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A Circuit Board PCB, is used to mechanically support and electrically connect electronic components.
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Just as any mother is the best to nourish and knows how to take the complete care of her baby; in a computer device the motherboard plays the just right role of supplying the necessary components for the perfect functioning of the system. Since motherboard is the most important circuit board of any computer you need to know how to find out the best motherboard for your system.
Some good motherboards
When you are going to buy the best motherboard for your system price is very vital. You can choose either the board with great graphics or you can prefer concrete functioning rather than graphics quality. When the priority is the great performance of the motherboard with satisfactory graphics, the Asus motherboard of the 'M2A-VM' is good also available at the affordable price of seventy dollars. With this you have the opportunity of using the good quality AMD processor though not the most recent AM2%2B. From this board you can get the six aboard channel audio, DDR2-800 till 8GB, ten USB ports, and incorporated ATI Radeon can give consent to twin monitors.
For AMD motherboards, Asus won't dishearten you as they always keep the promise of the best performance for the high quality graphics card; memory as well as CPU is fast. And for such good performance you can get 'Asus M3A32-MVP Deluxe'. The 220 dollars priced board has compact features of double PCI-E slots, six PCI-E x1 ports, ten USB ports, DDR2-1066 of up to 8 gigabytes, HD audio and many more. When you are looking for motherboards for some lesser price around 180 dollars 'Gigabyte GA-MA790FX-DS5' is also wonderful. The features found are six USB ports, two PCI-E slots, DDR2 1066 of up to sixteen gigabytes, six USB ports, and also six SATA ports.
For the best motherboard the 'Asus Maximus Extreme' is a great choice when you are willing to pay the high price for motherboard. The functioning of the powerful CPUs from Intel is greatly supported by the motherboard from Asus. It has the features of SLI, processors of Intel Extreme, six USB ports, 8GB of DDR2-1333 and six connections for SATA. Other proficient motherboards are of Gigabyte Model GA-G31M-S2L at 65 dollars or less, the Gigabyte GA-X38-DQ6 for at 199 dollars, Biostar TForce TF7050-M2 available for 80 dollars and apart from these you can easily find lots more varieties of motherboards when you are searching for the motherboards on the internet.
What should you look for in your motherboard?
The main elements that make up the motherboard are the CPU or the processor, the socket for the motherboard, bus speed, chipset, system memory, bus speed, peripherals like printer, keyboard, mouse etc and you must get the motherboard which is compatible for supporting all the components well. So selecting the best motherboard can be a perplexing task. So it is better to get the proper ideas about the different motherboards and read about the reviews which can be a good guide for buying.
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Quartz watches and mechanical watches are both the most common seen types of watches currently. Merely from appearance, it's hard to differentiate a quartz watch perfect in workmanship with a mechanical one. In fact, quartz watches and mechanical watches differ in many aspects.
First, precision. A quartz watch's timing precision is about 100 times higher than a mechanical one. A quartz watch's daily error is limited into 0.5 second; a mechanical watch's daily error is about 45 seconds, quicker or slower according to the temperature changes.
Second, maintenance. A quartz watch doesn't need to be wound and almost needs no maintenance besides change of batteries every two years. However, a mechanical watch needs regular maintenance to keep its operational life span. And the movement can be repaired from scratch over centuries by able watchmakers.
Third, weight. For a quartz one, the movement and the gear wheel can be made of plastics in a thin, light and micro form. However, a mechanical watch's movement must be made of metals. Besides, the complex structure can hardly be miniaturized. As a result, it's weightier than the quartz counterpart.
Fourth, price. The plastic movement of a quartz timekeeper is easy to process and the circuit board can be produced massively, so the price is not high. However, with fine workmanship and low mass-production capacity, the price of a mechanical watch is fairly expensive.
Fifth, cultural taste. This is the most outstanding advantage of mechanical watches, which are now worn more for their aesthetic and emotional attributes than their basic timekeeping function. A fine mechanical watch states the owner's personality and status and brings the noble honor.
Six, life span. Caused by the problems of the circuit board and the plastic movement, a quartz timekeeper's life span is about 6 years, though some lucky ones survive 10 years. However, a fine quartz watch can serve a family for centuries due to its metal movement. As a result, many regard it as a family heirloom.
If you are going to buy a watch, the best choice is according to your personal preference. If you demand high on the timing accuracy and wear seldom, you'd better choose a quartz one. Generally, the mechanical watch's shockproof and waterproof abilities are better than the quartz ones', if you need the special abilities, you'd better choose a mechanical one.
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Most vehicles today have a remote keyless entry system installed, which allows the driver to access the vehicle without a key. Older vehicles can be upgraded by buying an after market product to have the same capabilities. After market devices tend to have more range because they do not fall under the same FCC rules concerning power output. In any case, there are ways to improve the effectiveness of the antenna in the vehicle.
It does not matter if you vehicle has an after market system of it came from the plant; in each case the receiver will have an antenna attached to it. Some times the antenna is on the printed circuit board (PCB) in which case the following does not apply. If the antenna is a visible wire that comes out of the receiver, you can try the following. Locating the receiver and antenna inside the vehicle may be tricky. If you have it may be possible to create a longer antenna, which would greatly increase the antenna height. Increasing the antenna height would improve performance and increase the range from your vehicle that the FOB will work. It may be tricky but there are cases where this is possible. Your aftermarket device may be able to accommodate a longer antenna as well.
The length of the antenna does matter if you are able to fabricate a new one. In North America, the keyless entry system operates just above 300mHz and 315 megahertz. This tells you that antenna length is just less than one meter, 95cm to be exact, would be the ideal antenna length (one full wavelength) for that frequency. If the antenna in your vehicle is 24cm or 48cm long, that equates to a quarter and half wavelength respectively. A full wavelength or 95cm would be ideal.
In most cases, this may not be possible however there are still some tricks to remember. Many variables will change the performance of the keyless entry system. Unless you have an aftermarket FOB that has much higher power output in which case you may never find that you have poor performance, try the following.
The farther away the FOB is from the ground the better. The ground will reflect the signal preventing it from reaching your vehicle. Holding the FOB over your head will yield much better results. If you remember from above roughly one meter is a perfect antenna for the FOBs at this frequency, keeping that in mind your body will also act like an antenna. A person just over six feet tall is almost two wavelengths which is even a better antenna. That tells us that a tall man will have better performance than a young child who is much shorter will. Also parking away from vehicles and other obstacles will improve your range. The more objects that are between you and your vehicle the closer you will need to be for the FOB to work.
The final trick that creates great performance is holding the FOB directly under your chin. This method works well even though it is less scientific why it does. In some cases, this works better than holding the FOB above your head. Trial and error is really the only way to make sure. The last resort is to check the battery in the FOB. The batteries are designed to last for many years but keeping a fresh one in there will keep your range performance high.
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