Run Android Apps on your Windows 7 PC

A company named BlueStacks has created a program that emulates the Android OS letting users and developers run Android Apps, smoothly on their Windows PC. Of course you would greatly up your user experience if you are on a computer with touchscreen display. Nevertheless it’s a cool new way to integrate your different OS’s and gadgets.
At preset BlueStacks offer 10 Android Apps pre-installed and a direct link to their own “app Store”. The application is said to ” integrate seamlessly with Citrix and Microsoft software delivery infrastructure and with Citrix’s Enterprise App Store”. BlueStacks currently offer a free version only, but a PRO version is imminent, offering more usability than just fun and games.
The only downside I have seen thus far is that you need to have a Facebook account to log into their app-store.

 Check it out here!

Download BlueStacks

Windows Xp Registry tricks

Its a mixed bag.. a compilation of all the tricks..
many tricks are what i discovered..
many are shared ..
keep posting if u know more



Display Your Quick Launch ToolbarTip:

Is your Quick Launch toolbar missing from the taskbar?
To display your familiar Quick Launch toolbar:
Right-click an empty area on the taskbar, click Toolbars, and then click Quick Launch. 

Easy as that your Quick Launch bar appears. To add items to your Quick Launch toolbar, click the icon for the program you want to add, and drag it to the Quick Launch portion of the taskbar. 

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How to remove recycle bin from your desktop Tip:

Open Regedit by going to START - RUN and type Regedit and hit enter. Then you should navigate to following entry in registry HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\
Desktop\NameSpace\{645FF040-5081-101B-9F08-00AA002F954E} and delete it. This action should remove recycle bin from your desktop.

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How to stop new programs installed balloon from coming up tip:

Right click on START button and select properties. Click on Customize and go to Advanced tab and deselect check box saying "Highlight newly installed programs". This would help you stop this annoying feature from popping up every now and then.



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Unlock Toolbars to Customize Them Tip:

The new Windows XP now features locking toolbars, and you can adjust them. You may customize a lot of the Windows XP features such as the Taskbar, Start Menu, and even toolbar icons in Internet Explorer and Outlook Express. Remember your right-click:
* Right-click on a toolbar, and then click Lock the Toolbars to remove the check mark.
* Right-click on the toolbar again, and then click Customize.

You may add or remove toolbar buttons, change text options and icon options. When you've got the toolbar customized, click Close. Now right-click on the toolbar and then click Lock the Toolbars to lock them in place. com


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Want to remove shared documents folder from My Computer window tip:

Some don't like my shared documents folder option. If you are one of that, here is a trick to remove it.Open registry editor by going to START-RUN and entering regedit.
Once in registry, navigate to key HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows \ CurrentVersion \ Explorer \ My Computer \ NameSpace \ DelegateFolders You must see a sub-key named {59031a47-3f72-44a7-89c5-5595fe6b30ee}. If you delete this key, you have effectively removed the my shared documents folder.

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How to improve on shutdown time ? Close apps automatically & quickly at shutdown tip:

Open Registry by going to START-RUN and typing REGEDIT. Navigate to HKEY_CURRENT_USER\CONTROL PANEL\DESKTOP and look for AutoEndTasks. On my computer default value is 0. Change it to 1. Thats all. Further more you can reduce the time it takes for Windows to issue kill directive to all active/hung applications.
In doing this only constraint that you should make sure exists is that HungAppTimeout is greater than WaitToKillAppTimeout. Change the values of WaitToKillAppTimeout to say 3500 (since default value for HungAppTimeout 5000 and for WaitToKillAppTimeout is 20000)


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Are you missing icons Tip:


Are you missing icons? You may be wondering where all the icons from your desktop are in Windows XP? Well if you're like me, you like to have at least My Computer, My Network Places, and My Documents on the your desktop.
You need to:
* Right-click on the desktop, and then click Properties.
* Click the Desktop tab and then click on Customize Desktop.
* Put a check mark in the box next to My Document, My Computer, My Network Places, or Internet Explorer, to add those familiar icons to your desktop. Easy yes!

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How to login as administrator if you don't see it available tip:

Unless and until you have run into issues and fixing XP (underwhich case you have to go to Safe Mode to login as Administrator), you can get to administrator screen by simply pressing CTRL+ALT+DELETE twice at the main screen.

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Speedup boot up sequence by defragmenting all key boot files tip:

Open Registry by going to START-RUN and typing REGEDIT. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Dfrg\BootOptimizeFunction. In right hand panel look for Enable. Right click on it and set it 'Y' for enable. This is the way I have it set on my computer. This will help speedup boot time.


Use a Shortcut to Local Area Network Connection Information:


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Use a Shortcut to Local Area Network Connection Information Tip:


Here's something new in Windows XP, instead of using the command line program and typing ipconfig to get local area network information, you can try using the following shortcut:
* Click on Start, point to Connect to, and then click Show All Connections.
* Right–click the connection you want information about, and then click Status.
* In the connection Properties dialog box, click the Support tab.
* For more information, click on the Advanced tab.

To automatically enable the status monitor each time the connection is active, in the connection Properties dialog box, select the Show icon in taskbar notification area when connected check box.

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Do you know you can have Virtual Desktops (like in Linux) with PowerToys ?

If you have powertoys installed on Windows XP Its available for free at Microsoft download webpage. It is very easy to enable Microsoft Virtual Desktop Feature. Simply right click on the Start Panel Bar also called TaskBar, Click on Tool Bar and select Desktop manager.
You would see a set of 5 icons placed on the right portion of the TAskBar. Click on number 1 to 4 to go to any of the desktops. Now you have have four different Active Desktops.
IMPORTANT NOTE: You may see a little degradation in performance.

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Customize Internet. Explorer Title bar tip:

This tip won't make your computer any faster but may help personalize your computer experience. Open Registry by going to START-RUN and typing REGEDIT. Navigate to HKEY_CURRENT_USER\Software\Microsoft\Internet. Explorer\Main. In right hand panel look for string "Window Title" and change its value to whatever custom text you want to see.

Interesting Tech FACTS

heloo..these are very awesome tech facts...very interesting to know...
MERCEDES
This was actually the financier's daughter's name.

ADOBE
This came from name of the river Adobe Creek that ran behind the house of founder John Warnock.

APPLE COMPUTERS

It was the favorite fruit of founder Steve Jobs. He was three months late in filing a name for the business, and he threatened to call his company Apple Computers if
the other colleagues didn't suggest a better name by 5 O'clock that evening.


CISCO
It is not an acronym as popularly believed.
It is short for San Francisco.

COMPAQ
This name was formed by using COMp, for computer, and PAQ to denote a small integral object.

COREL
The name was derived from the founder's name Dr. Michael Cowpland. It stands for COwpland REsearchLaboratory.


GOOGLE
The name started as a joke boasting about the amount of information the search-engine would be able to search. It was originally named 'Googol', a word for the number represented by 1 followed by 100 zeros. After founders- Stanford graduate students Sergey Brin and Larry Page presented their project to an angel investor, they received a cheque made out to 'Google' ...thus the name.

HOTMAIL
Founder Jack Smith got the idea of accessing e-mail via the web from a computer anywhere in the world. When Sabeer Bhatia came up with the business plan for the mail service, he tried all kinds of names ending in 'mail' and finally settled for hotmail as it included the letters "html" - the programming language used to write web pages. It was initially referred to as HoTMaiL with selective uppercasing.

HEWLETT PACKARD
Bill Hewlett and Dave Packard tossed a coin to decide whether the company they founded would be called Hewlett-Packard or Packard-Hewlett.

INTEL
Bob Noyce and Gordon Moore wanted to name their new company 'Moore Noyce'but that was already trademarked by a hotel chain so they had to settle for an acronym of INTegrated ELectronics.

LOTUS (Notes)
Mitch Kapoor got the name for his company from 'The Lotus Position' or 'Padmasana'. Kapoor used to be a teacher of Transcendental Meditation of Maharishi Mahesh Yogi.


MICROSOFT
Coined by Bill Gates to represent the company that was devoted to MICROcomputer SOFTware. Originally christened Micro-Soft, the '-' was removed later on.

MOTOROLA
Founder Paul Galvin came up with this name when his company started manufacturing radios for cars. The popular radio company at the time was called Victrola.

ORACLE
Larry Ellison and Bob Oats were working on a consulting project for the CIA (Central Intelligence Agency). The code name for the project was called
Oracle (the CIA saw this as the system to give answers to all questions or something such). The project was designed to help use the newly written SQL code by IBM. The project eventually was terminated but Larry and Bob decided to finish what they started and bring it to the world. They kept the name Oracle and created the RDBMS engine. Later they kept the same name for the company.

SONY
It originated from the Latin word 'sonus' meaning sound, and 'sonny' a slang used by Americans to refer to a bright youngster.

SUN
Founded by four Stanford University buddies, SUN is the acronym for Stanford University Network. Andreas Bechtolsheim built a microcomputer; Vinod Khosla recruited him and Scott McNealy to manufacture computers based on it, and Bill Joy to develop a UNIX-based OS for the computer.

YAHOO!
The word was invented by Jonathan Swift and used in his book 'Gulliver's Travels'. It represents a person who is repulsive in appearance and action and is barely human. Yahoo! Founders Jerry Yang and David Filo selected the name because they considered themselves yahoos!
think...u njoyed knowing them....do share on u r wall...lets spread them...keep on visiting

Handy formulae for APTITUDE

114 Handy Formulae for Quantitative Aptitude Problems

Contents

ℵ Numbers
ℵ H.C.F & L.C.M of Numbers
ℵ Surds & Indices
ℵ Percentage
ℵ Profit & Loss
ℵ Ratio & Proportion
ℵ Partnership
ℵ Chain Rule
ℵ Time & Work
ℵ Pipes & Cisterns
ℵ Time And Distance
ℵ Trains
ℵ Boats & Streams
ℵ Alligation or Mixture
ℵ Simple Interest
ℵ Compound Interest
ℵ Logarithms
ℵ Area
ℵ Volume & Surface Area
ℵ Stocks & Shares
ℵ True Discount
ℵ Banker’s Discount
ℵ Copyright Notice

Numbers

1. A number is divisible by 2, if its unit’s place digit is 0, 2, 4, or 8
2. A number is divisible by 3, if the sum of its digits is divisible by 3
3. A number is divisible by 4, if the number formed by its last two digits is divisible by 4
4. A number is divisible by 8, if the number formed by its last three digits is divisible by 8
5. A number is divisible by 9, if the sum of its digits is divisible by 9
6. A number is divisible by 11, if, starting from the RHS,
(Sum of its digits at the odd place) – (Sum of its digits at even place) is equal to 0 or 11x
7. (a + b)2 = a2 + 2ab + b2
8. (a - b)2 = a2 - 2ab + b2
9. (a + b)2 - (a - b)2 = 4ab
10. (a + b)2 + (a - b)2 = 2(a2 + b2)
11. (a2 – b2) = (a + b)(a - b)
12. (a3 + b3) = (a + b)(a2 - ab + b2)
13. (a3 – b3) = (a - b)(a2 + ab + b2)
14. Results on Division:
Dividend = Quotient × Divisor + Remainder
15. An Arithmetic Progression (A. P.) with first term ‘a’ and Common Difference ‘d’ is given
by:
[a], [(a + d)], [(a + 2d)], … … …, [a + (n - 1)d]
nth term, Tn = a + (n - 1)d
Sum of first ‘n’ terms, Sn
= n/2 (First Term + Last Term)
16. A Geometric Progression (G. P.) with first term ‘a’ and Common Ratio ‘r’ is given by:
a, ar, ar2, ar3, … … …, arn-1
nth term, Tn = arn-1
Sum of first ‘n’ terms Sn = [a(1 - rn)] / [1 - r]
17. (1 + 2 + 3 + … … … + n) = [n(n + 1)] / 2
18. (12 + 22 + 32 + … … … + n2) = [n(n + 1)(2n + 1)] / 6
19. (13 + 23 + 33 + … … … + n3) = [n2(n + 1)2] / 4

H.C.F & L.C.M of Numbers

20. Product of two numbers = Their H. C. F. × Their L. C. M.

Surds & Indices

21. am × an = a(m + n)
22. am / an = a(m - n)
23. (ab)m = ambm
24. (a / b)m = an / bn
25. a0 = 1
26. = a1/n
27. = (a1/n)n
= a
28. =
29. = /
30. ( )m =
31. =

Percentage

32. To express x% as a fraction, we have x% = x / 100
33. To express a / b as a percent, we have a / b = (a / b × 100) %
34. If ‘A’ is R% more than ‘B’, then ‘B’ is less than ‘A’ by
OR
If the price of a commodity increases by R%, then the reduction in consumption, not
to increase the expenditure is
{100R / [100 + R] } %
35. If ‘A’ is R% less than ‘B’, then ‘B’ is more than ‘A’ by
OR
If the price of a commodity decreases by R%, then the increase in consumption, not to
increase the expenditure is
{100R / [100 - R] } %
36. If the population of a town is ‘P’ in a year, then its population after ‘N’ years is
P (1 + R/100)N
37. If the population of a town is ‘P’ in a year, then its population ‘N’ years ago is
P / [(1 + R/100)N]

Profit & Loss

38. If the value of a machine is ‘P’ in a year, then its value after ‘N’ years at a depreciation of
‘R’ p.c.p.a is
P (1 - R/100)N
39. If the value of a machine is ‘P’ in a year, then its value ‘N’ years ago at a depreciation of
‘R’ p.c.p.a is
P / [(1 - R/100)N]
40. Selling Price = [(100 + Gain%) × Cost Price] / 100
= [(100 - Loss%) × Cost Price] / 100

Ratio & Proportion

41. The equality of two ratios is called a proportion. If a : b = c : d, we write a : b :: c : d and
we say that a, b, c, d are in proportion.
In a proportion, the first and fourth terms are known as extremes, while the second and
third are known as means.
42. Product of extremes = Product of means
43. Mean proportion between a and b is
44. The compounded ratio of the ratios (a : b), (c : d), (e : f) is (ace : bdf)
45. a2 : b2 is a duplicate ratio of a : b
46. : is a sub-duplicate ration of a : b
47. a3 : b3 is a triplicate ratio of a : b
48. a1/3 : b1/3 is a sub-triplicate ratio of a : b
49. If a / b = c / d, then, (a + b) / b = (c + d) / d, which is called the componendo.
50. If a / b = c / d, then, (a - b) / b = (c - d) / d, which is called the dividendo.
51. If a / b = c / d, then, (a + b) / (a - b) = (c + d) / (c - d), which is called the componendo &
dividendo.
52. Variation: We say that x is directly proportional to y if x = ky for some constant k and we
write, x α y.
53. Also, we say that x is inversely proportional to y if x = k / y for some constant k and we
write x α 1 / y.

Partnership

54. If a number of partners have invested in a business and it has a profit, then
Share Of Partner = (Total_Profit × Part_Share / Total_Share)
Chain Rule
55. The cost of articles is directly proportional to the number of articles.
56. The work done is directly proportional to the number of men working at it.
57. The time (number of days) required to complete a job is inversely proportional to the
number of hours per day allocated to the job.
58. Time taken to cover a distance is inversely proportional to the speed of the car.
Time & Work
59. If A can do a piece of work in n days, then A’s 1 day’s work = 1/n.
60. If A’s 1 day’s work = 1/n, then A can finish the work in n days.
61. If A is thrice as good a workman as B, then:
Ratio of work done by A and B = 3 : 1,
Ratio of times taken by A & B to finish a work = 1 : 3
Pipes & Cisterns
62. If a pipe can fill a tank in ‘x’ hours and another pipe can empty the full tank in ‘y’ hours
(where y > x), then on opening both the pipes, the net part of the tank filled in 1 hour is
(1/x – 1/y)
Time And Distance
63. Suppose a man covers a distance at ‘x’ kmph and an equal distance at ‘y’ kmph, then
average speed during his whole journey is
[2xy / (x + y)] kmph
Trains
64. Lengths of trains are ‘x’ km and ‘y’ km, moving at ‘u’ kmph and ‘v’ kmph (where, u > v) in
the same direction, then the time taken y the over-taker train to cross the slower train is
[(x + y) / (u - v)] hrs
65. Time taken to cross each other is
[(x + y) / (u + v)] hrs
66. If two trains start at the same time from two points A and B towards each other and after
crossing they take a and b hours in reaching B and A respectively.
Then, A’s speed : B’s speed = ( : ).
67. x kmph = (x × 5/18) m/sec.
68. y metres/sec = (y × 18/5) km/hr.

Boats & Streams

69. If the speed of a boat in still water is u km/hr and the speed of the stream is v hm/hr,
then:
Speed downstream = (u + v) km/hr.
Speed upstream = (u - v) km/hr.
70. If the speed downstream is a km/hr and the speed upstream is b km/hr, then:
Speed in still water = ½ (a + b) km/hr.
Rate of stream = ½ (a - b) km/hr.

Alligation or Mixture

71. Alligation: It is the rule that enables us to find the ratio in which two or more ingredients at
the given price must be mixed to produce a mixture at a given price.
72. Mean Price: The cost price of a quantity of the mixture is called the mean price.
73. Rule of Alligation: If two ingredients are mixed, then:
74. We represent the above formula as under:
75. .: (Cheaper quantity) : (Dearer quantity) = (d - m) : (m - c)
Simple Interest
76. Let Principle = P, Rate = R% per annum and Time = T years. Then,
a. S.I. = ( P × R × T ) / 100
b. P = ( 100 × S.I. ) / ( R × T ),
c. R = ( 100 × S.I. ) / ( P × T ),
d. T = ( 100 × S.I. ) / ( P × R ).

Compound Interest

77. Let Principle = P, Rate = R% per annum and Time = T years. Then,
I. When interest is compounded Annually,
Amount = P (1 + R/100)N
II. When interest is compounded Half-yearly:
Amount = P (1 + R/2/100)2N
III. When interest is compounded Quarterly:
Amount = P (1 + R/4/100)4N
78. When interest is compounded Annually, but the time is in fraction, say 3⅞ years.
Then, Amount = P (1 + R/100)3 × (1 + ⅞R/100)
79. When Rates are different for different years, say R1%, R2%, R3% for 1st, 2nd, and 3rd year
respectively,
Then, Amount = P (1 + R1/100) (1 + R2/100) (1 + R3/100)
80. Present worth of Rs. x due n years hence is given by:
Present Worth = x / (1 + R/100)n

Logarithms

81. Logarithm: If a is a positive real number, other than 1 and am = x, then we write m = loga x
and say that the value of log x to the base a is m.
82. Properties of Logarithms:
a. loga (xy) = loga x + loga y
b. loga (x/y) = loga x - loga y
c. logx x = 1 (i.e. Log of any number to its own base is 1)
d. loga 1 = 0 (i.e. Log of 1 to any base is 0)
e. loga (xp) = p loga x
f. loga x = 1 / logx a
g. loga x = logb x / logb a
= log x / log a (Change of base rule)
h. When base is not mentioned, it is taken as 10
i. Logarithms to the base 10 are known as common logarithms
j. The logarithm of a number contains two parts, namely characteristic and
mantissa. The integral part is known as characteristic and the decimal part is
known as mantissa.
I. Case 1: When the number is greater than 1.
In this case, the characteristic is one less than the number of digits
in the left of decimal point in the given number.
II. Case 2: When the number is less than 1.
In this case, the characteristic is one more than the number of
zeroes between the decimal point and the first significant digit of
the number and it is negative.
e.g.
Number Characteristic
234.56 2
23.456 1
2.34 0
0.234 -1
0.0234 -2
0.00234 -3
III. For mantissa, we look through the log table.
IV. Antilog: If log x = y, then antilog y = x.

Area

83. Rectangle:
a. Area of a rectangle = (length × breadth)
b. Perimeter of a rectangle = 2 (length + breadth)
84. Square:
a. Area of square = (side)2
b. Area of a square = ½ (diagonal)2
85. Area of 4 walls of a room
= 2 (length + breadth) × height
86. Triangle:
a. Area of a triangle = ½ × base × height
b. Area of a triangle = , where
s = ½ (a + b + c), and a, b, c are the sides of the triangle
c. Area of an equilateral triangle = / 4 × (side)2
d. Radius of incircle of an equilateral triangle of side a = a / 2
e. Radius of circumcircle of an equilateral triangle of side a = a /
87. Parallelogram/Rhombus/Trapezium:
a. Area of a parallelogram = Base × Height
b. Area of a rhombus = ½ × (Product of diagonals)
c. The halves of diagonals and a side of a rhombus form a right angled triangle with
side as the hypotenuse.
d. Area of trapezium = ½ × (sum of parallel sides) × (distance between them)
88. Circle/Arc/Sector, where R is the radius of the circle:
a. Area of a circle = πR2
b. Circumference of a circle = 2πR
c. Length of an arc = Ө/360 × 2πR
d. Area of a sector = ½ (arc × R)
= Ө/360 × πR2

Volume & Surface Area

89. Cuboid:
Let length = l, breadth = b & height = h units Then,
a. Volume = (l × b × h) cu units
b. Surface Area = 2 (lb + bh + hl) sq. units
c. Diagonal = units
90. Cube:
Let each edge of a cube be of length a. Then,
a. Volume = a3 cu units
b. Surface Area = 6a2 sq. units
c. Diagonal = ( × a) units
91. Cylinder:
Let radius of base = r & height (or length) = h. Then,
a. Volume = (πr2h) cu. units
b. Curved Surface Area = (2πrh) sq. units
c. Total Surface Area = 2πr(r + h) sq. units
92. Cone:
Let radius of base = r & height = h. Then,
a. Slant height, l = units
b. Volume = (⅓ πr2h) cu. units
c. Curved Surface Area = (πrl) sq. units
d. Total Surface Area = πr(r + l) sq. units
93. Sphere:
Let the radius of the sphere be r. Then,
a. Volume = (4/3 πr3) cu. units
b. Surface Area = (4πr2) sq. units
94. Hemi-sphere:
Let the radius of the sphere be r. Then,
a. Volume = (2/3 πr3) cu. units
b. Curved Surface Area = (2πr2) sq. units
c. Total Surface Area = (3πr2) sq. units

Stocks & Share

95. Brokerage: The broker’s charge is called brokerage.

96. When stock is purchased, brokerage is added to the cost price.
97. When the stock is sold, brokerage is subtracted from the selling price.
98. The selling price of a Rs. 100 stock is said to be:
a. at par, if S.P. is Rs. 100 exactly;
b. above par (or at premium), if S.P. is more than Rs. 100;
c. below par (or at discount), if S.P. is less than Rs. 100.
99. By ‘a Rs. 800, 9% stock at 95’, we mean a stock whose face value is Rs. 800, annual
interest is 9% of the face value and the market price of a Rs. 100 stock is Rs. 95.
True Discount
100. Suppose a man has to pay Rs. 156 after 4 years and the rate of interest is 14% per
annum. Clearly, Rs. 100 at 14% will amount to Rs. 156 in 4 years. So, the payment of
Rs. 100 now will clear off the debt of Rs. 156 due 4 years hence. We say that:
Sum due = Rs. 156 due 4 years hence;
Present Worth (P.W.) = Rs. 100;

True Discount (T.D.) = Rs. (156 - 100)

= (Sum due) – (P.W.)
101. T.D. = Interest on P.W.
102. Amount = (P.W.) + (T.D.)
103. Interest is reckoned on R.W. and true discount is reckoned on the amount
104. Let rate = R% per annum & time = T years. Then,
a. P.W. = (100 × Amount) / (100 + [R × T])
= (100 × T.D.) / (R × T)
b. T.D. = (P.W.) × R × T / 100
= ([Amount] × R × T) / (100 + [R × T])
c. Sum = ([S.I.] × [T.D.]) / ([S.I.] – [T.D.])
d. (S.I.) – (T.D.) = S.I. on T.D.
e. When the sum is put at compound interest, then
P.W. = Amount / (1 + R/100)T

Banker’s Discount

105. Banker’s Discount (B.D.) is the S.I. on the face value for the period from the date on
which the bill was discounted and the legally due date.
106. Banker’s Gain (B.G.) = (B.D.) – (T.D.) for the unexpired time
107. When the date of the bill is not given, grace days are not to be added
108. B.D. = S.I. on bill for unexpired time
109. B.G. = (B.D.) – (T.D.)
= S.I. on T.D.
= (T.D.)2 / P.W.
110. T.D. =
111. B.D. = (Amount × Rate × Time) / 100
112. T.D. = (Amount × Rate × Time) / (100 + [Rate × Time])
113. Amount = (B.D. × T.D.) / (B.D. – T.D.)
114. T.D. = (B.G. × 100) / (Rate × Time)