Online computer Repair service is a big business today for experts. They have vast knowledge of computer problems and they have expertise to solve it efficiently. But we have to choose them wisely means we should do proper research before approaching them for any computer service. Some of the tips which should be in mind before choosing them are:
In today's busy life and busy schedules, it's hard to find free time to go personally to computer technical expert and tell them about the problem. Now a day we normally have habit of searching online repair shops regarding such type of problems. Online technicians can also solve problems through remote access and you don't need to go to them personally.
When we purchase a computer or laptop then there's occur a problem at some point of time. Then we need an expert who can solve the problem. We first search on Internet in our area like a person who lives in Canberra Australia will search for Computer Repair Canberra. But one thing has to be care taken of that a repair company should be choose wisely like the company have good reputation in such type of services, we can also find reviews regarding their services etc. From that we can take an idea about should we call to them or not.
There are some other things which should also be care taken of before hiring them like cost of services means total budget, duration of work etc. There are some companies also who give 100% guarantee of work satisfaction or if you are not satisfied then full money back guarantee. We can choose such type of companies because they have high goodwill in the industry and they don't want to lose it in any way.
Remote computer services will be provided to home users as well as business owners depends on the computer problem and preference. Some of the basic problems can be listed as:
• Slow starting and slow shutdown. Slow software performance.
• Simple Virus problems
• Malware problems
• Slow browsing and Internet surfing
There are number of companies online to serve solutions of computer problems, we just need to choose them wisely according to our preferences.
Jacob provides information regarding computer repair experts. For more information regarding technicians in Australia region you can visit at canberra computer repair or computer repair Canberra anytime.
Sunday, September 12, 2010
Types of Internet Routers - Does it Matter Which One I Buy?
Today, the market is just flooded with choices as far as wireless routers go, and here you are in the middle of all this, trying to figure out what 802.11b/g/n means, what difference do multiple antenna make, and why similar looking routers are so differently priced. I will try to navigate you here, while keeping only your interest in mind because your need is what matters most when it comes to getting the right router. Before we begin, ask yourself these questions first:
a). There is a router & there is a modem-router (built-in DSL modem, so you can get rid of your old modem and get rid of the associated wires and power supply, but do return it to your ISP)
b). what range & Speed you are looking for?
c). what type of equipment are you planning to hook up right now and in the foreseeable future?
d). your budget.
e). would you have it sit on the desk or mount it on the wall/ceiling?
Alright, so here we are trying to find answer to your questions, now do keep in mind, while there are good routers and bad routers, you need to watch out your needs, instead of looking for just the best one in the market.
what is the 802.11b/g/n?
i will not go into deep details, to keep it simple to understand, i will just give you an idea: if you are fine with a speed that will go at max 54Mbps (it's megabits, not bytes FYI), then 802.11g is good enough for you, don't bother with 802.11b, it's old tech and no longer feasible to buy, plus new routers are all backward compatible, means 802.11n will have a/b/g as well in most cases.
why i say 54Mbps "max" is because you would require a capable wireless network card in your laptop/pc, and a close enough distance to the router, the further you are from router the lesser the speed.
The 802.11n will give you a very good speed and almost longer distance coverage, while 802.11b can be as good as a cordless phone, 802.11n can give you almost double the range (70 meters). if you can, then go for a 802.11 a/b/g/n router, meaning that you are picking latest tech. and future-proofing your investment.
if you need to mount it or you want to have a whole lot of devices or if you are planning for a business which has a lot of employees carrying wireless devices, then go for a secure institutional router, or one that can mount on ceiling or wall.
Check the interface on a simulation website for the model you choose so that you know if you will be happy configuring and using it, most have a well designed interface but some can just go offboard.
Other Features
Firewall: you would love to have this feature, you may turn this off, but this is a must, and a good router firewall is indispensable.
Mac Filtering: This feature allows you to only have the selected devices connect to the router, so if you want to filter all Mac addresses other than your laptop, nothing else will be able to join that network.
Built in device support: some routers have support for a network storage, like external HDD, a print server, or flash drives.
Ethernet ports: ensure you get at least 4 ports, some routers have it missing, with just 1 port, so be aware.
Game mode: this feature allows gaming traffic to run on priority and also have games pass through firewall without spoiling your gaming mood:-)
one click configure: some would have a one click button to enable easy configure mode to enable you to hook up devices without any trouble, but this is not usually a secure way to connect.
Security support: routers come with WEP, WPA security, today you should not pick anything less than the WPA as WEP is weak and suspect to hacks and security holes. WPA2 and enterprise should be the support you should look at.
Role mode: some routers have a switch system or firmware control to function as a router, repeater, or access point, router connects wired and wireless clients, access point connects to another routers and just connects wireless clients, and a repeater would just act as a range extender to another wireless router.
Other firmware features:There are a lot of other features like parental filters, filtering out unwanted sites, listing sites you do not want to visit, or just listing sites that you only want to visit, you can in fact hook up a router in access point mode so your kids can have a separate hardware firewall conditioning traffic going to their mobile devices.
To sum it up, you need to really look at the features above and anything specif what you may need and compare with whats in the market to decide what you need and what's best for you, there is only 1 perfectness in this situation, your need, and you need to find the router matching it.
you are welcome to email me in case you need my advice, and i will be happy to help.
a). There is a router & there is a modem-router (built-in DSL modem, so you can get rid of your old modem and get rid of the associated wires and power supply, but do return it to your ISP)
b). what range & Speed you are looking for?
c). what type of equipment are you planning to hook up right now and in the foreseeable future?
d). your budget.
e). would you have it sit on the desk or mount it on the wall/ceiling?
Alright, so here we are trying to find answer to your questions, now do keep in mind, while there are good routers and bad routers, you need to watch out your needs, instead of looking for just the best one in the market.
what is the 802.11b/g/n?
i will not go into deep details, to keep it simple to understand, i will just give you an idea: if you are fine with a speed that will go at max 54Mbps (it's megabits, not bytes FYI), then 802.11g is good enough for you, don't bother with 802.11b, it's old tech and no longer feasible to buy, plus new routers are all backward compatible, means 802.11n will have a/b/g as well in most cases.
why i say 54Mbps "max" is because you would require a capable wireless network card in your laptop/pc, and a close enough distance to the router, the further you are from router the lesser the speed.
The 802.11n will give you a very good speed and almost longer distance coverage, while 802.11b can be as good as a cordless phone, 802.11n can give you almost double the range (70 meters). if you can, then go for a 802.11 a/b/g/n router, meaning that you are picking latest tech. and future-proofing your investment.
if you need to mount it or you want to have a whole lot of devices or if you are planning for a business which has a lot of employees carrying wireless devices, then go for a secure institutional router, or one that can mount on ceiling or wall.
Check the interface on a simulation website for the model you choose so that you know if you will be happy configuring and using it, most have a well designed interface but some can just go offboard.
Other Features
Firewall: you would love to have this feature, you may turn this off, but this is a must, and a good router firewall is indispensable.
Mac Filtering: This feature allows you to only have the selected devices connect to the router, so if you want to filter all Mac addresses other than your laptop, nothing else will be able to join that network.
Built in device support: some routers have support for a network storage, like external HDD, a print server, or flash drives.
Ethernet ports: ensure you get at least 4 ports, some routers have it missing, with just 1 port, so be aware.
Game mode: this feature allows gaming traffic to run on priority and also have games pass through firewall without spoiling your gaming mood:-)
one click configure: some would have a one click button to enable easy configure mode to enable you to hook up devices without any trouble, but this is not usually a secure way to connect.
Security support: routers come with WEP, WPA security, today you should not pick anything less than the WPA as WEP is weak and suspect to hacks and security holes. WPA2 and enterprise should be the support you should look at.
Role mode: some routers have a switch system or firmware control to function as a router, repeater, or access point, router connects wired and wireless clients, access point connects to another routers and just connects wireless clients, and a repeater would just act as a range extender to another wireless router.
Other firmware features:There are a lot of other features like parental filters, filtering out unwanted sites, listing sites you do not want to visit, or just listing sites that you only want to visit, you can in fact hook up a router in access point mode so your kids can have a separate hardware firewall conditioning traffic going to their mobile devices.
To sum it up, you need to really look at the features above and anything specif what you may need and compare with whats in the market to decide what you need and what's best for you, there is only 1 perfectness in this situation, your need, and you need to find the router matching it.
you are welcome to email me in case you need my advice, and i will be happy to help.
Touch Screen Technology - Living in the Digital Age
Touch screens are amazing and wonderful trends in the electronic market. It has evolved in a more feasible and stunning form for users. While using touch screen accessories, they can easily move from one menu to another in mobile phones, LCDs, iPhone and iPods by touching their screen. There is no need to press button or use additional options like mouse, joy stick and keyboard. This attractive technique allows computer users to select, open, copy, move things by just placing your fingers on the screen. It was first used in the Tablets PCs that made it quite popular in the market. Today, we can have fully functional touch screens accessories available in the market.
You will need a desktop to finish all your works even if you get a Tablet PC. It proves expensive to buy two computers and manage work in a proper way. While buying a touch screen pc, you can easily manage your work because it provides multi-functional platform to users. These touch screen computers are alternate to both desktop and touch screen notebook. They do not need additional mouse, keyboards, CPU to connect. They can offer you all the functions available in a desktop computer.
Most of the touch screen desktops are expensive, but they provide amazing functions and features to users. They use powerful processors to generate more power to work. There are different brands of accessories available in the market. The first one you need look for is from the HP pavilion. HP offers touch screen computers that include Intel dual core processors with a huge memory of 500 GB. These computers have connectivity features through Wi-Fi. HP touch screen computers are handy for users as they are easier to control than the desktops. They can be priced a little high but these products are really worth of high price.
There are other brands offering same products with different features. One is from Kortek Company. They feature almost the same as HP and their devices come into different sizes. You can choose the perfect size that will suit to you. Visible offers digital products in smart size but, their specifications are almost same.
This feature in one desktop can run Windows operating system, Windows XP. Networking activities can be done using these devices such as Wi-Fi and other connectivity options. These are also great for high video output and playing games.
If you want to buy a new computer device then you can go for touch screen computer. They can be used for all purpose with more flexibility. The power to work on your computers with finger movement is a great feature for professionals and game players. You do not need a extra mouse to click to select or open any software or file. Moving cursors and using the keyboard on the screen can be tiring and more troublesome for you if you are a common computer user. In the touch screen items, you do not need to know how the mouse and keyboard works. You can operate the computer without using them at all. The features are kind of dream for many users, but they are real now and available at the stores.
Dave has been writing articles for about 6 years now. Not only does the author specialize in technology, gadgets and Apple, you can also check out his latest website on Custom Website Design which works on custom website design and custom logos.
You will need a desktop to finish all your works even if you get a Tablet PC. It proves expensive to buy two computers and manage work in a proper way. While buying a touch screen pc, you can easily manage your work because it provides multi-functional platform to users. These touch screen computers are alternate to both desktop and touch screen notebook. They do not need additional mouse, keyboards, CPU to connect. They can offer you all the functions available in a desktop computer.
Most of the touch screen desktops are expensive, but they provide amazing functions and features to users. They use powerful processors to generate more power to work. There are different brands of accessories available in the market. The first one you need look for is from the HP pavilion. HP offers touch screen computers that include Intel dual core processors with a huge memory of 500 GB. These computers have connectivity features through Wi-Fi. HP touch screen computers are handy for users as they are easier to control than the desktops. They can be priced a little high but these products are really worth of high price.
There are other brands offering same products with different features. One is from Kortek Company. They feature almost the same as HP and their devices come into different sizes. You can choose the perfect size that will suit to you. Visible offers digital products in smart size but, their specifications are almost same.
This feature in one desktop can run Windows operating system, Windows XP. Networking activities can be done using these devices such as Wi-Fi and other connectivity options. These are also great for high video output and playing games.
If you want to buy a new computer device then you can go for touch screen computer. They can be used for all purpose with more flexibility. The power to work on your computers with finger movement is a great feature for professionals and game players. You do not need a extra mouse to click to select or open any software or file. Moving cursors and using the keyboard on the screen can be tiring and more troublesome for you if you are a common computer user. In the touch screen items, you do not need to know how the mouse and keyboard works. You can operate the computer without using them at all. The features are kind of dream for many users, but they are real now and available at the stores.
Dave has been writing articles for about 6 years now. Not only does the author specialize in technology, gadgets and Apple, you can also check out his latest website on Custom Website Design which works on custom website design and custom logos.
Future Developments In Processing And Storage
Computer developers are obsessed with speed and power constantly seeking ways to promote faster processing and more main memory in a smaller area. IBM for instance came up with a new manufacturing process (called silicon-insulator) that has the effect of increasing a chip's speed and reducing its power consumption. These chip's released in 2001 are 30% faster.
DSP chips: Processors for the Post-Pc Era
Millions on people may be familiar with the "Intel Inside" slogan calling attention to the principal brand of the microprocessor used in microcomputers. But they probably are unaware that they are more apt to go through the day using another kind of chip-digital signal processors (DSP's), integrated circuits designed for high speed data manipulation, Made mainly by Texas Instruments but also by Lucent, Motorola, and Analog Communications, and image manipulations. Made mainly by devices, DSPs are designed to manipulate digital signals in speech music and video, and so they are found in pagers, cell phones, cars, hearing aids, and even in washing machines.
Digital signal processing is present only one-fifth the size of the $21 billion microprocessor business. But in most post-PC era, communications and internet driven devices - which need to handles enormous streams of real world information, such as sounds and images are expected to supplant the personal computer. Thus in 10 years its possible that DSP's could outsell Microprocessors.
Nanotechnology
Nanotechnology, nanoelectronics, nanostructures, all start with a measurement known as nanometer. A nanometer is a billionth of a meter, which means we are operating at the level of atoms and molecules. A human hair is approximately 100,000 nano meters in diameter.
In nanotechnology, molecules are used to create tiny machines for holding data and performing tasks. Experts attempt to do nanofabrication by building tiny nanostructures one atom or molecule at a time. When applied to chips and other electronic devices, the field is called nanoelectronics.
Today scientists are trying to simulate the on/off of traditional transistors by creating transistor switches that manipulate a single electron, the sub-atomic particle that is the fundamental unit of electricity. In theory a trillion of these electrons could be put on a chip the size of fingernail. Scientists have already forged layers of individual molecules into tiny computer components into devices called chemically assembled electronic devices, or CAENs. These machines would be billions of times more powerful than today's personal computers.
CAEN components are supposed to be up and running within 10 years. But computer makers are already getting some payoffs from nanotechnology, which is being used to build read/write heads for hard disks drives, improving the speed with which computers can access data.
Optical Computing
Today's computers are electronic, tomorrow's might be optical, or opto-electronic using light, not electricity. With optical technology a machine using lasers, lenses and mirrors would represent the on/off codes of data with pulses of light.
Light is much faster than electricity. Indeed, fiber optic networks, which consist of hair-thin glass fibers instead of copper wire, can move information at speeds 3000 times faster than conventional networks. However the signals get bogged down when they have to be processed by silicon chips. Optical chips would remove the bottleneck. (Someday theoretically, it is conceivable that computers could operate even faster than the speed of light. For generations, physicists thought nothing was faster than light moving in vacuum at about 186,000 miles per second.)
DNA Computing
Potentially, biotechnology could be used to grow cultures of bacteria that when exposed to light emit a small electrical charge, for example. The properties of biochip could be used to represent the on/off digital signals used in computing. Or a strand of synthetic DNA might represent information as a pattern of molecules, and the information might be manipulated by subjecting it to precisely designed chemical reactions that could mark or lengthen the strand. For instance, instead of using binary it could manipulate the four nucleic acids, which holds the promise of processing big numbers. This is entirely non digital way of thinking about computing.
Imagine millions of nanomachines grown from microorganisms processing information at the speed of light and sending it over far-reaching pathways. What kind of changes could we expect with computers like those?
Quantum Computing
Sometimes called the "ultimate computer" the quantum computer is based on quantum mechanics, the theory of physics that explains the erratic world of the atom. Where as an ordinary computer stores information as 0s and 1s represented by electrical currents or voltages that are either high or low, a quantum computer stores information by using states of elementary particles. Scientists envision using the energized and relaxed states of individual atoms to represent data. For example, hydrogen atoms could be made to switch off and on like a conventional computer's transistors by moving from low energy states (off) to high energy states (on).
Other Possibilities: Molecular & Dot Computers
In the molecular computer, the silicon transistor is replaced with a single molecule. In the dot computer, the transistor is replaced by a single electron. These approaches such as mass producing atomic wires and insulators. No visible prototypes yet exist.
DSP chips: Processors for the Post-Pc Era
Millions on people may be familiar with the "Intel Inside" slogan calling attention to the principal brand of the microprocessor used in microcomputers. But they probably are unaware that they are more apt to go through the day using another kind of chip-digital signal processors (DSP's), integrated circuits designed for high speed data manipulation, Made mainly by Texas Instruments but also by Lucent, Motorola, and Analog Communications, and image manipulations. Made mainly by devices, DSPs are designed to manipulate digital signals in speech music and video, and so they are found in pagers, cell phones, cars, hearing aids, and even in washing machines.
Digital signal processing is present only one-fifth the size of the $21 billion microprocessor business. But in most post-PC era, communications and internet driven devices - which need to handles enormous streams of real world information, such as sounds and images are expected to supplant the personal computer. Thus in 10 years its possible that DSP's could outsell Microprocessors.
Nanotechnology
Nanotechnology, nanoelectronics, nanostructures, all start with a measurement known as nanometer. A nanometer is a billionth of a meter, which means we are operating at the level of atoms and molecules. A human hair is approximately 100,000 nano meters in diameter.
In nanotechnology, molecules are used to create tiny machines for holding data and performing tasks. Experts attempt to do nanofabrication by building tiny nanostructures one atom or molecule at a time. When applied to chips and other electronic devices, the field is called nanoelectronics.
Today scientists are trying to simulate the on/off of traditional transistors by creating transistor switches that manipulate a single electron, the sub-atomic particle that is the fundamental unit of electricity. In theory a trillion of these electrons could be put on a chip the size of fingernail. Scientists have already forged layers of individual molecules into tiny computer components into devices called chemically assembled electronic devices, or CAENs. These machines would be billions of times more powerful than today's personal computers.
CAEN components are supposed to be up and running within 10 years. But computer makers are already getting some payoffs from nanotechnology, which is being used to build read/write heads for hard disks drives, improving the speed with which computers can access data.
Optical Computing
Today's computers are electronic, tomorrow's might be optical, or opto-electronic using light, not electricity. With optical technology a machine using lasers, lenses and mirrors would represent the on/off codes of data with pulses of light.
Light is much faster than electricity. Indeed, fiber optic networks, which consist of hair-thin glass fibers instead of copper wire, can move information at speeds 3000 times faster than conventional networks. However the signals get bogged down when they have to be processed by silicon chips. Optical chips would remove the bottleneck. (Someday theoretically, it is conceivable that computers could operate even faster than the speed of light. For generations, physicists thought nothing was faster than light moving in vacuum at about 186,000 miles per second.)
DNA Computing
Potentially, biotechnology could be used to grow cultures of bacteria that when exposed to light emit a small electrical charge, for example. The properties of biochip could be used to represent the on/off digital signals used in computing. Or a strand of synthetic DNA might represent information as a pattern of molecules, and the information might be manipulated by subjecting it to precisely designed chemical reactions that could mark or lengthen the strand. For instance, instead of using binary it could manipulate the four nucleic acids, which holds the promise of processing big numbers. This is entirely non digital way of thinking about computing.
Imagine millions of nanomachines grown from microorganisms processing information at the speed of light and sending it over far-reaching pathways. What kind of changes could we expect with computers like those?
Quantum Computing
Sometimes called the "ultimate computer" the quantum computer is based on quantum mechanics, the theory of physics that explains the erratic world of the atom. Where as an ordinary computer stores information as 0s and 1s represented by electrical currents or voltages that are either high or low, a quantum computer stores information by using states of elementary particles. Scientists envision using the energized and relaxed states of individual atoms to represent data. For example, hydrogen atoms could be made to switch off and on like a conventional computer's transistors by moving from low energy states (off) to high energy states (on).
Other Possibilities: Molecular & Dot Computers
In the molecular computer, the silicon transistor is replaced with a single molecule. In the dot computer, the transistor is replaced by a single electron. These approaches such as mass producing atomic wires and insulators. No visible prototypes yet exist.
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