Mashed Articles

Today I was in for a surprise: at a customer I was investigating how to reach an FTP server outside their firewall. From within my browser I could easily reach the FTP server with the URL
ftp://user:password@ftp.company.com, thereby going through the FTP/HTTP proxy.

But when I tried to do the same with FileZilla, the free FTP client, I couldn’t access the FTP server. Ultimately I did some sniffing using WireShark. And to my surprise, the browser was talking HTTP tot the proxy, no FTP on the wire! I noticed the HTTP request “HTTP GET ftp://…” being sent to the proxy. And FTP listings coming back, formatted as HTML!

So learned a new thing: “FTP over HTTP” !

Writen by Elizabeth Morgan

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 providers for accessing the Web.

Earlier computer cables had far less speed and connectivity. With improvements in technology, the quality of cables has improved. Still all these cables occupy a lot of space and need to be replaced when needed. Accessories such as cables are expensive and should be maintained properly.

Computer cables are an important component of any desktop PC. The boom in Internet technology has increased the demand for PCs and in turn, the demand for cables. However, an increasing number of people today have started using laptops and mobile phones to access the Internet. These devices need fewer cables. The popularity of these devices is growing, as they are more handy and manageable.

Cables provides detailed information on Network Cables, Cables, Computer Cables, USB Cables and more. Cables is affiliated with Cable Modem Reviews.

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Last month I did a review of
the Book HTML
Utopia: Designing without Tables using CSS and how it taught you to use the
advanced features of Cascading Style Sheets (CSS) instead of the “old school” table
based layouts.  CSS is one of the mandatory skills that anyone doing web development
needs to have.  Another is a good understanding of JavaScript and the HTML DOM
(Document Object Model).

Quick Review

DHTML
Utopia: Modern Web Design Using JavaScript & DOM by Stuart
Langridge is a great book for learning how to write client side browser code that
takes advantage of the richness of browser DOM.  The book is well written and
includes thorough, clear and precise examples.  In today’s environment of richer
and richer client applications, this can be a great tool for learning the ins and
outs of this style of client side development in a robust, supportable fashion.

Why not just use a framework?

Just this last week Scott Guthrie announced on
his blog that Microsoft would be included jQuery inside
of Visual Studio (starting within the next few weeks as a download).  jQuery
is just one of many great JavaScript frameworks that have abstracted out much of the
complexity of dealing with JavaScript and the HTML DOM.  jQuery (like the other
frameworks) creates an abstraction layer that means you do not have to deal with the
differences between browsers or the differences between versions of a browser.

With so many great frameworks out there, why would you need to learn the “raw” or
“low level” coding that is discussed in the DHTML Utopia?  Technically you would
not need to, but if you are like me you have a natural curiosity of what is going
on below the covers, even if you use a framework like jQuery.  And that understand
is what this book gives you.  Also no framework will ever cover every use case,
so it is good to know the details, in case you need to drop down and “roll your own”
solution.

A little dated

The book was published in 2005, which means that much of the material is probably 4 years old (due to the publishing lead times).  As a result, the specific browser versions are at least one major version out of date (example: all Internet Explorer discussion are version 6, not the current version).   If you disregard the specific discussions, the book does a good job of standing the test of time for 2 reasons: the specific issues that he discusses are still prevalent on the Internet today and more importantly he talks about some great techniques for not coding to specific browser versions anyway.

Writen by Richard Romando

A contraption that contains or encases the ink, an inkjet cartridge comes in different combinations. With the proliferation of models of inkjet printers from various manufacturers, inkjet cartridges also come as separate black and color cartridges, black and color ink in one cartridge, and ink tanks for every ink color. An ink tank of several inkjet printers houses the control circuitry, which decodes the information transmitted from the computer to the printer, and the print head, wherein the nozzles are located.

Only a handful of companies supply printers with a built-in print head. The print head of some inkjet printer models are already incorporated and fixed inside the printer itself. The good thing about this is that a user need not replace the print head every time the ink runs out. On the other hand, the entire printer should be replaced or repaired once the print head itself is damaged.

By and large, a print head is connected to detachable and replaceable ink tanks. Most models of up-to-date inkjet printers are designed with this kind of setting. Unlike in a printer with a fixed print head design—wherein the entire printer has to be replaced if broken—this inkjet technology is not as costly since a user can just purchase a new cartridge if the print head breaks down. However, when the inkjet cartridge frays or runs out of ink, the whole cartridge should be replaced. A brand-name inkjet cartridge costs more than a laser cartridge, which makes inkjet printers costly and difficult to maintain and operate. However, cost-conscious consumers today have opted for compatible standard inkjet cartridges or make use of refill kits. These cheaper alternative ink tanks and refill sets or remanufacturing services appeal to economical computer-users but not to selected printer makers.

Inkjets provides detailed information on Inkjets, Inkjet Cartridges, Inkjet Printers, Color Inkjets and more. Inkjets is affiliated with Inkjet Printer Cartridges.

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Writen by David Au

Your monitor is the single most expensive component in your pc system. This means that a lot of money can be saved if you make the right decision and choose the right cheap computer monitor. There’s a lot more to computer monitors than just the size of the screen. Read on to find out what to look for when choosing cheap computer monitors.

The features of a computer monitor: A computer monitor is like a high quality TV set. The difference is that with a computer monitor you sit very close and try to make out fine details such as words.

This means that a computer monitor must have very fine definition and an image that is nice and stable on the screen so you do not get eye-strain. You will spend a great deal of time staring at a computer monitor so it is important that you get one that suits you perfectly.

When you are looking for cheap computer monitors you will be given different specifications. These numbers can be confusing so let us look at what the specifications mean when you are sitting in front of your monitor.

Resolution: This is the number of pixels on the screen. Say your screen is set to 1024 by 768 it means that there are 1024 along the top of the screen. This means that if you had a picture that was 1000 pixels wide you could see the whole picture without zooming out and losing details.

Monitors will be described as having a maximum resolution. This will be the highest setting possible. Usually the monitor will have an optimum setting slightly below this resolution.

High resolutions are great if you want to look at graphics because more of the picture will fit on the screen at once. However if you are looking at text a letter 5 pixels high will get smaller and smaller as the resolution increases. This means that if you are only going to surf the net and do email then you will be wasting money and straining your eyes with a high resolution monitor.

All new 15 inch monitors will do 1024 by 768. If you are looking for a cheap computer monitor then get one capable of this resolution.

If things are too small then you can always lower the resolution to 800 by 600. You may also be able to raise the resolution but doing this will lower the vertical refresh rate. Read on to find out why you must spend more to get a monitor to run high resolutions.

Vertical Refresh Rate: This is a very important specification. The speed that a monitor draws an entire screen, called the “vertical refresh rate” or “frequency,” is measured in hertz (Hz).

To prevent eye-strain you want your monitor to be running the current resolution at around 85Hz. This will make the image stable. At lower refresh rates the screen will flicker and you may not notice it at first but you will notice the splitting headache you get after about an hour of use at a low refresh rate.

The vertical refresh rate dcreases as the resolution increases. In the monitor manual look for the resolution that has 85 vHz next to it. This will be the optimum resolution for the monitor. Setting the monitor any higher will damage both your eyes and your monitor over time.

Monitor size: This is easy to understand. Bigger monitors make the picture bigger so that you can have higher resolutions without text getting too small. This makes less work for your eyes. Buy as big as you can afford. Currently 17 inch monitors are great value. If your interested in having a look at some great prices for computer monitors then click the ad on both the right and left sidebar to find out the monitors that match your need.

Dot Pitch: In trying to evaluate a monitor’s quality, most people will usually talk about dot pitch. In general, the lower the dot pitch (measured in millimeters), the better the monitor. The problem is that dot pitch can be measured in many different ways, and therefore doesn’t necessarily mean much.

A low dot pitch will make text crisp but as I said there is no standard measurement to compare. Usually spending more money will increase the monitor quality.

I found the best way to ensure that a monitor has a nice crisp image is to buy a good brand. I found an excellent deal on Viewsonic 17″ monitors. Viewsonic is a trustworthy brand.

Choosing cheap computer monitors should take time. There are some excellent bargains out there at the moment. Remember if you don’t have a huge demand for a high resolution monitor then get a 15 inch. It will still display sharp graphics at low resolutions and at these low resolutions things will be nice and big for your eyes.

I am David Au working part-time with my online business selling other people’s stuff … Selling * Computer Notebooks…. * Software and the *Ad Space for Google AdSense in my own websites http://www.clicksbucks.com/index.html and http://www.bestbuyguide.net/index.html

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