Computer Hardware Information
Printer Cartridges - Step Back in History
You are working and trying to print out important documents when you discover that you are out of ink. This would have been a big drawback in the past. Most printers years ago used daisy wheels or ribbons to print documents. The evolution of printer cartridges should be looked at.
How to Choose a New Hard Drive for Your Computer
If you are running out of space on your computer or find that programs load a little slow, or that big files take a long time to open, it may be time for a new hard drive.
How To Upgrade Your PC
Before you upgrade your PC hardware it?s best to search all options and ask for advice. Only after this you can go and buy a new component. It?s also useful to check if you really need an upgrade.
Adding Serial Ports to a Computer with Only USB Ports
So you bought a new computer but you don't have serial ports?
ESR Meter - The Capabilities To Check Beyond Electrolytic Capacitor
There is something good about esr meter because besides electrolytic capacitor it can be use to measure other type of capacitors such as the non polarity capacitor. From esr meter specification, it is usually mentioned only checking the electrolytic type. When i began to experiment with the Dick Smith ESR Meter i found that it have the capabilities to check other type of capacitors as well.
To Upgrade or Not?
To upgrade or not? That is the question. At least, since the release of the new Athlon 64 FX-57, that is the question I have been pondering. Even though the FX-55, (which I am currently running), was everything I had hoped it would be, is the new FX-57 that much better? Well let's take a look.
A Review of Brother Laser Toners
Brother is right up there with HP and Samsung as one of the most sought-after brands of laser toner. The Japan-based Brother Industries was first famous for its sewing machines. It went on to produce all kinds of office equipment, such as machine tools, fax machines, label makers, printers, and other office equipment. They began making dot-matrix printers in the 1970s. In the 1980s, after HP blew up the market, Brother began releasing their own laser printers to consumers, and to other companies under the name of OEMed. Brother has a great reputation for printers and printing accessories.
A Review of Samsung Laser Toners
Samsung laser toner is just as popular as its Hewlett-Packard and Brother counterparts. Samsung is a group of products and services that began in Korea in 1938. Today Samsung operate five different business areas: Telecommunications, Digital and Home Appliances, Digital Media, LCD, and Semiconductors. They started their Electronics section in 1969. Today they are one of the top 100 brands in the world, and their printers and cartridges continue to gain a loyal following.
Rackmount Computer Keyboards
The other piece of vital equipment to accompany the rack mount computers and the monitors are the rack mount computer keyboards. Rackmount computer keyboards are built with durability and reliability in mind.
A Guide to Refurbished Laptops
Computing freedom, independence, and mobility don?t have to come with a hefty price tag.
Buying Cheap Refurbished Laptops
When comparing refurbished laptop models, ask about these specifications:
Buying a Refurbished Dell Laptop
Dell offers a full line of refurbished laptops on their website, dell.com. Look for ?Outlet Refurbished Laptops.? There you will find a full range of popular models that run just as reliably as a new machine ? for hundreds of dollars less than you would pay for new versions. This is because Dell refurbished laptops are inspected for ?good-as-new? quality. The only differences are the red label on the bottom of the unit and a lower price.
A Guide to Refurbished IBM Laptops
IBM boasts a very large array of older and newer refurbished laptops on their website ibm.com. Look for ?Notebooks: IBM Certified Used Equipment.? There you can buy any of dozens of models and variations, for hundreds of dollars less than new models. IBM inspects all of their returned laptops (including the batteries, as with most factory-refurbished laptops), makes sure they up and running at top speed, and repackages them for resale.
A Review of Refurbished Toshiba Laptops
Toshiba offers a few of their refurbished laptops in the ?Clearance Store? of their official website toshibadirect.com. There you can purchase their laptops at 20-30% discounts, refurbished and as good as new. Toshiba inspects all returned and overstocked notebooks, replaces any defective parts, and resells them. You the consumer reap the benefits.
The Printer Cartridge Wars: Generic or Remanufactured Cartridges Right for You?
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Getting A Great Refurbished Laptop
Are you sick of all the high priced notebooks out there? Does getting a used laptop seem like a better choice to you? Refurbished laptops are everywhere these days, and the word itself seems like a "buzz word" of the industry. But do these used machines actually hold up to the strict standard of the word "refurbished"?
The Printer Cartridge Review
Years ago computers were huge and their accompanying printers were huge as well. Instead of ink cartridges like those used now, they had toner reservoirs and later toner cartridges. Filling a toner cartridge was not easy and it was messy. The toner cartridges were better. Some printers ran on print wheels and some used ribbons.
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Ten Things Everyone Should Know about Ordering an Inkjet Cartridge Online
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5 Tips For Buying The Right Laptop Computer
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Setting up a Tape Backup Strategy for your Business
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USB Hubs and Ports Explained
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How to Change, Upgade or Remove an IDE Hard Drive
Hard drives - Hard drives are a little more complicated. First off, you have to know what you want to do with the hard drive. By this, I mean either you want it set to either SLAVE or MASTER. If you want to boot from the hard drive (load windows or whatever other OS off it) then you want it to be your master. If you already have a master, and you want to use this as extra space, set this hdd to slave. This setting change requires a jumper on the back of the hard drive to be moved. It may sound hard, but it's easy. These jumper configurations can be found on the back of the hdd; most have a small label which states which way is which. After setting the jumper, take the IDE cable that runs to your primary hard drive. This is the long, usually grey cable that runs from a slot on your motherboard to your primary hard drive. If you are putting your new hdd in as a slave, this cable should have a second connector on it not being used. Connect this to the new slave hard drive, but don't disconnect the cable from your other HDD.
Your Printer Is Out Of Ink -- Now What?
We've all been there. You're in the middle of printing out an important document and your printer suddenly stops. It's the dreaded "out of ink" message. So you pull your backup ink cartridges out of your desk drawer and replace them. Wishful thinking, right?
Moving to a New PC
Getting a new PC is exciting and a pain. It's exciting because you get a faster processor, more storage and all the latest stuff even though it's outdated as soon as it hits your desk. The pain comes with re-installing all of your programs, re-customizing your preferences for programs, applications, and Windows, and transferring data to the new PC.
Review: Implementing the Google Search Appliance in an Intranet environment
Our corporate intranet is a non-framed environment with both Lotus Domino and IIS (.Net and classic ASP) applications and content. We have between 300,000-500,000 pages of web content and documents across more than 1200 "sites" on approximately 30 unique domains. We used to have Inktomi's UltraSeek Server 3.0 as our intranet search engine which was beginning to look like its age (purchased in 1998). The Inktomi product did not handle attachments well (DOC, PPT, PDF, etc.), would not crawl our secured sites, and was no longer supported by the vendor. We did a cursory review of the search vendors and were immediately attracted to Google's 30 day trial offer for their Google Search Appliance (GSA). After signing a standard agreement, they shipped us a brand new shiny yellow unit which we could test for 30 days before returning or purchasing.
Give Your PC a Monitor Makeover
Whether you are crunching figures at a front office job or crouched over a blood and gore video game in some deep recess of your room, there is the right kind of screen available to suit your needs.
Understanding Transistor Data and Replacement
If, for some reason, you can't get an exact replacement for the transistor that you want to replace, you can refer to one of the transistor substitution guides or book, and try to identify a "near replacement". Beware, however. A substitution guide will sometimes list a replacement for your part, even though the two parts are not very similar. The most commonly used transistor substitution guides is the Philips ECG semiconductors Master Replacement Guide. Selecting the right transistor parameters or specifications for the equipment you repair will avoid callbacks from customers. Callbacks or repeated repairs due to wrong transistor substitution will cost you extra money and a waste of time.
What is ESR Meter?
All capacitors have a certain amount of resistance to the passage of AC current. ESR (Equivalent Series Resistance) is the sum of all internal resistances of a capacitor measured in Ohms. An ideal capacitor has ZERO ohms ESR. From the diagram below you can see a resistor in series
with a "PERFECT CAPACITOR". The value of the resistor is called ESR.
Electrolytic Capacitors have a tendency to increase its ESR overtime due to drying or corrosion. High ESR is a frequent problem in today's electronic circuit. Even a 1 or 2 ohms rise in ESR can cause complicated problems. Under normal conditions the ESR has a very low value, which stays that way
for many years unless the rubber seal is defective, in which case the electrolyte's water component gradually dries out and the ESR creeps up with time. The increase in ESR increases both voltage drops within the capacitor and the heat, produced in the capacitors due to resistive heating. If you don't check for ESR, you may be in for a "TOUGH DOG" repair. High ESR is the first sign of a capacitor failure. High ESR will cause complete circuit failure, over heating of capacitor, loading
of the circuit, overstressing of other circuit components and other undesirable effects.
Expansion Cards Part 3: PCI Express
In the first two installments of this series of Tech Tips, we took a look at PCI and AGP, undoubtedly the most common expansion slots in a computer today. With a few key improvements over both of these, PCI Express is destined to replace both and offer a whole new level of computer performance.
Refurbished Laptop Batteries
There are three refurbished laptop battery types, each named for its component materials:
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