in-Tech Revolution» computer terminology

Language of Computer

admin — Sun, 01 Nov 2009 04:07:10 +0000

Basically, software is the language of a computer. And like human language, there are many different computer languages. Essentially, computer software can be divided into three main groups depending on their use and application. These are system software or operating system referred simply as the OS, application software and programming languages. Usually most of us interact with a computer using application software.

System Software: System software or operating system is the software used by the computer to translate inputs from various sources into a language which a machine can understand. Basically, the OS coordinates the different hardware components of a computer. There are many OS in the market. The most popular Os are from the stable of Microsoft. We have all heard, used and wondered at the Windows software, which is an OS. Starting with Windows, Microsoft has migrated to Vista, its latest offering in the market. It may come as a surprise to some that there are other operating systems used by others. Among these UNIX is used for large office setups with extensive networking. XENIX is software which has now become redundant. HP -UX and AIX are some operating systems used by HP computers. Apache OS is quite popular with web servers. IBM still uses proprietary operating systems for its main frames. Proprietary systems are generally built with the help of a variant of UNIX operating system.
Application software: A normal user rarely gets to see the operating system or to work with it. But all of us are familiar with application software which we must use to interact with a computer. Popular examples of application software are the Microsoft office suite which includes Word, Excel and PowerPoint. We have used these applications extensively. Internet explorer, Mozilla Firefox is two applications used to access the internet. E-mail software like Outlook express is used to manage Emails. It is obvious that all software utilized for working on a computer is classified as application software. In fact all user interfaces are an application. The anti-virus is an application and so is the Media player.
Programming languages: Now this is a kind of computer software which is used exclusively by computer programmers. Unless we are also programmers, we are unlikely to come across programming languages. A simple way to understand programming languages is to think of them as bricks which can be used to create applications and operating system. C++, Java and Simlab are some popular programming languages. Generally Java is used for internet applications. C++ is a language of professional developers and used extensively in developing operating systems. PHP is another language used for internet applications. There is a new class of languages which are being utilized for the mobiles. These are light weight, modular languages which are used to design mobile applications.

Information About Barcode Scanner

admin — Sun, 27 Sep 2009 12:12:54 +0000

Narrowing down which type of barcode scanner we are talking about is the first thing we have to do. There are many types of barcode scanners from laser scanners, CCD barcode scanners, imager type scanners, and more. Our first focus will be on how a CCD barcode scanner works.

Basically, CCD barcode scanner is a scanner that has no moving parts. CCD stands for Charged-Coupled Devise Scanner. The scanner has a light source that when pointed to an object or barcode, it illuminates that image. The image is usually a barcode. Once the barcode is illuminated, a reflection is created and the barcode scanner reads that image. This will work through the linear photodiode within the scanner head. This photodiode can read the reflected light off the lines on the barcode. This reflection is a digital image that is then scanned electronically within the devise. When the image is scanned electronically, each bar on the barcode is converted to the corresponding number or letter.

Now we can look at how a laser barcode scanner works. The laser scanner works by sending a low energy light beam or laser beam to read the spacing between a pattern on the image one space at a time. The beam is moving back and forth by using a mobile mirror which causes a blinking effect. You can usually see the red line moving over the barcode. The reflection comes back and is then read by the fixed mirror in the scanner. The scanner then generates analog and digital signals that match the pattern. A barcode reader decoder then processes the information and sends it through the data communications interface.

Knowing how a barcode scanner works answers a lot of questions about where you can use a barcode scanner. They are becoming so popular now, you can find them everywhere in retail stores scanning items.

Computer Ethics

admin — Tue, 04 Nov 2008 19:12:12 +0000

Thou shalt not use a computer to harm other people.
Thou shalt not interfere with other people’s computer work.
Thou shalt not snoop around in other people’s computer files.
Thou shalt not use a computer to steal.
Thou shalt not use a computer to bear false witness.
Thou shalt not copy or use proprietary software for which you have not paid.
Thou shalt not use other people’s computer resources without authorization or proper compensation.
Thou shalt not appropriate other intelectual output.
Thou shalt think about the social consequences of the program you are writing or the system you are designing.
Thou shalt always use a computer in ways that insure consideration and respect for your fellow humans.

common warez definitions 04!

admin — Fri, 01 Feb 2008 05:16:00 +0000

~hey guys this is the continuation of the common wares definition that are usually used by technological groups. So check it out…

Emulator:
An application that simulates another computer system or console using your PC.

Emporio:
It could either mean leet hacking, crew coding, and idownz.

FAQ:
Stands for Frequently Asked Questions.

FAW:
Abbreviation for “Files Anywhere”, a popular, free web storage service.

File Transfer Protocol (FTP):
The method used to transfer files from one computer to another using a modem.

Flaming:
A general net term for “verbally” attacking someone. This can be done via email, bulletin board, chat room or any medium which involves communication across the web.

Freedrive:
Virtual hard drive storage area on the web. Free to join and anything and everything can be uploaded or downloaded.

Freeware:
Unrestricted software that is downloaded from the net and is completely free to use. Often paid for using advertising.

FTP Client / Browser:
A program used to access, upload and download data from FTP sites.

Fxp:
The art of transferring data from one Ftp site to another using the connection speed of the slower of the two computers.

Gamez:
Pretty self-explanatory this one.

Getright:
One of the best download managers available.

Gold:
A piece of software is said to have gone gold when the final version is complete and it is ready to ship to the public.

Gozilla:
Another excellent download manager.

Hacking:
Gaining access to a remote computer without the authorisation to do so. Usually for the purposes of stealing confidential information or the malicious destruction of data.

Hammering:
Repeatedly trying to access an FTP site using an FTP client or download manager.

HTTP:
Stands for “Hypertext Transfer Protocol”. The method you use to view a web page. Always comes before the address of a website in your Url bar.

ICQ:
Derives from the term “I Seek You” and is used for real time chat and transferring files over the internet.

IP Address:
A series of numbers separated by dots used to identify your computer on the Internet.

IRC:
Stands for “Instant Relay Chat”. Used for real time chat and transferring files over the Internet.

~that’s it for now guys, check out for more in my later post! hope you guys like it… c”,)

common warez definitions 03!

admin — Thu, 31 Jan 2008 04:56:00 +0000

~hey guys this is the continuation of the common wares definition that are usually used by technological groups. So check it out…

C?? File:
File extension that indicates that a file is part of an .ace or .rar series of compressed files.

Cgi Scripts:
These are referrers which are used in url?s. When you click on a link with a ?cgi reference you are directed to a sponsor?s website or an anti-leech protected file.

Cookie:
A tiny text file (usually less than 1kb), which is stored on your hard drive when you visit a web site. These are used to remember who you are so that you can access members only areas on the site without having to type in a password every time or to retain your personalised settings so that they are available the next time you visit.

Courier:
Someone who is involved in the logistics of delivering new releases directly from the release groups themselves to FTP sites.

Crack:
A tiny executable file that is used to transform a shareware program into the full version. Also used to remove any copy protection from the main executable of games (this will already have been done in “ripped” warez games).

CRC Error:
These can occur when you try to decompress a file that has become corrupt during the downloading process, usually as a result of too much resuming.

Credits:
The amount of data you are permitted to download from a ratio site. The more credits you have the more software you are allowed to download.

DAP:
A quick way of referring to “Download Accelerator Plus”, a free download manager that claims to speed up file transfers by up to three hundred per cent. It works by making multiple connections to the same file and is paid for by revolving advertising banners.Also supports resume. **EDITOR’S PICK**

DAT File:
File format used for movies, identical in quality and size to mpg as far as I can tell.

DC:
The lazy way of referring to the Dreamcast, Sega’s latest console incarnation.

Decompression:
Unpacking many files that have been stored in a single archive.

Distro:
A concise means of referring to a distribution FTP site. These are huge storage areas which act as a springboard for the transfer of new releases. Their whereabouts are never public disclosed to aid their survival rate. You can think of them as the initial source from which warez emanates.

Direct Downloads:
Links to actual files rather than other warez sites or pages. These are usually gathered together from many different sites and put on one page for your convenience.

DivX:
Movies ripped from a DVD using the DivX video codecs. Can be played back using Media Player.

DIZ File:
Short for description. Very brief text file found in warez archives stating the title of the software, the number of files that makes up the set and the group who released it.

Download (or DL):
Copying files from a web server or FTP site to your computer using a modem.

~that’s it for now guys, check out for more in my later post! hope you guys like it… c”,)

common warez definitions 02!

admin — Sat, 26 Jan 2008 04:04:00 +0000

~hey guys this is the continuation of the common wares definition that are usually used by technological groups. So check it out…

Ace File:
The first file in a series of compressed archives (the one you double click on to decompress all the files at once).

Active List:
Similar to a mailing list, but uses ICQ to send instant messages to subscribers.

Alpha:
Software receives this label when it is in the very early stages of development. Usually full of bugs, so don’t touch it with a barge pole.

Anti-Leech:
A system which uses cgi scripts to prevent people stealing links and then taking the credit for uploading the files.

Appz:
Short for applications. For example Flash 5 or GoLie 5.5.

ASF File:
The worst quality movie file format (still pretty good though), much smaller in size than dat or mpg.

Banner Site:
Password and username restricted FTP site. To get the correct login details you must click on several banners.

Beta:
An acronym for Business Software Alliance, an organisation who are responsible for enforcing anti-piracy litigation. Similar groups in charge of controlling software “theft” include the SIIA, SPA and ELSPA.

BSOD:
Many people read about BSODs on bulletin boards and think that they’re being insulted, but there is no need to get paranoid. It is actually an acronym for “Blue Screen Of Death”. These can occur for a multitude of reasons (old Bill likes to keep us guessing!) and are the bane of PC user’s lives.

Bulletin Board:
A virtual meeting place on the web similar to a chat room except that it isn’t in real time. One person leaves a message then others come along, read it and add a reply. Each new discussion is called a new topic or thread and has it’s own link. Whenever a new topic is created the older topics are pushed one place downwards in the list. When someone replies to an older topic it is brought back to the top of the list.

~that’s it for now guys, check out for more in my later post! hope you guys like it… c”,)

common warez definitions!

admin — Thu, 24 Jan 2008 05:50:00 +0000

~guys check this out, I have here some common wares definition that are usually used by technological groups. Well, at least when you encounter this warez you will not be a dumb anymore right? so guys here they are…

ISO:
A file that is created from an image of a CD. You can make an iso yourself with a program such as Adaptec Easy CD Creator, or you can burn an ISO file to a CD-R to create a copy of a CD.

Bin/cue files:
These are also used to create an image of a CD. Most people burn these with CdrWin or Fireburner. The .bin file contains all the data for the cd, the .cue file is just a small file in text format telling the software exactly how to burn the data onto the CD.

MP3:
Don’t know what these are? What cave have you been you living in? This is a format used to compress music files. You can create your own by encoding .wav files ripped from audio CDs. There are many free players that will play mp3s for you (see the Winamp tutorial)

Ace files:
These are used to compress/archive data. Use WinAce to decompress them, or to make your own. The normal format for ace files is to have .ace, .c01, .c01, etc.

Rar files:
Another compression/archive format. This is most commonly used on iso or bin files in order to split them up into smaller files (15 MB is the norm). Winrar and many other utilities can decompress these. Rar files are usually in the format .rar, .r01, .r02, etc. But don’t be surprised if you don’t see a .rar file. Just open up winrar and point it to .r01. You also may see them packed as .001, .002, etc. (maybe with a .rar, maybe not)

Pub:
This is an FTP that has left on anonymous access. Many are owned by large companies, so they have a lot of bandwidth. This makes it possible for one person to send files there and many people can download them at once =) These are found by scanning ranges of ips (see the FTP tutorial). Just remember, like the name says, these are public. Just because you upload something there or make directories with your name does not make it ‘your pub’. At the same time, realize that if you come across a pub with another person/groups stuff on it that it may be in use to build other pubs from – so don’t ruin it for many people by deleting stuff you find there. For more on this, go read some posts on our Bulletin Board.

Proxy:
A system that is set up to forward packets… There are many different kinds, check out the proxy tutorial for more info. Basically, a proxy server helps cover up your tracks because you connect to remote computers through the proxy. Think of it as the condom of the Internet

SFV Files/ CRC Checks:
SFV files contain information about files that they accompany. You can preform a CRC check on the files using a program such as WinSFV. This compares the information in the SFV file to the file itself. If the information doesn’t match, then the file was probably messed up in transfer somehow.. try downloading it again, from a different source if possible.

~so guys that’s it for now, check it out in another post I will give you the rest ok! enjoy… c”,)

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Understanding what is d’ meaning of Bandwith!!!

admin — Tue, 27 Nov 2007 02:05:00 +0000

Hey guys! do you want to know what a bandwidth is all about???here is the well written explanation about bandwidth, very useful info… hope you guys can get knowledge with this… c”,)

BandWidth Explained
Most hosting companies offer a variety of bandwidth options in their plans. So exactly what is bandwidth as it relates to web hosting? Put simply, bandwidth is the amount of traffic that is allowed to occur between your web site and the rest of the internet. The amount of bandwidth a hosting company can provide is determined by their network connections, both internal to their data center and external to the public internet.

Network Connectivity
The internet, in the most simplest of terms, is a group of millions of computers connected by networks. These connections within the internet can be large or small depending upon the cabling and equipment that is used at a particular internet location. It is the size of each network connection that determines how much bandwidth is available. For example, if you use a DSL connection to connect to the internet, you have 1.54 Mega bits (Mb) of bandwidth. Bandwidth therefore is measured in bits (a single 0 or 1). Bits are grouped in bytes which form words, text, and other information that is transferred between your computer and the internet.

If you have a DSL connection to the internet, you have dedicated bandwidth between your computer and your internet provider. But your internet provider may have thousands of DSL connections to their location. All of these connection aggregate at your internet provider who then has their own dedicated connection to the internet (or multiple connections) which is much larger than your single connection. They must have enough bandwidth to serve your computing needs as well as all of their other customers. So while you have a 1.54Mb connection to your internet provider, your internet provider may have a 255Mb connection to the internet so it can accommodate your needs and up to 166 other users (255/1.54).

Traffic
A very simple analogy to use to understand bandwidth and traffic is to think of highways and cars. Bandwidth is the number of lanes on the highway and traffic is the number of cars on the highway. If you are the only car on a highway, you can travel very quickly. If you are stuck in the middle of rush hour, you may travel very slowly since all of the lanes are being used up.

Traffic is simply the number of bits that are transferred on network connections. It is easiest to understand traffic using examples. One Gigabyte is 2 to the 30th power (1,073,741,824) bytes. One gigabyte is equal to 1,024 megabytes. To put this in perspective, it takes one byte to store one character. Imagine 100 file cabinets in a building, each of these cabinets holds 1000 folders. Each folder has 100 papers. Each paper contains 100 characters – A GB is all the characters in the building. An MP3 song is about 4MB, the same song in wav format is about 40MB, a full length movie can be 800MB to 1000MB (1000MB = 1GB).

If you were to transfer this MP3 song from a web site to your computer, you would create 4MB of traffic between the web site you are downloading from and your computer. Depending upon the network connection between the web site and the internet, the transfer may occur very quickly, or it could take time if other people are also downloading files at the same time. If, for example, the web site you download from has a 10MB connection to the internet, and you are the only person accessing that web site to download your MP3, your 4MB file will be the only traffic on that web site. However, if three people are all downloading that same MP at the same time, 12MB (3 x 4MB) of traffic has been created. Because in this example, the host only has 10MB of bandwidth, someone will have to wait. The network equipment at the hosting company will cycle through each person downloading the file and transfer a small portion at a time so each person’s file transfer can take place, but the transfer for everyone downloading the file will be slower. If 100 people all came to the site and downloaded the MP3 at the same time, the transfers would be extremely slow. If the host wanted to decrease the time it took to download files simultaneously, it could increase the bandwidth of their internet connection (at a cost due to upgrading equipment).

Hosting Bandwidth
In the example above, we discussed traffic in terms of downloading an MP3 file. However, each time you visit a web site, you are creating traffic, because in order to view that web page on your computer, the web page is first downloaded to your computer (between the web site and you) which is then displayed using your browser software (Internet Explorer, Netscape, etc.) . The page itself is simply a file that creates traffic just like the MP3 file in the example above (however, a web page is usually much smaller than a music file).

A web page may be very small or large depending upon the amount of text and the number and quality of images integrated within the web page. For example, the home page for CNN.com is about 200KB (200 Kilobytes = 200,000 bytes = 1,600,000 bits). This is typically large for a web page. In comparison, Yahoo’s home page is about 70KB.

How Much Bandwidth Is Enough?
It depends (don’t you hate that answer). But in truth, it does. Since bandwidth is a significant determinant of hosting plan prices, you should take time to determine just how much is right for you. Almost all hosting plans have bandwidth requirements measured in months, so you need to estimate the amount of bandwidth that will be required by your site on a monthly basis

If you do not intend to provide file download capability from your site, the formula for calculating bandwidth is fairly straightforward:

Average Daily Visitors x Average Page Views x Average Page Size x 31 x Fudge Factor

If you intend to allow people to download files from your site, your bandwidth calculation should be:

[(Average Daily Visitors x Average Page Views x Average Page Size) +
(Average Daily File Downloads x Average File Size)] x 31 x Fudge Factor

Let us examine each item in the formula:

Average Daily Visitors – The number of people you expect to visit your site, on average, each day. Depending upon how you market your site, this number could be from 1 to 1,000,000.

Average Page Views – On average, the number of web pages you expect a person to view. If you have 50 web pages in your web site, an average person may only view 5 of those pages each time they visit.

Average Page Size – The average size of your web pages, in Kilobytes (KB). If you have already designed your site, you can calculate this directly.

Average Daily File Downloads – The number of downloads you expect to occur on your site. This is a function of the numbers of visitors and how many times a visitor downloads a file, on average, each day.

Average File Size – Average file size of files that are downloadable from your site. Similar to your web pages, if you already know which files can be downloaded, you can calculate this directly.

Fudge Factor – A number greater than 1. Using 1.5 would be safe, which assumes that your estimate is off by 50%. However, if you were very unsure, you could use 2 or 3 to ensure that your bandwidth requirements are more than met.

Usually, hosting plans offer bandwidth in terms of Gigabytes (GB) per month. This is why our formula takes daily averages and multiplies them by 31.

Summary
Most personal or small business sites will not need more than 1GB of bandwidth per
month. If you have a web site that is composed of static web pages and you expect little traffic to your site on a daily basis, go with a low bandwidth plan. If you go over the amount of bandwidth allocated in your plan, your hosting company could charge you over usage fees, so if you think the traffic to your site will be significant, you may want to go through the calculations above to estimate the amount of bandwidth….

so guys! enjoy and keep moving forward… c”,)

Understanding what is d’ meaning of Bandwith!!!

admin — Tue, 27 Nov 2007 02:05:00 +0000

Hey guys! do you want to know what a bandwidth is all about???here is the well written explanation about bandwidth, very useful info… hope you guys can get knowledge with this… c”,)

If you do not intend to provide file download capability from your site, the formula for calculating bandwidth is fairly straightforward:

Average Daily Visitors x Average Page Views x Average Page Size x 31 x Fudge Factor

If you intend to allow people to download files from your site, your bandwidth calculation should be:

[(Average Daily Visitors x Average Page Views x Average Page Size) +
(Average Daily File Downloads x Average File Size)] x 31 x Fudge Factor

Let us examine each item in the formula:

Average Daily Visitors – The number of people you expect to visit your site, on average, each day. Depending upon how you market your site, this number could be from 1 to 1,000,000.

Average Page Size – The average size of your web pages, in Kilobytes (KB). If you have already designed your site, you can calculate this directly.

Average File Size – Average file size of files that are downloadable from your site. Similar to your web pages, if you already know which files can be downloaded, you can calculate this directly.

Usually, hosting plans offer bandwidth in terms of Gigabytes (GB) per month. This is why our formula takes daily averages and multiplies them by 31.

so guys! enjoy and keep moving forward… c”,)