How to Connect PC or Laptop to Internet Using Android Phone

The Android operating system supports usage of Android phones as an Internet modem for Personal computer or laptops. This facility of sharing the Internet connection of Android phone with a laptop or PC through a USB cable is called USB tethering. It supports most of major operating systems.

In Linux:

In Linux you just have to enable 'packet data' in phone first, connect phone with PC or laptop through USB data cable and check the option 'USB tethering' in Settings. It is somewhere within USB settings or Wifi and network settings. The place of this option may vary from phone to phone.In my phone (Ssmsung Galaxy S Advance, GT-I9070) , it is found as follows: Settings-> Wireless and Neetwork->Tethering and Portable Hotspot-> USB tethering. Check the option 'USB Tethering'. When 'USB tethering' is enabled, your Linux OS will automatically install the 'Remote NDIS based Internet sharing' driver. and your computer will automatically connect to internet within a few minutes.

Windows XP:

How to Hard Reset Samsung Galaxy Y or Young GT-S5360

This post is to tell you how to hard reset a Samsung Galaxy Young. Samsung Galaxy Young is an Android phone from Samsung with model number GT - S5360 which is often referred to as Galaxy Y. Before you hard reset, you should take a backup of all your important data that may be required later. You may get some help from Youtube videos demonstrating backup process.

How to Backup Samsung Galaxy Phones to Google account

How to Backup Android How to backup contacts in Samsung Galaxy Android phone

Samsung Galaxy Y ( Young ) GT S5360

For taking .apk backups for your applications in the phone you may use applications like 'Clean Master'. Data in your memory card and contacts in SIM card will not be lost during hard reset. All the settings will be reset to the default values because the whole operating system of the phone is refreshed. You can try the following method of hard reset even if your phone is not turning ON.

After taking backup, follow the given steps:

How to Connect Windows 8 or 8.1 Compuer to Internet by USB Tethering Android Phone

Let me tell you first that USB tethering is the process of sharing the internet connection of your Android phone with your PC or laptop through USB connection. In Windows 7, Windows Vista and Linux, USB tethering works so easily that we just have to enable packet data, connect phone through USB and enable 'USB tethering' in Settings. Above mentioned operating systems automatically install the required drivers. And within few minutes, the system will connect to Internet through your USB connected Android phone. But it is not that much easy in Windows 8 or Windows 8.1. We have to manually install the driver for the Android device to enable USB tethering. In this post, I will show you how to enable USB tethering in Windows 8 and Windows 8.1.

Android Phone Secret Codes

Dialing the code

Here in this post, I am listing down some secret codes for Android phones.

*#*#4636#*#*   :Phone info (packet data), batttery info,usage statistics,wifi info

*#*#7780#*#*  :Factory reset

*2767*3855#   :Format Phone

*#*#197328640#*#*  :Service mode (version info,Factory test,and many debugs)

Sony Xperia Secret Menu for Service Test and Hard Reset

In Xperia series phones of Sony, there is a secret menu which has options for Service test and Hard reset of the phone. This menu is available almost all Xperia phones including Xperia Z, Xperia J, Xperia P, Xperia U, Xperia ION, Xperia S,Xperia E, Xperia L, Xperia tipo, Xperia arc, Xperia zola The menu can be made available by dialing a secret code in the dial-pad of the phone.

Dial pad of Sony Xperia P

The code is *#*#7378423#*#*. When you dial this code in the dialpad, the secret menu will appear which contains options:

1. Service Info
2. Service Settings
3. Service Tests
4. Customisation Settings

How to Display Mathematical Symblos, Greek Letters etc in HTML

When i was writing a post, i found it difficult to display some mathematical symbols in the post. At last, i solved it and found that there are easy to remember mnemonics for most of the symbols we come across. Sometimes you can get them only from the 'charmap' (enter charmap in 'Run' in your windows OS). There are escape sequences in HTML which will help you to include mathematical symbols and other Greek letters which are often used as variables or notation for some processes. To display these symbols in a webpage, simple mnemonics or corresponding code can be used. These informations are directly available in HTML4.0 website.

C and C++ Programs to Reverse a Number

This post includes a C program and a C++ program to reverse a given number. That is, to reverse the order of digits. If 543 is entered, it will be displayed as 345.

C Program:

#include<stdio.h>
main()
{

Conditional Operator in C and C++

Conditional Operator is an operator which is substitutive for if-else statements. It is a ternary operator (operator which operates on 3 operands). It is often called ?: operator. The operands are expression1, expression2 and expression3. The syntax is as follows:

expression1 ? expression2 : expression3

The expression expression1  will be evaluated always. Execution of expression2 and expression3 depends on the outcome of expression1. expression1 is checked whether true or not. It is considered like a boolean variable. The outcome of an expression is true if it has a non zero value. If its value is zero, the outcome of expression is false. If the expression1 is true, then expression2 is evaluated. If the expression1 is false, then expression3 is evaluated. Consider the following example:

Mathematics Capsule for Engineering Entrance Exams in India

In this post, i am adding a mathematics capsule for entrance exams for engineering in India. This capsule is based on Higher secondary syllabus and contains Formulae, shortcut equations, tips and tricks that may be helpful for solving objective questions from mathematics.
I hope this pdf will be helpful for those students who are preparing for competitive entrance exams like KEAM, AIEEE, IIT JEE etc.
Click the following link to download the capsule as pdf.
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