The cache on your CPU has become a very important part of today’s computing. The cache is a very high speed and very expensive piece of memory, which is used to speed up the memory retrieval process. Due to its expensive CPU’s come with a relatively small amount of cache compared with the main system memory. Budget CPU’s have even less cache, this is the main way that the top processor manufacturers take the cost out of their budget CPU’s.
How does the CPU Cache work?
Without the cache memory every time the CPU requested data it would send a request to the main memory which would then be sent back across the memory bus to the CPU. This is a slow process in computing terms. The idea of the cache is that this extremely fast memory would store and data that is frequently accessed and also if possible the data that is around it. This is to achieve the quickest possible response time to the CPU. Its based on playing the percentages. If a certain piece of data has
For anyone that still has the huge computer monitor that takes up half your desk, this is a great time to consider choosing a flat panel monitor. They not only take up very little room on your desk, but also represent style and fashion that gives your office or room a modern look.
Since the flat screen monitor came on the market, not only has it gone down drastically in price but also the variety of flat screen monitors has increased. There is now a model and price range to suit almost everyone’s budget. When choosing a flat panel monitor, there are some things you should consider.
Prices on flat panel monitors vary by size and manufacturer so shop around and compare the prices to get a great monitor at reasonable cost. Prices vary but on average, the fifteen inch to nineteen-inch monitor’s average price range is $200 – $700.
If your monitor does not refresh or redraw itself at a high enough frequency, flickering occurs. When choosing a flat panel monitor, select one with a refreshing or redraw rate
An external hard drive is a hard disk drive (much like the one in your computer) that is placed externally, outside of the case. You can buy them pre-made, or purchase a hard drive and an enclosure, and make your own. They came in many sizes, are relatively inexpensive, and are well suited to perform various functions. In this article, I will detail 3 specific uses for your external hard drive.
For one reason or another, you may have chosen a computer whose storage capacity you’ve outgrown. It may be full to capacity with files and programs, and you need room to expand. So the first example is to use your external hard drive to add expandability to your computer. This is true in case all of your PC’s hard drive bays are full, and especially if you have a laptop which has only one hard drive bay.
A second example is to use your external hard drive as a shared storage drive. You can attach it to a PC, set permissions and share-ability, and
How can a computer be such an amazing gadget? To many people they just can’t be so amazed on how computers have changed the way we live. Computers can now be found in many sizes and shapes. Almost every home appliance seems to have their own mini computer located somewhere. From cars to buildings to almost every gadget there is, most of the time each one has a computer working to make them run and change the very way we live life.
First and foremost, the most important component of the computer is its processor. It is considered the heart of the computer that does all the calculating and processing. But with all that calculating and processing, the computer won’t be such a remarkable gadget if not for its amazing memory. Computer memory makes it possible to retain important information on a computer. Such data can be used again and again and retrieved when a certain stored data is needed. Without the computer memory, the processor will have no facility where to store its important calculations and processes, thereby making them useless.
There are different types of computer memory tasked to store different types of data.
CPU – Central Processing Unit
The brain of the computer. A lot of people like to call the entire computer case the CPU, but actually, the CPU is a tiny chip connected directly to the motherboard, with a big fan connected directly to it. Without the fan, the CPU would burn up very quickly.
There are two primary brands of CPU on the market right now, Intel & AMD. A better of the two is hard to state, but you can check Toms Hardware for more in depth hardware reviews.
One thing to note about CPU’s is that you can’t just slap any CPU into any Motherboard. The Motherboard must support your specific CPU, which can make upgrades very hairy, so typically, if you’re going to upgrade one, it’s a good idea to upgrade the other. See more on Motherboards on the Motherboard page.
There are also two different types of CPU’s, socket and slot. Socket snaps directly into the motherboard, with a fan directly attached, while slot has a casing which holds the CPU, with a fan connected to the casing. Again, there really is no better of the two, but Socket is
My goal, in the short space this article allows, will be to tell you how to upgrade from a CD-ROM, to a DVD burner.
First, unplug your computer, and disconnect all cables leading to the keyboard, mouse, printer, and monitor. Remove the computer’s side panel.
Before reaching inside the computer, discharge your body’s static electricity by touching metal. If you have one, use an anti-static strap that you can attach to your wrist, grounding the other end to an outlet.
Now, look at the back of your CD-ROM. You will see three cables connected to it. There will be a small audio cable, a large ribbon cable, and a power cable.
Unplug these carefully. The ribbon cable, and the power cable will be especially tight.
With the cables unplugged, now turn your attention to the sides of the CD-ROM. You will notice it is held in by two screws on each side. Remove the screws.
Warning: please do not use a magnetic screwdriver while working on a computer. Remember, your computer stores data magnetically. Think of the mischief it could cause.
After the screws are removed, slide the CD-ROM out the front of
The technology world is no stranger to format wars
Since the showdown between Betamax and VHS to the current struggle between HD-DVD and Blu-Ray, companies intent on owning technology standards are willing to spend big bucks persuading other companies to join their respective camps. Some companies do this for the royalties while others do it to increase the availability and distribution of their intellectual property.
A much quieter format war has been waged on the PC over the past ten years
The Universal Serial Bus standard, more popularly known as USB, was distributed with the Windows operating system in late 1996. The standard was jointly created by Compaq, IBM, DEC, Intel, Microsoft, NEC, and Northern Telecom and is now available on 90% of all computers manufactured today.
FireWire owned the high-speed market from the beginning
In 1995, the same year that the USB standard was being formalized, the Institute of Electrical and Electronics Engineers (IEEE) approved the IEEE-1394 standard, also known as FireWire or i.link, which had been developed by Apple. The fast speeds promised by FireWire (100 Mbps, 200 Mbps, 400 Mbps) was overkill for most peripherals not requiring a massive amount
A router is a computer device that receives or forwards data packets to and from the Internet towards a destination in the process called routing. A router is the essential component of the computer networking that enables any sent data to arrive at the right destination.
As an illustration, imagine that the Internet is the world and one computer is one household. Other computers connected through the Internet are households around the world. Say one household will send a letter to another household in any part of the world. The letter has an address right? And that address would determine the destination of the letter. But without one reading the address, the letter would not arrive to the right receiver. The letter also would not be able to reach the intended receiver if there is not medium. This medium would be the courier. And the courier of the computer data is the router.
A router (broadband router) is also a device that enables two or more computer to receive data packets from the Internet under one IP address at the same time.
Remember that to be able to connect to the Internet, a computer must
Firewire is a technogy for transferring data between computers or their periphial devices like external hard disk drives. In the early 1990’s Apple developed the technology that became Firewire. Its technical name is IEEE 1394, and there are a few updates that have improved transfer rates. The original was capable of about 100-400 Mb/s on a cable up to 14 feet in length.
Firewire made its debut on the PowerMac G3 and has since spread to many other products and computers. Its popularity was due to its simplicity and its great speed. USB was the closest competitor and it only claimed data transfer rates of about 12 Mb/s. The only problem was that USB had originally been made for all personal computers, not just Apple, and it had been out first so it was already in use. Firewire was widely used in the entertainment business and actually won 2001 Primetime Emmy Engineering Award in 2001 for the impact that it had.
Using Firewire for an external hard disk is a great application of the technology. The cord is relatively small so that portability can be maximized. Now, more than ever, we are sharing information and that
Cable modem technology has the ability to achieve speeds in excess of 1 Mbit per second, but modem cables are set to run at a lesser value. It is typically reduced to half of this number for downloads and around an eight of this number for upload. ISPs cap modems to ensure that the bandwidth is equally distributed among users and the upload cap in particular is designed to discouraged users in creating large servers.
Uncapping is defined as the concept of somehow eliminating the bandwidth limit many cable modem service providers impose. Some customers want to do this in order to improve the speed of their cable modem. This is obviously theft of service and may have seriously unpleasant consequences like imprisonment.
One way to do this is to set up a modified DOCSIS config file on a TFTP server hooked to the Ethernet side of the Cable Modem and tricking it to read the config file from the Ethernet side instead of the cable side. There are other ways but it involves highly technical skills in server technology and is too risky.
Cable modems service providers are fighting back with MIC, MAC/IP Checking
A tablet PC functions like a laptop, but doesn’t have a keyboard or mouse. Instead, it has a special touch screen, which receives information as the user writes on the screen with a specially designed pen. The pen can be used like a mouse, to select and open files or drag a file from one folder to another. The same pen can be used in place of a keyboard to write anything in any computer file. A tablet PC screen takes information only through this special pen. It does not take any information from your finger, as certain other touch screens do. If needed, a keyboard can also be attached to a tablet PC.
However, its main advantage lies in the fact that one doesn’t need a flat space to place a keyboard to use the computer. A tablet PC allows the user to work on it even while standing. Professionals such as doctors, salespersons, engineers, police officers and others who have to stand up most of the time while performing their duties can feel much more comfortable by using a tablet PC instead of a conventional PC or laptop. A number of companies are now producing
Of all the ways to make your computer faster, the easiest is to add more RAM. A new CPU might require changing the motherboard as well, so that socket types would match. Extra RAM only has to be plugged in. The entire process can be finished in minutes.
Often, the difference is noticed immediately. A computer that boots up sluggishly will load its operating system in a fraction of the time it previously took.
About 1 GB of RAM shows the most improvement for common applications. At this level, you’ll be getting maximum speed from most business programs, and be able to switch from one to the other with almost zero waiting time.
If you want to do video editing, 3-D animation, CAD, heavy duty gaming, and other sophisticated apps, get all the RAM your computer can hold. Video file sizes can be gigantic, so get your computer the memory it needs to handle it all. Plenty of RAM means your hard drive won’t have to work as much, shuttling parts of monster files about.
Perhaps the best thing about RAM is that it’s relatively cheap. Often, $50 or less will buy you a
Nowadays we sometimes hear people saying that they need to change door hardware. What does that really mean and why should you do this? Door hardware refers to any part (hardware) that can be added, change, modified in order to obtain some benefits. Any door (when purchased) comes with a special set of door hardware. It should be used to mount the door and is not necessarily esthetic. Because of this more and more people are turning towards different parts to modify or add to their door.
Most people will decorate and use door hardware for the main door of the house. Why do that? There are two big answers to the question. The first one refers to security. You might want to add door hardware in order to make your lock better and your door harder to break. The second one is purely aimed towards design. Some small door hardware parts can do wonders and can create a special appearance. It is not uncommon to add to the door. What is different is taking from it. Some people like the door to look as old as possible. This means that either the individual does not care
Liquid crystal display monitors have taken the computer industry by storm. To own a sleek and thin LCD monitor has become a status symbol among computer users. Manufacturers across the world are trying to roll out this compact monitor to fulfill the growing demand for this stylish and high-quality image-producing product.
Unlike CRT monitors, the LCD panels are only an inch thick without including the stand. These consume less power and don’t radiate a lot of heat when used. Moreover, they are popular because of their sharper digital display. A digital display will knock off the irritating ghosting effect and deliver sharp picture quality.
An LCD monitor has a very compact configuration. This gives a clearer picture and adds to the entertainment of watching movies or videos on the screen. Its slim size enables it to fit easily into less spacious places, making it the perfect choice for small offices or homes.
LCD display screens or monitors are quite expensive, which makes it difficult for everyone to choose it above the affordable CRT. You may have to shell out $300 for a 15-inch LCD monitor, whereas for a 17-inch CRT monitor you pay only around
In our world today, the quality of a personal computer is often measured only by its processor speed, memory capacity, and hard drive space and for gamers, the quality of the video card. Sometimes, the computer monitor will grab some attention, especially if it has an LCD screen. Seldom, however, do we think of a computer by its power supply. And seldom do we give them an upgrade, even if we have upgraded each and every other computer component.
But when the power supply is damaged or stops working, we have to think about it, or we have no computer period. The only solution is a power supply replacement.
There are a lot of computer power supplies available in computer shops, so finding one should not be difficult. Replacing your power supply with a new unit should also be easy. The hard part is selecting the power supply that your computer needs. There are different kinds of power supplies and each has different specs. For your computer to work properly, it must be equipped with the right one.
There are two basic things to consider whenever you are buying a new power supply for your
Computers are very powerful devices that if properly integrated with other electronic components, will make a very power electronic device or industrial machine. Not all kinds of computers can be combined with other electronic components to form another product. Desktop computers, for example, are simply too large to be fitted inside another electronic device. For such applications, you need a single board computer (SBC).
However, ordinary single board computers, are not enough for certain applications. Mission critical telecommunication applications, for example, need more than just a simple SBC. For such applications, a rugged SBC with some kind of supercomputing power is needed. Such single board computers are called high performance single board computers.
High performance single board computers are SBCs ,specifically designed of use in applications that require high reliability, functionality, serviceability and manageability. These computers have a superior computing ability and the capacity to support rigorous I/O operations. High performance SBCs often find use in aerospace, military, automotive, telemetry, scientific, medical, industrial control and transportation applications.
The “high performance” term in high performance SBCs has nothing to do with its size. Surprisingly, it also has nothing to do with the processor speed, although most
Computer cables can be data cables used to move data between various components such as keyboard, CPU, monitor, printer, scanner and other multimedia systems. These cables enable high-speed data transfers within the input and output components of the computer.
A computer uses different kinds of cable to operate. It needs an AC power cable, a high-speed serial bus connector, an USB cable, a digital video cable, and a modem connector cable. A new PC comes packed with all these cables. These cables are also sold as a single commodity and are readily available in the market.
All types of cables used in a computer have different purposes. The ac power cable is just an insulated conductor and gives power to the PC. The high-speed serial bus connector is a data cable used to transfer bits and bytes from the input devices to the output devices. USB cables are used to transfer data from other sources such as digital cameras, video recorders, mobile phones, mp3 devices etc. the digital video cable is used to transfer high resolution video contents from the computer to a TV. Modem connector cables are used to link the PC with Internet service
Computer microphones are used for recording and storing voice or music in computers in various formats like wave files and mp3 formats. The normal type of microphones cannot be used, as they need special connectors to use in computers. Not all computers come with built-in microphones. They are optional gadgets to be fixed at the back of the computer. These microphones are readily available at many retail computer stores. The price ranges from $10 to $500.
Recordings in the computers are done using record pads. They facilitate recording procedures and saving wave or mp3 file formats. They can be stored in computers or removable hard discs and can be retrieved at any time. Wave pads enable editing and modifying the data recorded in the record pads. This facility has gained more importance and has created a huge demand in the market.
These microphones are generally very useful while taking dictations and during video conferencing. Speed of the work increases, as manual typing is not required. They are available in many configurations and in various models such as wireless headsets, handsets, desktops, tablets, and hybrid or built-in types. Each type has its own pros and cons. The
A network consists of two or more computers linked together to share resources such as a printer or a scanner, exchange files, and enable electronic connectivity. Network cables are data transmission cables and are used to connect one network device to another. These cables enable high-speed data transfers between different components of the network.
Different types of network cables are used depending on the kind of network. The type of cable used for a network depends on the network’s topology, protocol, and size. If a network has large number of network devices, it will need cables that provide high speed and error free connectivity.
Some of the cables being used today are Unshielded Twisted Pair (UTP) cables, coaxial cables and fiber optic cables. The UTP cable is the most popular variety, largely used for school networks as it transfers data at 100 mbps. Coaxial cables have a single copper conductor at their center. A plastic layer provides insulation between the center conductor and the braided metal shield. The outer metal shield blocks out outer interferences such as lights, motors and other computers. Fiber optic cables consist of a center glass core surrounded by several layers of