Innovator of IT

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 – BitTorrent
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 – StumbleUpon
23. Jon Postel – Internet Pioneer
24. Caterina Fake – Flickr
25. Marc Andreessen – Netscape

ASCII Code

ASCII is a character code electric transmission. ASCII stands for American Standard Code for Information Interchange. American National Standards Institute (ANSI) developed this code. The first edition of the code was published in 1963.

Previously character was represented in different ways and it created problem to networking with other computer. Bob Bemer, an IBM engineer proposed ANSI to develop a single code for computer communication.

ASCII uses 7 bit for character code, that means 7 bit to represent each character. So, in total, 128 character can be represented by ASCII code.

The first 32 characters are control character. Decimal Range (0-31). These are unprintable.

The rest characters are printable characters. Decimal Range (32-127).

If Gmail Is Hacked

You have your gmail account. You are trying to login and see the password is wrong ! Timid and disgusted, you quickly click "Can't access your account?" button, trying to reset password by your alternate email address. But no, hacker has already changed your alternate email address, your phone number, address, security question, everything ! What to do?

Don't worry.Only way to get back it, is to contact Google support center. Go to link below:

https://www.google.com/accounts/recovery

You will see a text, "having trouble signing in?". Select your field and submit to continue. Google will scrutinized your account info again, if everything is perfect then you will get back your account. It may take some days.

Proportion

We know that ratio is comparison of two numbers and if two ratios are equal then it is called Proportion. So, Proportion says that two ratios are equal.
Though ratio and proportion are different terms for the same mathematical concept but they are often used together as a phrase, "ratio and proportion". 8/10 = 12/15
Here, the common ratio is 4/5.
Do the ratios 18/9 and 2/1 form a proportion? (Answer it by yourself)

#Take another example of word problem so that you can understand it more.
Rob can eat 10 cakes in 60 minutes. In this way, how much time will it take to eat 35 cakes?
Let's think, it will take M minutes. Then
10/60=35/M
10M= 60 × 35
10M=2100
M= 2100/10

M=210

So, it will take 210 minutes to eat all the 35 cakes.

#You are making lemonade. The amount of sugar you need depends on the amount of lemonade mix you use. Is the amount of sugar you need proportional to the amount of lemonade mix you use?

Cups of sugar	1/3	1	3
Packets of lemonade mix	1	3	9

For each column in the table, let's write the ratio (in simplest form) of cups of sugar to packets of lemonade mix.
1/(1/3) =3 3/1=3 9/3=3
So, the answer is yes.

Ratios

We often compare two things and this comparison is called 'Ratio' in mathematics. A ratio compares two different quantities. So, it also a relation between two quantities. 

For example, there are 10 instructors and 30 girls in a hall room. So the ration between instructor and girl is 10 to 30 and in simplification it is 1 to 3 which means for every 3 girls there is one instructor.

Here are a few different ways we can describe the ratio of instructors to girls:

• There is 1 instructor for every 3 girls.
• The ratio of instructor to girls 1 to 3.
• The ratio of instructor to girls 1/3
• The ratio of instructor to girls 1:3

Ways to write ratios:

Here are several ways to describe the same ratio:

-  6 to 11

-  6:11

-  6/11

Fraction

A fraction is part of a whole. If we divide a whole thing, it will be divided into several pieces. Each piece can be seen as fractional part of the original whole thing.

In the above picture a circle is cut into 2 pieces and another circle is cut into 8 pieces. Each part can be said as fraction of the original circle and it can be represented as 1/2 and 1/8. Here 1 is called numerator and 2 and 8 is called denominator.

The numerator represents a number of equal parts while the denominator indicates how many of those parts make up a unit or a whole. For example, in the fraction 4/8, the numerator, 4, tells us that the fraction represents 4 equal parts, and the denominator, 8, tells us that 8 parts make up a whole. The denominator cannot be zero here. So, relation between can represented as :

Numerator

-------------------

Denominator

Proper Fraction and Improper Fraction:

A proper fraction is a fraction where the numerator is smaller than denominator.

Below are examples of improper fractions:
2/4, 3/5, 3/7

An improper fraction is a fraction where the numerator is greater than or equal to the denominator. Below are examples of improper fractions:
9/4, 5/5, 7/3

Mixed number:
A mixed number sometimes also called mixed fraction has a whole number and proper fraction. It is actually sum of a  whole number(not zero) and a proper fraction. This sum (+) symbol is never expressed.
3 4⁄5
It is actually  3 + 4⁄5 and is equivalent to 19/5.