Posts Tagged ‘Computer’
Information on Computer Support Job Roles and Qualifications
September 27, 2011 | 
Author Since the world is becoming more dependent on technologically advanced devices, there is a greater need for computer support personnel. More companies are creating computer support departments and IT positions and more IT companies are started every day, increasing job opportunities for technology related careers. If you are looking for a job in the computer support and IT industry, it’s possible to start your own business or apply for open job positions in companies from all different backgrounds. However, to be considered for these specialty positions it is important to be knowledgable in the field.
Computer support is not just about helping people with their computer problems. Many firms need to hire someone who can be put in charge of data and network security. IT support will also be needed to make sure that everything is running well within the company and that new email addresses can be set up for new employees. Even if you start your own company, you will need to make sure these services can be offered.
Someone who wants a role in IT support will need knowledge about computers. The best option is to have a degree in Information Systems or Computer Science. However, not all jobs do require degrees. Many people can now take Microsoft courses to gain the skills, qualifications, certifications and knowledge needed to become successful in the IT business. Experience will also be needed to get a job with a good firm.
There are different types of support personnel, depending on job title and what needs a particular company may have. One of the most common titles is a specialist – specialists are the people who offer advice and tips on fixing computers. Other names for this position include help desk personnel and technicians. They are the people that answer the phone when you are having computer problems and they are able to troubleshoot problems over the phone and tell you what to do to make sure that everything is in full working order.
System administrators are the next level up. These people will work within a company and monitor how well a system is working. It is up to a system administrator that everything is working exactly how it should be.
The systems are all designed by a Computer Networking Systems Administrator. These are also the people that work with the intranet and internet settings within a company. This is a large responsibility so a degree is needed for this, as well as a lot of experience in the job role.
Security specialists also come under IT support and these are the people that will monitor how well the security of the computers is. This will involve keeping an eye out for anybody hacking into the system as well as people getting into areas that they are not supposed to. This is much harder when it also involves the internet. The security personnel also need to install the security software onto the computer networks.
So computer support jobs are widely available but you do need proper training and qualifications to gain a position in this field. Take the time to research available Microsoft courses you can take to gain needed knowledge and certifications, but make sure that you sign up for legitimate courses that offer the certifications you need based on the job you are looking for. Double check with the course provider and the Microsoft website to find out more. The last thing that you want to do is waste money on courses that are not recognized or accredited.
Global Computer Hardware Industry ? Growth of Different Segments
The impact of global recession on the computer hardware companies is left behind and they are back on the progress track. It seems that the forecasts that were made before recession are going to turn true. Different segments of the computer hardware industry are growing with improvement in their design and functionality and rise in their demand.
Not only the big computer hardware manufacturers, but the small and medium sized enterprises too are making big contributions towards the industry growth at a global level. Below you can find few sections that analyze the growth of computer hardware industry segments in different countries.
Before that, here is a list of the main segments of the computer hardware industry:
Finished goods like computers and laptops.
Networking hardware consisting of routers, modems, network cards, network adapters, hubs and switches and other components.
Storage hardware ranging from the hard disks to the USB storage devices.
Input and output peripherals like keyboard, mouse, scanners, video cards, speakers, headphones, game controllers and so on.
System hardware consisting of motherboards, UPS, monitors and other components.
Personal Computer Market
In 2008, the global PC market generated the revenue of $203.7 billion that represented the compound annual growth rate of 8 percent from 2004 to 2008. The PC market in China had total worth of $21.8 billion in 2008 representing the total compound annual growth rate of over 14 percent. The United States PC market generated $50.6 billion in 2008 showing 3.8 percent compound annual growth rate.
An impressive growth of 42 percent was shown by the PC sales between October and December 2009 in the Indian market. The 52 percent of the desktops sold were contributed by the multinational computer hardware companies and 13 percent by the Indian computer hardware manufacturers. The remaining 35 percent consisted of assembled desktops.
Growth of Other Segments
From October to December 2009, the Indian computer hardware market witnessed the 70 percent growth of laser printers. The dot matrix printers grew by 13 percent while the inkjet printers grew by 17 percent over the same period in India. The UPS market too recorded the growth rate of 28 percent during the period.
In Chin, the total revenue generated from the networking hardware was $4.8 billion in 2008. For the same year, the network hardware growth in the United States was $23 billion. The total revenue for the global network hardware market in 2008 was $112.8 billion. Also, the global storage hardware and peripheral market recorded the revenue of $160.3 billion in 2008.
The Future Trends
Going by the latest growth rate, the global computer hardware market is expected to attain the worth of $537.3 billion by 2012. The computer hardware manufacturers have started following the concept of green computer hardware manufacturing and this is further going to add to the profits of the computer hardware companies.
The small and medium sized computer hardware manufacturers from the developing countries like India have a great future in the computer hardware components. They along with the major players are going to take the computer hardware industry to a new level in the nearby future.
Where To Shop For Computer Hardware
If you are in need of computer hardware today what you may not realize is that now you have several options when it comes to where you can shop for it. This is a big change from years past when options for shopping for computer hardware tended to be far more limited.
Your first stop might be to check with your local computer hardware store. Thats right! They are still in business and you may find what you need there. The one big benefit of checking with a local source such as this, is that they will have staff available that can answer any questions that you may have while you are looking for what you need.
The Best Prices are Always Online
Of course of all things to buy online, computer hardware would definitely be available. You can start by checking with any one of the online venues that carry computer hardware and you can rest assured that there are more than a few. The benefit of shopping online is that you will always be able to find the best prices and selection too.
Check Out the Online Auctions
Another place to look for computer hardware online is at any of the online auctions. Remember that there is more than Ebay now, so take the time to check with more than one. One thing that you will also want to remember to do when shopping at an online auction, is to take the time to read the feedback on any seller that you are considering buying from.
New Used Or Refurbished Computer Hardware
Bear in mind when you are in the market for computer hardware that you have the option of buying new, used or refurbished computer hardware. However; bear in mind that while used parts my have the lowest price tags, there is always the risk that they may be defective or prone to breaking down earlier than you may have hoped for.
Restored Computer Hardware
Hardware is an aspect of your computer that doesn’t require the need to be changed that often, unlike software. So if your hardware shouldn’t need to be changed that often you want to make sure that when you purchase it you are buying a piece of hardware that will last.
A lot of people overlook the need and responsibility of PC hardware and instead concentrate primarily on software. Without the correct hardware your PC will fail to function correctly.
The term hardware can be fixed to many aspects of your computer, with the main aspect being your motherboard. The motherboard is classed as the heart of your computer; its main purpose is to provide electrical and logical connections. Without a motherboard your computer will not be able to function. Components such as external storage, controllers for video display and sound are attached to the motherboard via edge connectors and cables.
The central processing unit (CPU) is also found on the motherboard and acts as another important piece of computer hardware. The CPU performs most of the calculations which enables a computer to function. The CPU and the motherboard are found within the tower of your computer as is the computer fan, needed to keep your computer at a safe temperature and your power supply, which is obviously needed to ensure your computer has power to function. Along with all of these you will also find your computers sound card and graphics card within your computer tower. Your graphics card, also known as a video display controller, is important to your computer as it is what enables you to get a good resolution and without one you would not be able to watch videos, play games or even clearly see flash images on websites.
One last hardware feature of importance that is kept within your computer tower is the computers hard drive. The hard drive is the storage area of your computer system. All your programmes and applications as well as images, music, video and all forms of media that is on your computer are stored within your computers hard drive.
All of the previously mentioned hardware is stored in the tower of your computer but there are aspects of computer hardware that are visible on your computer such as removable media in the form of a CD drive, DVD drive, floppy disc and USB ports.
When it comes to buying these pieces of computer hardware most people head straight to the biggest brand store and pay over expensive prices for hardware that you could have got a lot cheaper from another avenue. If you are looking to buy computer hardware there are a number of options open to you rather than just buying new. For example there are computer fairs that are held, which sell all forms of computer hardware at very reasonable prices; if you know what you are looking for you will be able to find a great deal at a computer fair. However if you would prefer buying from a retailer have you considered buying used hardware? Please don’t be put off by the term used what is meant by this is you would be buying new hardware that has been returned by customers and restored by the retailer. Dell is a prime example of a store that frequently sells hardware that has been returned and has been repaired to new standards.
All of the equipment is new and only has minor issues such as a slight dent. Retailers such as Dell sell restored equipment within their store and also do so over the Internet on sites such as eBay. All of this equipment comes at a discounted price with around 10-40% being taken off the original price depending on the level of interest. So next time you require to purchase computer equipment, shop around instead of just settling for a high price.
computer hardwares
Computer system consists of many software and hardware. Software is a package of cods or program with which you can access any computer hardware, computer software like Windows XP, any antivirus program, window media player etc. Hardware is a stuff which you can actually see and touch, and would likely break if you threw it out from a window.
Every computer system has not exactly the same hardware. Most of the personal computer system use same hardware but laptops and notebook computers have different hardware. Laptops hardware is small in size and more expensive compare to desktop computers.
The hardware used in today’s computer is CD or DVD drive, monitor, system unit (consist of cup and other devices), mouse, keyboard, speaker and hard disk, these devices are also called peripheral devices.
The pen drive, floppy drive and CD or DVD drive are often referred to as removable media or removable device for short, because you can remove whatever disk is currently in the drive, and replace it with another. You’re all information or data stored in your computer’s hard disk; your pc hard disk can store as much information as tens of thousands of CD and DVD disks. Today’s much capacity hard drives are available so don’t worry about running out of space on your hard disk any time.
Most common hardware used in your computer:
Random Access Memory (RAM)
Your computer’s hard disk keep stored your all data but mostly you all use only a small amount of all that’s available data during sitting at the computer. The stuff you’re working with at any given moment is stored in random access memory. It often abbreviated RAM and also called simply memory. The major advantage of RAM is your data are store whenever you’re working on at the particular moment. Ram is much faster than any disk. These days RAM are available in different-different capacity, you can use it according to your need. RAM provides you fast processing to less time waiting and more time being productive
Hard-disk
RAM is much faster than hard-disk but your all information and data are stored in your computer because RAM is volatile in nature it means whenever your system shutdown you’re all data will be destroyed from RAM. Hard disk can hold information or data forever with or without electricity. Most modern hard disks have tens of billions of bytes of storage space on them. This means that you can create, save, and download files for months or years without using up all the storage space it provides.
Mouse
Your mouse has at least two buttons on it. The button on the left side is called the primary mouse button and the button on the left side is called the secondary mouse button or just the right mouse button. I’ll just refer to them as the left and right mouse buttons. Many mice have a small wheel between the two mouse buttons it is basically used for scrolling the pages on your computer window.
The mouse is designed according to rest your hand comfortably on it, with your finger touching the left mouse button. Then as you move the mouse, the mouse pointer moves in the same direction. When moving the mouse, try to keep the buttons aimed toward the monitor don’t twist the mouse as that just makes it all the harder to control the position of the mouse pointer.
The buzzwords that describe how you can use the mouse easily:
Point: To point to an item means to move the mouse pointer so that it’s touching the item.
Click: Point to the item, then press and release the left mouse button.
Double-click: Point to the item, and press the left mouse button twice in rapid succession – click-click as fast as you can.
Right-click: Point to the item, then press the mouse button on the right.
Drag: Point to an item, then hold down the left mouse button as you move the mouse. To drop the item, release the left mouse
button.
Right-drag: Point to an item, then hold down the right mouse button as you move the mouse. To drop the item, release the
right mouse button
Keyboard
It is work like a mouse. It provides interface between user and computer. You need a keyboard when you want to typing text. The keys on the keyboard are laid out like the keys on a typewriter but modern keyboard has some special keys like “Esc” (Escape), “Ctrl” (Control), and “Alt” (Alternate).another keys are F1, F2, F3 and so forth, these are across the top of the keyboard and called function keys. Numeric keypad also available on the keyboard, it is basically used for mathematical calculation. Navigation keys also available on the modern keyboards you can use the navigation keys to move around through text on the screen.
The notebook and laptops keyboard are different in size and some features. There navigation keys and numeric keypad might be one in the same and a Num Lock key on the keypad. When the Num-Lock key is on the numeric keypad keys type numbers and when the Num-Lock key is off the navigation keys come into play. The Num Lock key acts as a toggle.
Basic Computer Hardware
Computer Hardware
Obviously, before you can put together a computer, you’re going to need to purchase some hardware. And before you can purchase hardware, you need to know what you’re looking for! In this section, I will explain the primary components of a computer and their basic functions.
1. Computer Case
The computer case is the outer protective case that houses all of the computers components. The case is as far into the computer that most people ever look. The computer case is often mistakenly referred to as the CPU, which really stands for Central Processing Unit, or the processor.
Computer cases are most commonly constructed from steel, aluminium, and/or plastic. Occasionally, they have Plexiglas or acrylic windows, allowing a clear view of the internal components from the outside.
Computer cases come in many different shapes and sizes. The shape is generally determined by the form-factor of the motherboard, since it is the largest component of most home or office PC’s. These days, most home computer cases are Tower cases, and house an ATX form-factor motherboard. For the tutorials on this site, tower cases and atx motherboards will be assumed.
2. The Motherboard
The motherboard (or main board) is the backbone of any home, office, or gaming computer. It is the large circuit board in the center of the computer case that every other component connect to. It contains the system BIOS (Basic Input Output System) and controller chips for the processor, memory, optical drives, hard drives, and expansion cards, among other things.
Selecting the correct motherboard is one of the most important decisions when putting your custom computer together. The motherboard determines what type of processor and memory your computer will use, and what sort of storage, media, and expansion options you will have. Selecting the wrong motherboard could be disastrous! For example: if you need to build a computer that has four internal hard drives, and your motherboard only has connectors for two, you will be out of luck!
3. Processor
The processor, or CPU (Central Processing Unit) is the brain of the computer. It carries out the instructions of a computer program, and is the primary element carrying out the computer’s functions. The fundamental operation of most CPUs, regardless of the physical form they take, is to execute a sequence of stored instructions called a program.
The speed at which processors can execute instructions is called the Clock Rate, or clock speed. When selecting a processor for your new computer, clock speed is very important, as it will have a large impact on how fast your new computer is.
These days, most processors on the market are multi-core. Having a multi-core processor is like having two (or more) workers carrying out your instructions. While one worker carries out Task A, the other can work on Task B. If there is only one task, both workers can split the work evenly and help each other out! There is significantly more to multi-core processors, but for the beginner, it should be obvious that multi-core processors are a solid decision!
4. Memory
Random Access Memory (RAM) provides space for your computer to read and write data to be accessed by the CPU. When people refer to a computer’s memory, they are usually referring to the RAM.
If you add more RAM to your computer, you reduce the number of times your CPU must read data from your hard disk. This usually allows your computer to work considerably faster, as RAM is many times faster than a hard disk. For many people (and maybe for you!), adding more RAM is the first computer upgrade they attempt themselves.
RAM is volatile, so data stored in RAM stays there only as long as your computer is running and electricity is flowing through the memory. As soon as you turn the computer off, the data stored in RAM disappears.
There are many different kinds of RAM you can buy, so it is important to ensure you select the proper type of RAM for your motherboard.
5. Hard Drive
The Hard drive, or Hard Disk Drive (HDD), is storage where all of the computers files and programs are kept. Everything stored on the hard drive is permanent, and unlike RAM, will not be lost when you power the computer off.
A hard disk stores data the same way a cassette tape does, through a magnetic storage technique. This makes data stored on a hard disk very easy to erase, revise and replace. Moreover, the magnetic recording patterns are stored on a hard disk for a long time. As such, the only way to definitely erase data that has ever been stored on the disk’s magnetic surface is to physically destroy the disk.
Since the Hard Drive holds all of your data, the most important factor to consider when selecting one for you computer is size. Today, hard drive size is measured in Gigabytes. One gigabyte is roughly 1,000 megabytes, and one megabyte is roughly 1,000 kilobytes. The size of the hard drive you select will be dependant on your individual storage needs.
6. Optical Drive
The optical drive is a disk drive that uses laser light or electromagnetic waves near the light spectrum as part of the process of reading or writing data to or from optical discs. Some drives can only read from discs, but recent drives are commonly both readers and recorders. Recorders are sometimes called burners or writers. Compact discs, DVDs and Blu-ray discs are common types of optical media which can be read and recorded by such drives.
Selecting an optical drive is important, because most media today is distributed via CD or DVD, and this is how much of your data and programs will be installed to your computer. Ensuring you chose a recording optical drive, or burner, is importent if you want to write files to CDs, DVDs, or even Blu-ray discs. Selecting a Blu-ray drive is imporant if you want to watch Blu-ray movies on your computer.
7. Video Card
Video Cards, also known as display cards, graphics cards, graphics controllers, or graphics accelerator cards, convert binary data (bytes) into display images. The Video Card, at its most basic, is a printed circuit board where the major components, namely the graphics processing unit, the video memory, and the motherboard slot are mounted.
Not all computers requre a seperate video card, as many today have the video processing hardware integrated into the motherboard. However, gaming computers, home theater computers, or office computers used for 3D design will require the more powerful hardware offered in a standalone video card.
For custom gaming computers, selecting the proper video card is likely the most important decision you will make.
8. Expansion Cards
There are an assortment of other expansion cards you can add to your custom computer in order to add functionality and features.
9. Power Supply
The power supply unit (PSU) is the component that supplies power to the other components in a computer. Power supplies convert potentially lethal 110-115 or 220-230 volt alternating current (AC) into a steady low-voltage direct current (DC) usable by the computer. A power supply is rated by the number of watts it generates.
The most common computer power supplies are built to conform to the ATX form factor. This enables different power supplies to be interchangeable with different components inside the computer. ATX power supplies also are designed to turn on and off using a signal from the motherboard, and provide support for modern functions such as the standby mode available in many computers.
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Few Tips For Buying Better Computer Hardware
Computers are essential to keep pace with the high speed world. If you don’t have a personal computer, you are surely going to lose some amazing opportunities to move ahead in life. But, if you’re interested in buying computer for yourself, it is important to pay attention to few important things.
Although there are many things to take into consideration at the time of buying a PC, you need to make sure you have checked it for hardware configuration. You should also make sure your computer can easily be upgraded after purchase. This is the point where you will have to install new hardware to replace the older one. But, if you don’t know how to find right type of computer hardware, you should keep following things in mind.
* It doesn’t matter if you want a Hard Disk, Floppy Drive, Power Supply or any other type of computer hardware, you should consider shopping over the internet. The reason is that it will help you make a choice form the wider range of options and you will be able to upgrade your computer in the right way.
* Another important thing to keep in mind is that you should always shop from an authentic site. This is one big issue associated with the option of buying hardware over the internet. There are many sites selling substandard parts and these are the sites that should be avoided at all cost.
* While shopping for computer hardware, you should always try to shop around. It means you should try to find few popular sites to make a comparison for price and variety. First check for the available variety of hardware. This is important to get everything from one single site. Then, compare these sites for price and available discounts to proceed with your shopping.
* In case you don’t have enough money to upgrade your PC, you should consider the option of buying used hardware. This is the option that helps you get a faster PC without spending a fortune on hardware. But, as mentioned earlier, always shop from an authentic site for used hardware to get the better bang for the buck.
* At the time of buying computer hardware, it is essential to pay attention to compatibility. Yes, it seems like all hard drives will work for your PC, but that’s not the case. You should read the manual before searching for computer hardware over the internet.
These are few of the most important things that you should take into consideration at the time of shopping for computer hardware. Always bear this in mind that your PC will work in the right way if you add right sort of hardware. That’s the point where compatibility comes into play. So, pay attention to all these things and get right compute hardware.
How to Locate Wholesale Computer Hardware
If you are not actively looking for wholesale computer hardware as part of your notebook shopping process, you are making an almost fatal mistake that will cost you money that you could easily save for future use.
A visitor once asked me via email how she could track down laptop computer sales and if there was a time saving way to go on about this.
After a few thoughts, I simply put myself in her shoes and what you are going to read below is what I would do if I wanted information on wholesale computer hardware.
First of all, you need to know that at any given time, there is some sort of wholesales on laptops going on. The reason behind them is to get shoppers to buy now instead of later (which usually is never).
With that most sales you’ll hear about are nothing but marketing ploys that retailers use to get your money before their competitor does with promises of lower prices.
My favorite time to hunt down wholesale computer hardware is during special times of the year. For instance: back to school, holidays such as Christmas and the ultimate of all, when new laptop models are made available on the market.
An example I can share with you is the introduction of G5 desktops from Apple. All the retailers started holding sales to get rid of the now “older” G4 models to make room for the G5.
One thing you need to make sure of is that nothing should be wrong with the notebooks that you buy during these sales. Remember to ask about the warranty and other terms and conditions.If something is wrong with the unit that you get from wholesale computer hardware but does not affect the performance of the notebooks, make sure that the company you deal with knows about it. Better yet, have them right it down on your receipt.