Three Dimensional Painting

 Inventors Max Bogue and Peter Dilworth have invented a unique pen that draws in the air.

A colorful spool of plastic thread is fed into the pen.

The thread is then extruded as heated plastic that cools and solidifies instantly as it exits the tip.

This allows solid 3D structures to be drawn on any surface or from any surface into the air.

The pen, called a 3Doodler, weights approximately 7 ounces (198 g) and is 7 inches (17.7 cm) long. It requires no technical knowledge or software and plugs into an electrical outlet.

Max and Peter have received over 2.2 million dollars worth of advanced orders for their three dimensional printing pen.

They expect to fulfill those orders and launch the product in the fall of this year.

The co-inventors met while working for WowWee, a company based in Hong Kong that develops consumer technologies.

Peter consulted WowWee as an independent inventor. He had previously worked on robotics at MIT and contributed to a number of innovations including the infamous Uno Dicycle motorcycle.

Max was an R&D project manager with WowWee and has extensive experience in bringing products to market.

click here to watch the video:

http://www.youtube.com/watch?v=DQWyhezIze4&feature=youtu.be

A Software Can Judge Your Mood Through Your Photos

A new 'mood-judging' software developed by an Indian-origin scientist can pick out the happiest snaps from a wedding or help you choose gleeful photos for your Facebook profile. 

The software by Abhinav Dhall at the Australian National University in Canberra and colleagues analyses all the faces in a photo to give the shot an overall "mood score". 

The team used face tracking software to analyse the smiles of the faces in a group by noting the positions of nine spots on the face such as the corners of the mouth and eyes. 

A machine learning algorithm, trained on photos that had been pre-labelled by humans, then used this data to give each face a smile intensity score, 'New Scientist' reported. 

The team also programmed the system to incorporate information from volunteers, who assessed how important the intensity of any individual's smile was to the overall mood score of a photo. 

Those who were standing near the centre of a picture were given a stronger weighting, for example, while partially obscured faces were less influential. 

When asked to gauge the happiness level of a photo, the system only deviated from the opinion of a human by around 7 per cent. 

Dhall said the aim is to be able to assess the overall mood of a group from a single shot. By looking at a sequence of frames in a video, it could even gauge the mood of a crowd in real time. 

"If the mood score goes down over the time, we can assume that the group are getting angry. It could also be used to view albums on Facebook by arranging photos so the happiest ones are shown first, for example," said Dhall.

Source: The Times of India

Now Charge Your Mobile Phone With Water

WASHINGTON: Researchers in Sweden have developed a new technique where you can charge your devices anywhere without electricity, provided there is a water source nearby. Just add a spoonful and get instant power, anytime anywhere. 

Handy for anyone who spends time away from electricity, the small, lightweight PowerTrekk could power critical devices for warfighters and aid workers deployed to remote areas of the world, Fox News reported. 

Developed by a team in Sweden's KTH Royal Institute of Technology and made by MyFC, it's the world's first water-activated charging device that powers using fresh or salt water, the developers claimed. It can extend battery life up to 3 watts. 

So if you take an iPhone, the charge would be enough for between 25 and 100 per cent of its battery capacity. Any convenient water can be harvested for power, from a kitchen faucet through to a puddle in the jungle. 

Solar charging can be affected by the weather and the position of the sun, of course, and not hugely helpful if your urgent power shortage hits at night. Water charging isn't hindered by these external factors. Even in a desert, a spoonful of water from your thermos can give you power. 

The new device leverages the team's more than 15 years of research on micro fuel cell technology and small flat Proton Exchange Membrane fuel cells at the Department of Applied Electrochemistry at KTH. 

To use the PowerTrekk charger, you fill-up water compartment with about one tablespoon, close the lid and connect it to the electronic device with a USB cable. It starts charging automatically as the water inside interacts with a small disposable metal disc causing hydrogen gas to be released. 

When the gas combines with oxygen it converts chemical energy into electrical energy. While in many ways fuel cells are similar to batteries, they are different in that electrodes do not become consumed making them finite. 

Instead provided water and air is provided to the electrodes, these fuel cells will run. Very green power, water vapor is the only by-product. 

Currently, Powertrekk works with devices like cell and smartphones, digital cameras, iPods and GPS. The company is looking into developing their fuel cells to function for larger devices like laptops.

Source: The Times of India

iWatch

Cloud Computing

Cloud computing is the term used to describe technology that will replace how we currently use our computers and software applications.

The concept of cloud computing is that any device (computer invention) connected to the Internet can utilize a network of computing resources.

This would include infrastructure, applications and storage for far less than what it would cost to use your own hardware, software and resources.

Additionally, it allows users to have access to applications that they would not have otherwise. Access is as simple as using an interface application or just a web browser from any location. cloud computing

The cloud can allow access to millions of computers in an intelligent, scalable and redundant system with expert support.

Similar to outsourcing, the difference and advantages of cloud computing are speed, efficiency, capability and cost, particularly with the increasing popularity of smart phones and tablets.

It allows users to work from anywhere, to perform any task with any application, and to pay for only what you use.

Cloud computing is comparable to using email or online banking where you log into your account to access and manage your information. The software, applications and storage do not exist on your computer.

But unlike your email or online banking services, clouds can perform complicated engineering tasks, schematics, modeling or mathematical computations, and it can do this in a cost effective and efficient manner.

Another major advantage to cloud computing is the reliability of service.

Servers can crash, temporarily denying you online access to services and data. But cloud computing has multiple servers so you always have access.

Some concerns about cloud computing are security and the effect it will have on the computer industry.

The security concerns are similar to those regarding email and online banking.

These have proven to have reliable security protocols therefore similar advanced technology has been adopted for cloud computing.

It's anticipated that computer repair and maintenance, as well as IT employment /contracts will steadily decline as cloud computing rises in popularity.

There has been a proliferation of free public clouds appearing on the internet.

These services, often referred to as SaaS (software as a service) are easy to use, fast, reliable and very good.

You can increase your use of cloud computing to meet a high demand on your resources and you can reduce your usage during low demand. This allows you to adapt to changing conditions without making significant long term investments in personnel, computers, software and operational costs.

Hopefully, cloud computing will assist independent inventors and small businesses to be more efficient and cost effective.

At the very least, it's a leveling of the playing field.

How to make a simple PowerPoint game?

1. Open Microsoft PowerPoint
2. Create a new, blank
presentation by pressing Ctrl-
N .
3. Make sure the first slide's
layout is the title slide .
4. In the title box, name your
new game .
In the title box, name your
new game.
5. In the subtitle box, write
"Click Here" .
6. Create a new slide, one with a
title and text, by clicking Insert-
>New Slide.
Create a new slide, one with
a title and text, by clicking
Insert->New Slide .
7. Highlight "Click Here" and link
it to slide 2 by selecting it
then right click and go to
hyperlink .
8. A box will pop up. You pick
Place in This Document, pick
slide titles, then slide 2.
9. Create a scenario for this slide
and create options to deal
with the scenario.
Create a scenario for this
slide and create options to
deal with the scenario . For
example, slide 2 would look
like: You are lost in a desert,
do you:
Look for water.
Build a sand castle.
Shoot a camel.
Do nothing.
10. Highlight each option and link
them to another slide that
presents a new scenario . This
new scenario will present the
player with the consequences
of his/her actions. There will
be wrong choices and there
will be right choices.
11. Continue the chain of linked
slides until a final result is
arrived . Enough wrong
choices will lead to a slide that
reads something like 'You
Lose' and enough right
choices will lead to a slide that
says something like
"Congratulations you win!"

World's first Laptop

This is Toshiba T1100, the world first Laptop for the whole market. This was manufactured in 1985. This laptop ran entirely on floppy disks. It had no hard disk...

Hard Drive -- Now & Then

What are CAPTCHAs

Whenever we create an account on any website or comment on any blog we see scrambled words
which we have to type and continue these are CAPTCHAs .

What are CAPTCHAs and what they do?

It stands for Completely Automated Public Turing-test to tell Computers and Humans Apart.These tries to test that you are a person and not a auto filling software.

Why CAPTCHAs are necessary?

These are used to prevent hackers from avoiding misuse of online services.

There are some examples of activities which are undertaken by hackers are given below :-

-Opening someone's account  by attempting different  password again and again.

-Creating  hundreds of  free accounts

-Swaying an online poll by robotically submitting hundreds of false responses. 

-Spamimng blogs by posting dozens of bogus comments.

These CAPTCHAs test prevent about 90% of hackers attacks.

What is a logic behind this CAPTCHAs?

 Commonly, these CAPTCHA phrases are .gif pictures of scrambled words, but can also be .mp3 voice recordings. These pictures and recordings are very hard for conventional software programs to understand, and hence, robots are usually unable to type the phrase in response to the picture or recording.

All Keyboard Shortcuts

Keyboard Shortcuts (Microsoft Windows) 

1. CTRL+C (Copy)
2. CTRL+X (Cut)
3. CTRL+V (Paste)
4. CTRL+Z (Undo)
5. DELETE (Delete)
6. SHIFT+DELETE (Delete the selected item permanently without placing the item in the Recycle Bin)
7. CTRL while dragging an item (Copy the selected item)
8. CTRL+SHIFT while dragging an item (Create a shortcut to the selected item)
9. F2 key (Rename the selected item)
10. CTRL+RIGHT ARROW (Move the insertion point to the beginning of the next word)
11. CTRL+LEFT ARROW (Move the insertion point to the beginning of the previous word)
12. CTRL+DOWN ARROW (Move the insertion point to the beginning of the next paragraph)
13. CTRL+UP ARROW (Move the insertion point to the beginning of the previous paragraph)
14. CTRL+SHIFT with any of the arrow keys (Highlight a block of text)
SHIFT with any of the arrow keys (Select more than one item in a window or on the desktop, or select text in a 
document)
15. CTRL+A (Select all)
16. F3 key (Search for a file or a folder)
17. ALT+ENTER (View the properties for the selected item)
18. ALT+F4 (Close the active item, or quit the active program)
19. ALT+ENTER (Display the properties of the selected object)
20. ALT+SPACEBAR (Open the shortcut menu for the active window)
21. CTRL+F4 (Close the active document in programs that enable you to have multiple documents open 
simultaneously)
22. ALT+TAB (Switch between the open items)
23. ALT+ESC (Cycle through items in the order that they had been opened)
24. F6 key (Cycle through the screen elements in a window or on the desktop)
25. F4 key (Display the Address bar list in My Computer or Windows Explorer)
26. SHIFT+F10 (Display the shortcut menu for the selected item)
27. ALT+SPACEBAR (Display the System menu for the active window)
28. CTRL+ESC (Display the Start menu)
29. ALT+Underlined letter in a menu name (Display the corresponding menu) Underlined letter in a command 
name on an open menu (Perform the corresponding command)
30. F10 key (Activate the menu bar in the active program)
31. RIGHT ARROW (Open the next menu to the right, or open a submenu)
32. LEFT ARROW (Open the next menu to the left, or close a submenu)
33. F5 key (Update the active window)
34. BACKSPACE (View the folder onelevel up in My Computer or Windows Explorer)
35. ESC (Cancel the current task)
36. SHIFT when you insert a CD-ROMinto the CD-ROM drive (Prevent the CD-ROM from automatically playing)


Dialog Box - Keyboard Shortcuts
1. CTRL+TAB (Move forward through the tabs)
2. CTRL+SHIFT+TAB (Move backward through the tabs)
3. TAB (Move forward through the options)
4. SHIFT+TAB (Move backward through the options)
5. ALT+Underlined letter (Perform the corresponding command or select the corresponding option)
6. ENTER (Perform the command for the active option or button)
7. SPACEBAR (Select or clear the check box if the active option is a check box)
8. Arrow keys (Select a button if the active option is a group of option buttons)
9. F1 key (Display Help)
10. F4 key (Display the items in the active list)
11. BACKSPACE (Open a folder one level up if a folder is selected in the Save As or Open dialog box)

Microsoft Natural Keyboard Shortcuts
1. Windows Logo (Display or hide the Start menu)
2. Windows Logo+BREAK (Display the System Properties dialog box)
3. Windows Logo+D (Display the desktop)
4. Windows Logo+M (Minimize all of the windows)
5. Windows Logo+SHIFT+M (Restorethe minimized windows)
6. Windows Logo+E (Open My Computer)
7. Windows Logo+F (Search for a file or a folder)
8. CTRL+Windows Logo+F (Search for computers)
9. Windows Logo+F1 (Display Windows Help)
10. Windows Logo+ L (Lock the keyboard)
11. Windows Logo+R (Open the Run dialog box)
12. Windows Logo+U (Open Utility Manager)
13. Accessibility Keyboard Shortcuts
14. Right SHIFT for eight seconds (Switch FilterKeys either on or off)
15. Left ALT+left SHIFT+PRINT SCREEN (Switch High Contrast either on or off)
16. Left ALT+left SHIFT+NUM LOCK (Switch the MouseKeys either on or off)
17. SHIFT five times (Switch the StickyKeys either on or off)
18. NUM LOCK for five seconds (Switch the ToggleKeys either on or off)
19. Windows Logo +U (Open Utility Manager)
20. Windows Explorer Keyboard Shortcuts
21. END (Display the bottom of the active window)
22. HOME (Display the top of the active window)
23. NUM LOCK+Asterisk sign (*) (Display all of the subfolders that are under the selected folder)
24. NUM LOCK+Plus sign (+) (Display the contents of the selected folder)
25. NUM LOCK+Minus sign (-) (Collapse the selected folder)
26. LEFT ARROW (Collapse the current selection if it is expanded, or select the parent folder)
27. RIGHT ARROW (Display the current selection if it is collapsed, or select the first subfolder)


Shortcut Keys for Character Map
After you double-click a character on the grid of characters, you can move through the grid by using the 
keyboard shortcuts:
1. RIGHT ARROW (Move to the rightor to the beginning of the next line)
2. LEFT ARROW (Move to the left orto the end of the previous line)
3. UP ARROW (Move up one row)
4. DOWN ARROW (Move down one row)
5. PAGE UP (Move up one screen at a time)
6. PAGE DOWN (Move down one screen at a time)
7. HOME (Move to the beginning of the line)
8. END (Move to the end of the line)
9. CTRL+HOME (Move to the first character)
10. CTRL+END (Move to the last character)
11. SPACEBAR (Switch between Enlarged and Normal mode when a character is selected)
Microsoft Management Console (MMC)


Main Window Keyboard Shortcuts
1. CTRL+O (Open a saved console)
2. CTRL+N (Open a new console)
3. CTRL+S (Save the open console)
4. CTRL+M (Add or remove a console item)
5. CTRL+W (Open a new window)
6. F5 key (Update the content of all console windows)
7. ALT+SPACEBAR (Display the MMC window menu)
8. ALT+F4 (Close the console)
9. ALT+A (Display the Action menu)
10. ALT+V (Display the View menu)
11. ALT+F (Display the File menu)
12. ALT+O (Display the Favorites menu)

MMC Console Window Keyboard Shortcuts
1. CTRL+P (Print the current page or active pane)
2. ALT+Minus sign (-) (Display the window menu for the active console window)
3. SHIFT+F10 (Display the Action shortcut menu for the selected item)
4. F1 key (Open the Help topic, if any, for the selected item)
5. F5 key (Update the content of all console windows)
6. CTRL+F10 (Maximize the active console window)
7. CTRL+F5 (Restore the active console window)
8. ALT+ENTER (Display the Properties dialog box, if any, for theselected item)
9. F2 key (Rename the selected item)
10. CTRL+F4 (Close the active console window. When a console has only one console window, this shortcut 
closes the console)


Remote Desktop Connection Navigation
1. CTRL+ALT+END (Open the Microsoft Windows NT Security dialog box)
2. ALT+PAGE UP (Switch between programs from left to right)
3. ALT+PAGE DOWN (Switch between programs from right to left)
4. ALT+INSERT (Cycle through the programs in most recently used order)
5. ALT+HOME (Display the Start menu)
6. CTRL+ALT+BREAK (Switch the client computer between a window and a full screen)
7. ALT+DELETE (Display the Windows menu)
8. CTRL+ALT+Minus sign (-) (Place a snapshot of the active window in the client on the Terminal server 
clipboard and provide the same functionality as pressing PRINT SCREEN on a local computer.)
9. CTRL+ALT+Plus sign (+) (Place asnapshot of the entire client window area on the Terminal server
clipboardand provide the same functionality aspressing ALT+PRINT SCREEN on a local computer)

Microsoft Internet Explorer Keyboard Shortcuts
1. CTRL+B (Open the Organize Favorites dialog box)
2. CTRL+E (Open the Search bar)
3. CTRL+F (Start the Find utility)
4. CTRL+H (Open the History bar)
5. CTRL+I (Open the Favorites bar)
6. CTRL+L (Open the Open dialog box)
7. CTRL+N (Start another instance of the browser with the same Web address)
8. CTRL+O (Open the Open dialog box,the same as CTRL+L)
9. CTRL+P (Open the Print dialog box)
10. CTRL+R (Update the current Web

MOUSE SCANNER

This mouse will not just serve as a scroll and click functionality, it is still able to scan various documents. More precisely, of course, the documents are not in full, and in part because the size of the mouse does not allow this. So if you want to scan a couple of pages, rather than a whole stack of documents, then this mouse is just what we need. As well as the OCR technology to convert scanned text will allow for editorial purposes.
Mouse scanner, of course, not completely replace a large scanner, but will in any case not more than gadget. The mouse is able to scan at a high resolution of 320 dpi.

LunaTik Touch Pen

LunaTik Touch Pen is an innovative, practical, multi functional stylus designed for those people who need to often write on the touchscreen and traditional paper. LunaTik Touch Pen features a patent-pending dual mode tip, at first, it’s a digital stylus compatible with iPads and various tablets. When you press the button on the top end of the digital stylus, the head of the hidden ink cartridge will be out from the hole on the capacitive rubber, so the digital stylus has been turned into a traditional pen for your writing on paper. Unique pen that could double as a pen. Even better, switching between two modes is only just a click away!

List of Command Prompt Commands

:- Accessibility Options : access.cpl
:- Add Hardware: hdwwiz.cpl
:- Add / Remove Programs: appwiz.cpl
:- Administrative Tools : control admintools
:- Automatic Updates: wuaucpl.cpl
:- Wizard file transfer Bluethooth: fsquirt
:- Calculator: calc
:- Certificate Manager: certmgr.msc
:- Character: charmap
:- Checking disk : chkdsk
:- Manager of the album (clipboard) : clipbrd
:- Command Prompt : cmd
:- Service components (DCOM) : dcomcnfg
:- Computer Management : compmgmt.msc
:- DDE active sharing : ddeshare
:- Device Manager : devmgmt.msc
:- DirectX Control Panel (if installed) : directx.cpl
:- DirectX Diagnostic Utility : dxdiag
:- Disk Cleanup : cleanmgr
:- System Information=dxdiag
:- Disk Defragmenter : dfrg.msc
:- Disk Management : diskmgmt.msc
:- Partition manager : diskpart
:- Display Properties : control desktop
:- Properties of the display (2) : desk.cpl
:- Properties display (tab "appearance") : control color
:- Dr. Watson: drwtsn32
:- Manager vérirficateur drivers : check
:- Event Viewer : Eventvwr.msc
:- Verification of signatures of files: sigverif
:- Findfast (if present) : findfast.cpl
:- Folder Options : control folders
:- Fonts (fonts) : control fonts
:- Fonts folder windows : fonts
:- Free Cell ...: freecell
:- Game Controllers : Joy.cpl
:- Group Policy (XP Pro) : gpedit.msc
:- Hearts (card game) : mshearts
:- IExpress (file generator. Cab) : IExpress
:- Indexing Service (if not disabled) : ciadv.msc
:- Internet Properties : inetcpl.cpl
:- IPConfig (display configuration): ipconfig / all
:- IPConfig (displays the contents of the DNS cache): ipconfig / displaydns
:- IPConfig (erases the contents of the DNS cache): ipconfig / flushdns
:- IPConfig (IP configuration cancels maps): ipconfig / release
:- IPConfig (renew IP configuration maps) : ipconfig / renew
:- Java Control Panel (if present) : jpicpl32.cpl
:- Java Control Panel (if present) : javaws
:- Keyboard Properties: control keyboard
:- Local Security Settings : secpol.msc
:- Local Users and Groups: lusrmgr.msc
:- Logout: logoff
:- Microsoft Chat : winchat
:- Minesweeper (game): winmine
:- Properties of the mouse: control mouse
:- Properties of the mouse (2): main.cpl
:- Network Connections : control NetConnect
:- Network Connections (2): ncpa.cpl
:- Network configuration wizard: netsetup.cpl
:- Notepad : notepad
:- NView Desktop Manager (if installed): nvtuicpl.cpl
:- Manager links: packager
:- Data Source Administrator ODBC: odbccp32.cpl
:- Screen Keyboard: OSK
:- AC3 Filter (if installed) : ac3filter.cpl
:- Password manager (if present): Password.cpl
:- Monitor performance : perfmon.msc
:- Monitor performance (2): perfmon
:- Dialing Properties (phone): telephon.cpl
:- Power Options : powercfg.cpl
:- Printers and Faxes : control printers
:- Private Character Editor : eudcedit
:- Quicktime (if installed) : QuickTime.cpl
:- Regional and Language Options: intl.cpl
:- Editor of the registry : regedit
:- Remote desktop connection : mstsc
:- Removable Storage: ntmsmgr.msc
:- requests the operator to removable storage: ntmsoprq.msc
:- RSoP (traduction. ..) (XP Pro): rsop.msc
:- Scanners and Cameras : sticpl.cpl
:- Scheduled Tasks : control schedtasks
:- Security Center : wscui.cpl
:- Console management services: services.msc
:- shared folders : fsmgmt.msc
:- Turn off windows : shutdown
:- Sounds and Audio Devices : mmsys.cpl
:- Spider (card game): spider
:- Client Network Utility SQL server : cliconfg
:- System Configuration Editor : sysedit
:- System Configuration Utility : msconfig
:- System File Checker (SFC =) (Scan Now) : sfc / scannow
:- SFC (Scan next startup): sfc / scanonce
:- SFC (Scan each démarraget) : sfc / scanboot
:- SFC (back to default settings): sfc / revert
:- SFC (purge cache files): sfc / purgecache
:- SFC (define size CAHC x) : sfc / cachesize = x
:- System Properties : sysdm.cpl
:- Task Manager : taskmgr
:- Telnet client : telnet
:- User Accounts : nusrmgr.cpl
:- Utility Manager (Magnifier, etc) : utilman
:- Windows firewall (XP SP2) : firewall.cpl
:- Microsoft Magnifier: magnify
:- Windows Management Infrastructure: wmimgmt.msc
:- Protection of the accounts database: syskey
:- vWindows update: wupdmgr
:- Introducing Windows XP (if not erased) : tourstart
:- Wordpad : write
:- Date and Time Properties : timedate.cpl

INTERNET ERROR CODES

Error 400 - Bad request.
Error 401 - unauthorized
request.
Error 403 - forbidden.
Error 404 - Not found.
Error 500 -Internal error.
Error 501 - Not Implemented
Error 502 - Bad Gateway
Error 503 -Service unavailable.
Error 504 - Gateway Time-Out
Error 505 - HTTP Version not
supported/DNS Look up Fail/
unknown host
Error 500-599 - Server Errors.

Top 25 Persons Who Changed Internet Forever

1• Sir Tim Berners Lee – World Wide Web
2• Vint Cerf And Bob Kahn –TCP/IP
3• Larry Page and Sergey Brin – Google Inc.
4• David Filo and Jerry Yang – Yahoo! Inc.
5• Bill Gates – Microsoft
6• Steven Paul Jobs – Apple Inc.
7• Mark Zuckerberg – Facebook
8• Chad Hurley and Steve Chen – YouTube
9• Linus Torvalds – Linux
10• Jack Dorsey – Twitter
11• Kevin Rose – Digg
12• Bram Cohen – Bit Torrent
13• Mike Morhaime – Blizzard Entertainment
14• Jimmy Wales – Wikipedia
15• Jeff Preston Bezos – Amazon
16• Shawn Fanning – Napster, Rupture
17• Pierre Omidyar – eBay
18• Jack Ma – Alibaba
19• Craig Newmark – Craigslist
20• Matt Mullenweg – WordPress
21• Thomas Anderson – MySpace
22• Garrett Camp – Stumble Upon
23• Jon Postel – Internet Pioneer
24• Caterina Fake – Flickr
25• Marc Andreessen – Netscape

Keyboard Shortcuts For Ubuntu

General keyboard shortcuts

Ctrl + A = Select all
Ctrl + C = Copy the highlighted content to clipboard
Ctrl + V = Paste the clipboard content
Ctrl + N = New (Create a new document, not in terminal)
Ctrl + O = Open a document
Ctrl + S = Save the current document
Ctrl + P = Print the current document
Ctrl + W = Close the close document
Ctrl + Q = Quit the current application

Keyboard shortcuts for GNOME desktop

Ctrl + Alt + F1 = Switch to the first virtual terminal
Ctrl + Alt + F2(F3)(F4)(F5)(F6) = Select the different virtual terminals
Ctrl + Alt + F7 = Restore back to the current terminal session with X
Ctrl + Alt + Backspace = Restart GNOME
Alt + Tab = Switch between open programs
Ctrl + Alt + L = Lock the screen.
Alt + F1 = opens the Applications menu
Alt + F2 = opens the Run Application dialog box.
Alt + F3 = opens the Desk bar Applet
Alt + F4 = closes the current window.
Alt + F5 = unmaximizes the current window
Alt + F7 = move the current window
Alt + F8 = re sizes the current window.
Alt + F9 = minimizes the current window.
Alt + F10 = maximizes the current window
Alt + Space = opens the window menu.
Ctrl + Alt + + = Switch to next X resolution
Ctrl + Alt + - = Switch to previous X resolution
Ctrl + Alt + Left/Right = move to the next/previous workspace

Keyboard shortcuts for Terminal

Ctrl + A = Move cursor to beginning of line
Ctrl + E = Move cursor to end of line
Ctrl + C = kills the current process.
Ctrl + Z = sends the current process to the background.
Ctrl + D = logs you out.
Ctrl + R = finds the last command matching the entered letters.
Enter a letter, followed by Tab + Tab = lists the available commands beginning with those letters.
Ctrl + U = deletes the current line.
Ctrl + K = deletes the command from the cursor right.
Ctrl + W = deletes the word before the cursor.
Ctrl + L = clears the terminal output
Shift + Ctrl + C = copy the highlighted command to the clipboard.
Shift + Ctrl + V (or Shift + Insert) = pastes the contents of the clipboard.
Alt + F = moves forward one word.
Alt + B = moves backward one word
Arrow Up/Down = browse command history
Shift + Page Up / Page Down = Scroll terminal output

LIST OF DATA UNITS

Bit = 1 Binary Digit
Byte = 8 Bit
Kilobyte = 1024 Byte
Megabyte = 1024 Kilobyte
Gigabyte = 1024 Megabyte
Terabyte = 1024 Gigabyte
Petabyte = 1024 Terabyte
Exabyte = 1024 Petabyte
Zettabyte = 1024 Exabyte
Yottabyte = 1024 Zettabyte
Brontobyte = 1024 Yottabyte
Geopbyte = 1024 Brontobyte
Saganbyte = 1024 Geopbyte
Alphabyte = 1024 Saganbyte
Kryatbyte = 1024 Alphabyte
Amosbyte = 1024 Kryatbyte
Pectrolbyte = 1024 Kryatbyt
Bolgerbyte = 1024 Pectrolbyte
Sambobyte = 1024 Bolgerbyte
Quesabyte = 1024 Sambobyte
Kinsabyte = 1024 Quesabyte
Rutherbyte = 1024 Kinsabyte
Dubnibyte = 1024 Rutherbyte
Seaborgbyte = 1024 Dubnibyte
Bohrbyte = 1024 Seaborgbyte
Hassiubyte = 1024 Bohrbyte
Meitnerbyte = 1024 Hassiubyte
Darmstadbyte = 1024 Meitnerbyte
Roentbyte = 1024 Darmstadbyte
Coperbyte = 1024 Roentbyte

WHAT'S THE DIFFERENCE BETWEEN CORE I3, CORE I5, CORE I7

Core i3
* Entry level processor.
* 2-4 Cores
* 4 Threads
* Hyper-Threading (efficient use of
   processor resources)
* 3-4 MB Cache
* 32 nm Silicon (less heat and energy)

Core i5
* Mid range processor.
* 2-4 Cores
* 4 Threads
* Turbo Mode (turn off core if not used)
* Hyper-Threading (efficient use of
   processor resources)
* 3-8 MB Cache
* 32-45 nm Silicon (less heat and energy)
   Intel core i7 300x176 Difference Between
   Core i3, Core i5, Core i7

Core i7
* High end processor.
* 4 Cores
* 8 Threads
* Turbo Mode (turn off core if not used)
* Hyper-Threading (efficient use of
   processor resources)
* 4-8 MB Cache
* 32-45 nm Silicon (less heat and energy)