mouse click, the CPU is always at work. Processors consist of two parts: The Arithmetic Unit, [...]

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Little About Computer Hard Drive

March 10, 2011

Every computer must have a hard disk drive (commonly called a hard drive, hard disk, or abbreviated HDD). Your operating system is stored on the hard drive. Of course any other file can be saved there too. It is the main location where people save data. Having adequate hard disk storage for your needs is [...]

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Little about CD and DVD Drive

March 9, 2011

Most people with a computer want to preserve their data at some point. Saving to a hard drive is fine, but if it becomes damaged, retrieving your data could be impossible. Moreover, when it comes to music and movies, you might want to listen or watch them away from your PC. This page explains types [...]

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Little about Computer Ports

March 9, 2011

Just having a computer itself is not enough. You must have some way to attach external devices. Let’s face it, without a monitor, printer, mouse, and keyboard, a computer would be completely worthless. All of the aforementioned devices and a host of others have to connect to a PC or a laptop somehow. Computer ports, [...]

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Basic Computer Troubleshooting

March 9, 2011

Troubleshooting computers can be a little frustrating and a little tricky. With so many parts and software installed, any number of things can go wrong. But when (not if) something happens, this is the best opportunity for you to learn-of course provided that you have a few basics under your belt. Nothing beats experience. The [...]

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Little About Binary and Hexidecimal Conversion

March 9, 2011

What are binary numbers? The binary number system is when only two numbers are used – 0 and 1. It is also called base 2. The computer number system is base 2. Our number system is referred to as decimal or base 10 because we use 10 digits (0 – 9) to form all of [...]

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PCI and PCIe In Computer Hardware

March 9, 2011

PCI (Peripheral Component Interconnect) expansion slots came on the scene in 1993. As I stated on another page, expansion slots are a means by which you can add different types of expansion cards, such as a sound or video card, to enhance a PCs functionality. Before PCI, there were the now obsolete ISA slots. PCI [...]

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Little about Computer Video

March 9, 2011

On the “Sound” page I talked about how advancements in audio technology make our PC experience enjoyable. Well, the same can be said about good video. People love a good, clear picture, whether it’s on a television or a monitor. When it comes to computers, graphics card technology has come a long way and is [...]

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Little about Computer Audio

March 9, 2011

No computer is complete without sound. From listening to our favorite tunes to playing the latest, most popular video games, sound makes our computer experience fun. All this is done with a sound card. In the natural world, sound travels in waves. We refer to these waves as analog. Computers only understand digital, or 1′s [...]

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How To Install a Computer Power Supply

March 8, 2011

To install a power supply is really quite easy. It fits in the top back of the case. First, orient the holes on the power supply to those on the case. Then, place the unit in the space provided and slide it in until the screw holes are aligned. Secure it by screwing it in. [...]

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