christmas computer backgrounds

This year give your computer winter holiday look of christmas festival by setting these christmas computer backgrounds. Spread the message of Xmas by sharing these free backgrounds with all your nearones and dearones. The snowy night, cute snowman, lovely fire scene of the night and other scenes. Add loads of fun and cheer to your work environment by downloading these free backgrounds.

Christmas Ornaments on White Background

Access our free christmas backgrounds to place as wallpaper on your desktops or laptops with easy download facility. The white christmas background with ornaments, bells, balls, candles and other stuff make great selection to view the christmas festival scene. For more free backgrounds, please explore http://christmaswallpapers.info/wallpaper/Free-Christmas-Background/ .

BDPA

BDPA Education and Technology Foundation (BETF) encourages all of our supporters to find a way to get engaged in the upcoming Computer Science Education Week (CSEdWeek). CSEdWeek 2010 is a call to action to raise awareness about computer science education and computing careers. CSEdWeek is endorsed by the U.S. Congress and designated as December 5-11, 2010 in recognition of the birthday of computing pioneer Admiral Grace Hopper (December 9, 1906).

CSEdWeek aims to:

• Eliminate misconceptions about computer science and computing careers.
• Communicate the endless opportunities for which computer science education prepares students in K-12, higher education and careers.
• Provide information and activities for students, educators, parents, and corporations to advocate for computer science education at all levels.

Why Computer Science?
Computer science is ubiquitous; it touches everyone’s daily lives and plays a critical role in today’s society by driving innovation and economic growth. The field is shaping the future by solving some of the world’s grandest challenges and creating today’s most exciting innovations. Computing related jobs remain strong despite the nation’s extraordinary economic challenges.

Why Computer Science Education?
Computer science education is essential to:

• Expose students to critical thinking and problem solving.
• Instill understanding of computational thinking for success in the digital age.
• Train students for computing careers that are exciting, plentiful and financially rewarding.
• Prepare students to tackle the world’s most challenging problems.

Yet as the role and significance of computing has grown, the teaching of computer science in our K-12 education system has dramatically declined. There is insufficient innovative computing curricula for students at all levels; few students have the opportunity to study computer science in an engaging and rigorous way; there is a lack of ethnic and gender diversity among those who do take computer science courses; and teachers have few opportunities for professional development and certification in computer science education.

Join In! Everyone can participate:

• Take the CSEdWeek pledge! Register your support and share your plans to celebrate at www.computinginthecore.org.
• ‘Like’ CSEdWeek on Facebook at www.facebook.com/CSEdWeek and join the conversation.
• Blog, tweet, and post to spread the word and raise awareness.
• Use the #CSEdWeek hashtag.
• Celebrate CSEdWeek in your BDPA chapter, school, club, or workplace.
• Visit http://www.CSEdWeek.org for other suggested activities and resources.

Sponsors and Partners
CSEdWeek is a collaborative effort of the Association for Computing Machinery (ACM), National Science Foundation (NSF), Computer Science Teachers Association (CSTA), National Center for Women & IT (NCWIT), WGBH, Computing Research Association (CRA), Anita Borg Institute for Women in Technology (ABI), Microsoft, Google, SAS, Intel, and the Defense Advanced Research Projects Agency (DARPA).

CSEdWeek is an activity of Computing in the Core, a non-partisan advocacy coalition of associations, corporations, scientific societies, and other non-profits that strive to elevate computer science education to a core academic subject in K-12 education.

laptop computer

laptop computer

A laptop computer, also known as a notebook computer, is a small personal computer designed for mobile use. A laptop integrates all of the typical components of a desktop computer, including a display, a keyboard, a pointing device (a touchpad, also known as a trackpad, or a pointing stick) and a battery into a single portable unit. The rechargeable battery is charged from an AC/DC adapter and has enough capacity to power the laptop for several hours.
A laptop is usually shaped like a large notebook with thickness of 0.7–1.5 inches (18–38 mm) and dimensions ranging from 10x8 inches (27x22cm, 13" display) to 15x11 inches (39x28cm, 17" display) and up. Modern laptops weigh 3 to 12 pounds (1.4 to 5.4 kg), and some older laptops were even heavier. Most laptops are designed in the flip form factor to protect the screen and the keyboard when closed.
Originally considered "a small niche market" and perceived as suitable for "specialized field applications" such as "the military, the Internal Revenue Service, accountants and sales representatives"[ battery-powered portables had just 2% worldwide market share in 1986But today, there are already more laptops than desktops in the enterprise and, according to a forecast by Intel, more laptops than desktops will be sold in the general PC market as soon as 2009.
Contents

History
Main article: History of laptops

The Epson HX-20
As the personal computer became feasible in the early 1970s, the idea of a portable personal computer followed; in particular, a "personal, portable information manipulator" was envisioned by Alan Kay at Xerox PARC in 1968 and described in his 1972 paper as the "Dynabook"
The first commercially available portable computer appeared nine years later, in 1981. The Osborne 1 weighed 23.5 pounds (10.7 kg). It had no battery, a tiny 5" CRT screen and dual 5¼" single-density floppy drives. In the same year the first laptop-sized portable computer, the Epson HX-20, was announced. The Epson had a LCD screen, a rechargeable battery and a calculator-size printer in a 1.6 kg (4 pounds) enclosure.
The first notebook using the clamshell design, utilized today by almost all laptops, appeared in 1982. The $8150 GRiD Compass 1100 was purchased by NASA and the military among others. The Gavilan SC, released in 1983, was the first notebook marketed using the term "laptop".
From 1983 onwards:
Several new input methods were introduced: the touchpad (Gavilan SC, 1983), the pointing stick (IBM ThinkPad 700, 1992) and handwriting recognition (Linus Write-Top, 1987).
CPUs became designed specifically for laptops (Intel i386SL, 1990), targeting low power consumption, and were augmented with dynamic power management features (Intel SpeedStep and AMD PowerNow!).
Displays reached VGA resolution by 1988 (Compaq SLT 286) and 256-color screens by 1993 (PowerBook 165c), progressing quickly to millions of colors and high resolutions.
High-capacity hard drives and optical storage (CD-ROM followed by DVD) became available in laptops soon after their introduction to the desktops.
Early laptops often had proprietary and incompatible architectures, operating systems and bundled applications.

Laptop - Wikipedia, the free encyclopedia
A laptop computer, also known as a notebook computer, is a small personal computer designed for mobile use. A laptop integrates all of the typical ...en.wikipedia.org/wiki/Laptop - 125k -
PO-laptop.org-top-level-ne - OLPC
16 अक्टोबर 2007 ... This is one of the template files for the laptop.org website. ..... "One Laptop per Child" and the OLPC logo are trademarks of the One ...wiki.laptop.org/go/PO-laptop.org-top-level-ne One Laptop per Child (OLPC), a low-cost, connected laptop for the ...
One Laptop per Child (OLPC) is a new, non-profit association dedicated to research to develop a low-cost, connected laptop, a technology that could ...laptop.org/
LAPTOP Magazine - Product reviews, tech news, buying guides, and more
LAPTOP Magazine is your complete mobile gear guide. We review the latest mobile tech products and provide expert buying advice, plus breaking industry news.www.laptopmag.com/ - Laptop Computers - Buy.com
Find, shop for and buy Notebook Computers at buy.com.www.buy.com/cat/laptop-computers/212.html

PC Pitstop: Laptop Battery Fire
happen to you. More Info: http://www.iphoneinapple.blogspot.com/ http://www.iphoneinapple.blogspot.com/
Apple - MacBook
The new MacBook laptop features a precision aluminum unibody enclosure, more powerful NVIDIA graphics, a 13-inch LED-backlit display, and more.www.apple.com/macbook/ Laptop Computers: Compare HP Laptops
Research, browse or buy a laptop. Multiple laptop options for home, gaming or business.laptop.hp.com/ -
Laptop Computer Reviews and Opinions - Laptopical.com
Find a laptop that suits you at Laptopical.com – reviews of the latest laptop computers with accessible and unbiased guides and comparisons.www.laptopical.com/ -
Acer Notebook , Toshiba Laptop , Acer Dizüstü Bilgisayar
Ucuz notebook hp laptop notbook notbok leptap notebook acer notebook dell notebook hp notebook toshiba laptop acer 5033 acer 1642 toshiba l20 dell 6000 ...www.pcdepo.com/ -

Free Windows Antivirus Tools

One way to protect your Windows based computer from the onslaught of spyware and viruses is by having a good antivirus program. Most antivirus applications cost $30 to $80 or more per year.

Fortunately there are two excellent FREE antivirus programs for Windows XP, Vista and Windows 7.

The first is AVG. This great antivirus tool has professional versions as well as a free home version. It is good at stopping most viruses and spyware from entering your computer. It also updates new virus definitions automatically. Download your copy from AVG Technologies website.

The second choice, and one we recommend is Avast Antivirus. Avast has the same great protection and auto-update features of AVG, but also adds a Boot Time Scanner feature. Often spyware can be completely removed by scheduling a boot time scan - which runs before the Windows operating system starts up. Download a free home edition directly from Avast Software's website.

Please Note: both AVG and Avast offer professional versions of their antivirus tools for business and professional users.

Popup Warnings May Be Rogue Spyware

You turn on your computer and notice a popup window warning you that it has detected a serious problem that needs to be fixed right away.

The program warning you of the threat may even run through a scan, displaying just how bad the problem really is. The funny thing is you've never seen the warning program before, but it looks legitimate. To make matters worse, your computer is acting funny. You may not be able to access the internet, your files, or it's shutting down randomly.

Then you get the punchline... the program tells you that in order to correct the serious problems, you need to turn on a special feature that costs money. Insert your credit card please. STOP! This program, and all the threats it reports are fake. The sole purpose of these rogue spyware programs is to rob you. If you do pay the fee with your credit card, the program will not go away, and thieves gain access to your personal identity and credit card information.

Rogue spyware looks like legitimate security software in order to fool the average computer user into trusting it. Rogues come with names like Registry Patrol, SpySheriff, Antivirus Pro, Mac Defender, Windows Repair, and many more.

Preventing Spyware Infection
There is no 100% effective way to prevent spyware from getting on an internet connected computer. An antivirus program is a must have, but it cannot be the only defense you use. We have seen spyware shut off the Windows Security Center; which disables the firewall, antivirus program, and auto update features.

To protect your computer you need to employ "defense in depth":

1. Have an up-to-date active antivirus program running on your computer. There are professional and free versions that do a good job. If you have a professional version please do not ignore the reminders to renew your subscription.
2. Install an anti-spyware program. For Windows we recommend Malwarebytes AntiMalware or SuperAntiSpyware. Consider upgrading to the professional versions of either of these two programs to get the auto-updating and scheduled scanning features. If you can't afford that, be sure to run your free anti-spyware program at least once a week. Update it first, then scan. For Mac owners you can get away with just running either Sophos Antivirus Mac Home Edition (free) or the professional MacScan.
3. Keep your Mac or Windows computer updated. Apple and Microsoft are good at releasing frequent security updates. A lot of users ignore update reminders.
4. Windows users should install the free Firefox browser, and make it their default browser.

Removing Spyware
Removing active rogue spyware (or any malware) can be tricky. Here are some good first steps to try and take care of the problem yourself:

1. If you have an antivirus program installed, run it. Try to update it, then run a full scan.If you have an anti-spyware program previously installed, try it as well.
2. Windows users can use the System Restore utility to put their computer back in time to a point before the trouble began. Sometimes rogue spyware can turn off your restore points or shut down the service - eliminating this approach.
3. Mac users who use Time Machine with a backup drive can restore the entire computer safely from backup. Knowing how long the spyware has been active on your system will help you judge how far back in time you should go.
4. If you have access to a non-infected computer, Google the name of the spyware program and look for removal instructions.

Parts of a Computer

Parts of a Computer

Modern computers come in many shapes and sizes. From desktops and towers, to laptops, netbooks, tablets and some smart phones are all computers. While they look different, they share the same basic features and functions.

This quick tutorial should help familiarize you with the parts of a computer system.

All computers are made up of four basic building blocks. Here is a quick overview:

1. Input: how the computer gets information from you, usually through a keyboard or mouse.
2. Processing: once you tell the computer what to do, it has to process the information and communicate the result back to us or store it for later retrieval.
3. Storage: a computer can save information in two basic ways; temporary storage (in memory chips), and more permanent storage (saved to the hard drive or other storage media).
4. Output: once a computer has processed information it often will send the results back to you through a display monitor or printer.

The Computer System
The typical desktop computer system consists of the computer (either desktop or tower unit), a monitor, a keyboard, and a mouse. A complete computer system also includes a set of speakers and a printer.

Inside the Computer Case
The box (or case) of the desktop or tower computer contains several electronic components:

Motherboard, the main circuit board where the processor, memory chips, and expansion cards are attached.

Power supply, converts power from your AC wall outlet to low-power DC needed by the computer components.

A peek inside the Hard Drive

Hard Drive, a device where information is stored and retrieved. Your operating system and application programs are stored here. Some people mistakenly refer to the computer desktop or tower as the "hard drive". A hard disc drive is actually a small rectangular device. It features rotating rigid platters on a motor-driven spindle within a protective enclosure. Data is magnetically read from and written to the platter by read/write heads that float on a film of air above the platters.

Removable Media Drives, allow the reading and writing of data to CD, DVD, and Blu-Ray discs. Removable media may also be in the form of USB thumb-drives, ZIP-disks, tape backups, or memory chips usually used in digital cameras.

The Changing Form of the Personal Computer
The desktop computer is the traditional form of a personal computer. There are a variety of form factors that computers come in, including:

Laptop and Netbook size comparison

Laptop or Notebook Computer, a small battery or AC-powered personal computer hat can easily be transported and conveniently used in temporary spaces such as on airplanes, in libraries, temporary offices, and at meetings. A laptop typically weighs less than 5 pounds and is 3 inches or less in thickness.

Netbook, A small laptop computer that is smaller than a notebook, designed primarily for accessing Internet-based applications.

all-in-one computer

All-in-One, a desktop computer where the computer case is integrated into the monitor. This gives the all-in-one computer system a smaller overall profile than a desktop computer system. There are less cords and components taking up room on your desk as well.

While desktop and tower computers offer greater expandability, all-in-one's offer style.

Tablet Computer, a type of notebook computer that has an LCD screen on which the user can write using a special-purpose pen, or stylus. Some tablets use touch screens and allow the user to use tap the screen with their fingers.

Common Input Devices

Keyboard
A keyboard is used for typing text into the computer. A keyboard can be a physical keyboard with real keys, or a virtual keyboard on a touch screen. It has keys for letters and numbers, as well as special keys:

Navigation Keys or Touch Pad, allows you to move your position within a document, application, or web page.

Apple's iPad tablet has a virtual keyboard.

Function Keys, near the top of the keyboard allow you to access special commands of your operating system.

Numeric Keypad, provides quick 10-key number entry.

Programmable Keys, some keyboards have special keys you can program to launch your favorite applications (like email, web browsing). Certain games and programs can have actions assigned to the programmable keys as well.

Mouse

A mouse is a small device used to point and select items on your computer screen. A mouse has one or more buttons, and may include a wheel to help scroll the screen. When you move the mouse with your hand, a pointer on your screen moves in the same direction. When you want to select an item, you point to the item and then click (press and release) the left button.

Mac computers usually come with a mouse that has a single button. Windows computers typically employ a two-button mouse. Clicking the secondary button (called a "right click") brings up an options menu. Mac users hold down their Control key on the keyboard and press the mouse button to perform a right click.

Touchpad

A touchpad is a small touch-sensitive device that senses the position of the user's finger and moves the pointer on the screen accordingly. Touchpads are commonly found on laptop computers and some keyboards.

Buttons below the touchpad work in the same manner as buttons on a mouse. In the picture at right, the touchpad includes a scroll bar which serves the same purpose as a wheel on a mouse.

Laptop computer's usually have a key or button that allows the user to turn off the touchpad. This is handy if you wish to type without accidentally moving the cursor, or if you intend to use a traditional mouse instead.

Fresh Era of Computer systems

The name computer iteration is needed in numerous progress of new software. Each generation of computer involving pc’s is known by means of key engineering growth this essentially changed exactly how pc’s operate, causing progressively more smaller, more cost-effective, effective, productive in addition to reputable devices. Personal computer iteration will be people’s technology regarding know-how for an improvement connected with early on checking machine, ABACUS!

The initial PCs have been made to the nuclear energy market. Products must be rewritten to operate on a variety of PCs. The microprocessors introduced up to date creation of personal generation of computer. Your chip features reduced the dimensions of PCs on the bulky slow computer systems to a size of personal computers that could be set about pc or perhaps notebook.

The desktops are becoming more compact; therefore swiftness, strength as well as memory space have got reasonably higher. Producers involving refurbished desktops are selling good enough assistance by producing low cost desktops along with reasonably priced price, giving very same operation since the fresh unit. While most persons are can’t acquire new brand name designs, they prefer to acquire utilized personal generation of computer, low-cost overhauled PCs that are easily obtainable, simple to use along with is effective successfully. This is the department of computing interested in producing PCs respond such as humans!

Altec Lansing VS2521 – A different Creation regarding Computer system Speakers

This Altec Lansing VS2521 laptop or computer presenter features altered the way we view laptop audio system. It used to be the fact that the majority of you essential from the generation of computer audio speakers is a little chunk of pizazz to know your music from the favorite video games. Placed on which system was obviously a two of substantial, rectangular speakers plus doable several multichannel surround sound systems loudspeakers located round the home.

Now, the lead offers shifted to the generation of computer. Needless to say, without some good audio speakers for example Altec Lansing vs2521, your new computer based sound system is not entire.

The good news is that the Altec Lansing vs2521 audio system may not be just about anywhere near the size of individual aged bulky people that had been that comes with a person’s mum or dad sound system. You can get Altec Lansing vs2521 audio system for a various personal computer as well as large invest in suppliers within the country.

Following Creation with Computer system Online games in addition to Electronic Reality

While in the following technology involving computer games we will have the generation of computer method essentially making by itself as being the person takes on along. Very well, that could off times be an extremely pricey CD, video gaming won’t as well as online certainty system for making or perhaps acquire? Becoming contained in a present game would likely are terrible, yet developing and taking part in within a Matrix is indeed the long run associated with laptop or computer game playing as well as virtual simple fact and that is certainly generation of computer x associated with online games.



LCD Televisions – Generation x involving Pc Monitor

generation of computer system screens possess until now been recently usually ungainly as well as took up needless space. For starters, modern-day Liquid crystal display projector screens are much more complex more shapely when compared with their Cathode ray tube predecessors therefore use up less area, in addition to second of all the majority of Digital displays are meant in order to present day LCD screen aspect percentages although CRT’s in which largely the regular square design.

Although LCD TV projection screens will be significantly more versatile and also adaptive than the more aged Cathode ray tube watches people continue to have to be secured out of detrimental elements if they are specifically around business or even manufacturing plant shop flooring configuration settings.

Such as a CRT observe envelopment, the LCD enclosure presents watertight along with dustproof safeguard whilst as well guaranteeing the LCD will be operating for the ideal temperature.