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Posts Tagged ‘computer’

I recently found myself in need of a new laptop. With a tight budget and moderate needs, I knew it wasn’t going to be easy to find a product that would do what I wanted and still be in my price range.

As a Network Technician and a Web Designer, I needed a machine that would have enough storage to store all my software, projects for my clients, and still be able to handle an occasional temporary operating system backup from a client’s machine. The qualifying candidate also had to have a decent amount of RAM and a reasonably fast processor to keep up with the demands of multitasking and using Studio MX ’04 on a daily basis.

At first, I checked the auction sites, the refurbished outlets, and the wholesale warehouses. I found a few good deals for under $500, but nothing that would handle the processing load that Studio MX 2004 would place on it. The average machine had 256MB of PC133 RAM, a 20GB HDD, and a 1.0GHz Pentium processor. Not too shabby for a student machine, but for daily service in the fields I work in, not nearly enough space or power to keep up with my demands.

I quickly realized that a new laptop would be needed in order to meet my needs. Realizing that most decent laptops are priced at over $1,000, I wasn’t expecting a whole lot when I started shopping around. However, to my surprise, a local retail chain had a special running on the Acer Aspire 3004WLCi for $600 after a $150 rebate. This was the top end of my budget, but the specs were far more than what I thought I would find in this price range.

Quick Specs:
AMD Mobile Sempron 3100+ (1.8GHz) w/ 256K L2 cache
512MB DDR333 SODIM RAM (expandable to 2GB)
60GB 4200rpm Hard Disk Drive
15.4 Wide Screen WXGA Monitor
CD-RW/DVD-ROM Combo Drive
3 USB 2.0 Ports (1 front / 2 side)
Front Audio / Microphone jacks
Integrated Microphone / Speakers
Integrated Audio Controller
Integrated Video Controller (up to 128MB shared)
Integrated 56Kbps Data/Fax Modem
Integrated 802.3 10/100 Ethernet NIC
Integrated 802.11b/g WiFi
Maximum screen resolution: 1280 x 800
External monitor maximum resolution: 2048 x 1536
One type II PCMCIA Slot
AC Power Adapter / 4-cell lithium-ion battery
1.5″Hx14.3″Wx11″D / 6.2lb. w/ Battery
Microsoft Windows XP Home SP2

OK, before I go into the Pros and Cons of this system, let me first say this… As a Network technician, I’m a bit of a stranger to Acer products. I’ve seen them before, but I’ve never used them. In an industry dominated by Dells and HPs, Acer seemed more of an “off-brand” to me. With that in mind, I wasn’t expecting a whole lot for my money. Fortunately, I was not disappointed, but neither was I entirely wrong.

Also, it is worthy to note that before I used this machine, XP Home was trashed in favor of XP Professional SP2 and I went through the system and performed several minor software performance tweaks on the operating system; all of which can be performed using the native Windows XP Pro utilities.
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Buying software online can be tricky, especially if you are new to shopping via the internet. Whether you are upgrading an existing software package or looking for a specific program to install, the process will be a lot less complicated if you know what to look for.

Software Buying Tip # 1
Read customer reviews. Many popular online stores, such as Amazon, allow users to leave their comments about a particular product. Reading other customer reviews may help to make your decision easier because it gives you an idea of others who have experienced the product firsthand.

Software Buying Tip # 2
When considering any type of software, make sure that it is compatible with your computer. Most software requires a specific processor type, such as Pentium or Celeron, and a certain amount of free hard drive space. The reason is because, in order for software to function properly at quickly, the computer must be able to handle the application. By being familiar with your computer’s configuration, you will be able to select the right software.

Software Buying Tip # 3
Become familiar with the software by reading it’s description and capabilities. Before purchasing any type of software, you should make sure that it is exactly what you want or will enjoy learning. Often times, after software is opened, there is no refund policy for buyer’s remorse.

Software Buying Tip # 4
Purchase software from a reputable company. This will ensure customer service, reliability, quality products and timely shipment. By purchasing software from a reliable source, you will also ensure that the title is authentic and not an illegal copy. The best way to check out a business’s reputation is through the Better Business Bureau.

Software Buying Tip # 5
The best part of shopping for software online is the competition. Because there are so many retailers, prices are more competitive than if only one store had the software that you want. Shop around and compare prices before making a final decision.
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Today it is almost inconceivable for a business not to have computers, whether it is a construction company or a high technology firm. When a business has more than one computer, they are almost always connected together in a local area network. These networks may be more or less advanced and therefore more or less costly.

Companies invest so much (in terms of both money and time) in a local area networks because there are many advantages that a local area network brings to a business and how it is administered.

Some businesses use a local area network in such a way they are highly dependent on it always working. If the company’s network fails, then you may see all the employees chatting away in the corridors because they can’t do their work. This means big losses for the company and causes stresses on the employees. All companies must consider their local area networks a vital asset and downtime must be avoided. This imposes huge demands on the network staff to keep such networks running almost 100% of the time.

The advantages of Computer Network Management

One of the main advantages of installing and maintaining LANs is the opportunity they create for better communication and cooperation between employees and customers.

Security considerations: Local Area Network security can be both a help and hindrance. Comprehensive security is beneficial because it provides a central and safe strategy for data access and disaster recovery. All information is protected by the design and implementation of the network security solution. On the other hand, interconnecting computers in local area networks creates a security risk, since doing so makes it technically possible for intruders to access many machines on the network at once.

Cost considerations: Installing a local area network is a relatively expensive project. Servers, cabling, switches, routers and software can all be expensive and should never be purchased without expert advice. Keeping the network operating and secure also requires a lot of resources and can be costly.

Surprisingly, a local area network can bring a number of cost savings. Sharing resources avoids the need to purchase equipment for each individual. Even more important is the security that a local area network can provide. Data loss could cost a business a great deal of money and in some cases, cause the business to shutdown altogether. Computer Network Management should require a consistent routine for data backups with regular checkups of data quality – a practice that will save a company huge sums in the event of a mishap.

Computer Network Management: preliminary analysis phases

The first phase of computer network management is to determine the source of the problem (a preliminary study that looks into several options of differing scope may be useful here) and defining it in a specification of requirements. Examples of what should be evaluated are different network operating systems, mail systems, and other applications. The choice of hardware components should also be evaluated. This phase is generally aimed at establishing what the system should do, not how it should do it.
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Cabling your home for computer network – still a requirement?

With proliferation of wireless networking and communication equipment it is oh-so-tempting to cut the cord and save a significant sum of money in the process. But is everything that a regular computer networking user needs can be done using just wireless network? Let’s take a look at some pros and contras:

1. One important advantage of having a cabled network is the available bandwidth or simply speed. At the present point in time the speed of connection via a simple and inexpensive CAT5E cable can be 1000Mbit/sec, whereas the best that IEEE802.11g (one of the many flavors of Wi-Fi) can offer is only 54Mbit/sec. It may not seem so significant if you think you are only browsing Internet, and the DSL speed available to you is 1.5Mbit/sec. However, if you need to print via your network connection on a remote printer, you should realize that the print jobs, depending on the amount of graphic data in them, can easily reach dozens and even hundreds megabytes. Since 1Byte=8bit one 100MByte print job will take 15 seconds (and in reality this time can be much longer) to transmit via a Wi-Fi wireless connection, and this time shrinks to mere 1 sec or less on wired 1000MBit/s Ethernet connection. Same principal applies to transferring files, backing up files on other computers in the network etc.
2. It is not possible today and with all probability will not be possible in the future to transmit power needed for your networking device via the wireless link. Unless, of course, you would be willing to be subjected to very high levels of microwave radiation. Thus a device that was marketed to you as “un-tethered” will in fact be very much tethered via the power cord or will have to be re-charged every so often. The power requirements are increasingly important for devices that are expected to be always online, such as phone sets. Therefore it is best to have it connected via a cable that can deliver both power and the communication signal at the same time.
3. Wireless communications are very much proprietary and require whole gamut of conversion equipment to transmit multi-media signals. The same CAT5E cable can without any modification support phone, computer network, balanced line level audio signal, baseband video signal as well as host of other, more specialized, control applications’ signals. With inexpensive adapters called “baluns” the same cable can carry significant number of channels of broadband television or carry a baseband video, such as security camera output, through great distances. All of those applications, except the computer network of course, will require specialized expensive conversion equipment if they needed to be transmitted via a Wi-Fi link.
4. The cost benefit of not running wires around the house is not as simple as issue as it seems. Having installed a wireless network at home you have only eliminated the need to wire for a single application – computer network. A modern home, however, requires all kinds of wiring to run even without regard to computers. The power and phones are obvious examples, as well as thermostats and security systems. Pre-wired speakers are common and most homes today have intercom systems as a desirable option, and those also require extensive wiring. It is very likely that the same contractor running the intercom or security cables is qualified to run computer cables – CAT5E or better. If you are building a home, you should definitely check if computer cabling option is available in your new home, and our advice is to go ahead and purchase it before the walls close. It is going to be a pretty involved and expensive procedure to install the cables later. As an added cost benefit of a wired computer network you will find that all modern computers ship with wired Ethernet network interface card included, and the latest models ship with 1000MBit/sec cards that are essentially free for the computer’s owner.
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