High pass filter – It allows only higher frequencies, this done by allocating a cut off frequency which has a value of low frequency that can be allowed. In description it attenuates any low frequency.
Tuesday, November 17, 2015
Radio System Filters
A filter device is that used to allow or stop selected frequencies, or eliminate (filter out) any unwanted signals. In more technical, an RF filter is designed to allow attenuation or transmission of range of frequencies that would be applied. For an example, an RF filter helps to cut out RF interference (generally noise) that could occur if a hairdryer or lamp or else any noisy device is activated. RF filter used in different scenarios as per the requirement. Normally, there are basic four types of RF filters available in market.
High pass filter – It allows only higher frequencies, this done by allocating a cut off frequency which has a value of low frequency that can be allowed. In description it attenuates any low frequency.
High pass filter – It allows only higher frequencies, this done by allocating a cut off frequency which has a value of low frequency that can be allowed. In description it attenuates any low frequency.
Monday, January 19, 2015
Delete All Your Gmail Inbox At Once
This is a common problem to most of us. When we register in different different web sites, they will sent some newsletters, updates, offers every time. Sometimes this is a big issue. And this unwanted emails will full your gmail account. And deleting deleting them as easy as following...
First Log into your gmail account.
First Log into your gmail account.
Wednesday, July 2, 2014
"Chess Free" for chess lovers
If you are a big fan of chess, I think this time I got very
important and a valuable app that make you more love to chess.
Monday, June 16, 2014
HTML redirect to mobile web page automatically
When the user or the client visit your website, if they see your web without any responsively it might be problem. Because the contents are may be not in the right places. So the right and most used way is to redirect them to separated mobile page. So here is the simplest source code to do that (in a javascript).
Thursday, January 2, 2014
PHP Simple Contact Us Form
So first thing first. You needed to design the main page that contain the fields that you want to get from the user. And here my main page is main.html,
<html>
<head>
<title>Cantact Us Form</title>
</head>
<body>
<form name='form' method='post' action="send_mail.php">
<input type="text" name="name" />
<input type="text" name="email"/>
<textarea name="msg" cols="85" rows="5" ></textarea>
<input type="submit" value="Submit" name="submit_email" />
</form>
</body>
</html> Wednesday, January 1, 2014
SQLite Android JAVA Tutorial 04 – Update DB & Delete from DB
Update DB :
Following Java code shows how we can use UPDATE statement to update any record from our table test_table,
public class Sqlite_Tute extends Activity {SQLiteDatabase db;@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(R.layout.sqlite_tute);try{db = openOrCreateDatabase("testDB", MODE_PRIVATE,null);db.execSQL("CREATE TABLE IF NOT EXISTS test_table (_id INTEGER PRIMARY KEY AUTOINCREMENT,_name TEXT,_email TEXT,_age INTEGER);");}catch(Exception e){Log.d("rockman", "DB Creation or TABLE Creation ERROR--"+e.toString());}/////////////////////////// UPDATE PARTString email = ”test123@test.com”; //new valueint age = 34; //new valuetry{ContentValues values = new ContentValues();values.put("_email", email);values.put("_age", age);db.update("test_table", values, "id=15", null);}catch(Exception e){Log.d("rockman", "UPDATE ERROR--"+e.toString());}}}
SQLite Android JAVA Tutorial 03 – Insert into DB & Select from DB
Insert into DB :
Let’s say we need to insert a raw of data now. The following Java program shows how we can insert records in our test_table created in previous post.
public class Sqlite_Tute extends Activity {SQLiteDatabase db;@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(R.layout.sqlite_tute);try{db = openOrCreateDatabase("testDB", MODE_PRIVATE,null);db.execSQL("CREATE TABLE IF NOT EXISTS test_table (_id INTEGER PRIMARY KEY AUTOINCREMENT,_name TEXT,_email TEXT,_age INTEGER);");}catch(Exception e){Log.d("rockman", "DB Creation or TABLE Creation ERROR--"+e.toString());}/////////////////////////// INSERT PARTString name = ”Rockman”;String email = ”test@test.com”;int age = 24;try{ContentValues values = new ContentValues();values.put("_name", name);values.put("_email", email);values.put("_age", age);db.insert("test_table", null, values);}catch(Exception e){Log.d("rockman", "INSERT ERROR--"+e.toString());}}}
SQLite Android JAVA Tutorial 02 – Connecting to DB & Create a table
Connecting to DB :
First you need to import android.database.sqlite.SQLiteDatabase,
import android.database.sqlite.SQLiteDatabase;
Now within the main class create a variable using SQLiteDatabase class. Using that variable we are going to do create OR open a database called “testDB”. If the “testDB” is previously created then it will open. And if the “testDB” not found the it will be created and open it.
The following JAVA program shows how to do that.
public class Sqlite_Tute extends Activity {SQLiteDatabase db;@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(R.layout.sqlite_tute);try{db = openOrCreateDatabase("testDB", MODE_PRIVATE,null); }catch(Exception e){Log.d("rockman", "DB Creation ERROR--"+e.toString());}}}
Sunday, December 29, 2013
SQLite Android JAVA Tutorial 01 – Introduction, Requirements & Installation
Introduction :
First I’ll give you a brief introduction about this SQLite, so SQLite is a very small software library. It is a server less and less configuration (actually zero) SQL database engine. But it supports terabyte sized databases and gigabyte sized strings and blobs. And supported by systems like Linux, Mac OS-X, Android, iOS, Win32, WinCE, WinRT.
Friday, September 13, 2013
Installig TeamViewer for Ubuntu Linux
TeamViewer 8.0 full version for linux ubuntu
Teamviewer is a program that provides the Remote Desktop facility, but unlike normal windows remote desktop or linux remote desktop clients you don't need the IP address of your partner to connect to your partner, and also you can connect with the clients on different platforms via Internet, you need only the ID and the Password of your partner to connect with and control or watch his computer, and team viewer also very help full for IT administrators to show someone who is not very good with computers how to do something or show them where to go to get something.
Instead of remote desktop feature it has desktop sharing, online meetings, web conferencing and file transfer between computers. Team Viewer operates with the Microsoft Windows, OS X, Linux, iOS, Android, Windows Server and Windows Phone operating systems.
Turn Your computer into a WiFi Access point, Hotspot in ubuntu linux
Turn Your computer into a WiFi Access point / Hotspot in ubuntu linux
This guide will help you to turn your Laptop or wireless LAN capable desktop in to the hotspot. You already know Ubuntu OS has this feature , but it is working as Ad-Hoc hotspot which cannot connect be connect your android smart phone, I Phone, DLNA TV or any other wireless device with your computer.
But this solution will work only for Atheros type wireless adapters and make sure you have the driver ath5k,ath9k,ath9k_htc , but don’t worry most of wireless adapters are atheros
Thursday, September 12, 2013
Five things to do after installing Ubuntu
Five things to do after installing UBUNTU
Install Flash Player
Normally cannonical doesn't ship latest adobe flashplayer with their latest distribution, therefor you need to install it manuallay
you can download the latest flashplayer from get.adobe.com/flashplayer/
and select ".tar.gz for other linux"
extract it
tar -zxvf install_flash_player_11_linux.x86_64.tar.gz
change directory into the extracted folder
cd install_flash_player_11_linux.x86_64
copy libflashpalyer.so into the browser plugin page ex. firefox
sudo cp libflashpalyer.so /usr/lib/mozilla/plugins
or you can simply search "adobe flash" in ubuntu software center and install it
Install Conky for Ubuntu
Install Conky for Ubuntu
Conky is a free software system monitor for the X Window System. It is available for Linux, Conky is highly configurable and is able to monitor many system variables including the status of the CPU, memory, swap space, disk storage, temperatures, processes, network interfaces etc ,
This guide will help you to install conky to your system and displat some conky gadgets in your desktop in order to see datails of the system and as well as decorating your display
This guide will help you to install conky to your system and displat some conky gadgets in your desktop in order to see datails of the system and as well as decorating your display
Wednesday, September 11, 2013
FileDiva – The New Way to Search Files
So today I’ll post something very important to you day-to-day life.
So let’s say you need to find a specific file from the internet.And you want to download it. The regular
way to do that is search in Google and download it. So I'll show the new way to that.
It’s a File Search Engine called FileDiva.
Tuesday, August 27, 2013
Sending UDP broadcast socket Messages (Android | Java)
What is a broadcast message?
- If you want to send some message to every node on your network, that is a broadcast message.
What UDP?
- With UDP, computer applications can send messages, in this case referred to as datagrams, to other hosts on an Internet Protocol (IP) network without prior communications to set up special transmission channels or data paths. UDP uses a simple transmission model with a minimum of protocol mechanism. It has no handshaking dialogues, and thus exposes any unreliability of the underlying network protocol to the user's program.
Wednesday, July 24, 2013
Installing Microsoft Office 2010 in Ubuntu Linux
Microsoft Office 2010 Installation in Ubuntu
You Probably have worked with Microsoft office suite then you know the strength of the Microsoft office package. No doubt Libre office ond Open office are the best open source options for the Microsoft office but you may more friendlier with microsoft version than others, You may miss your favorite office suite since you have being using Linux.
Monday, July 22, 2013
B.A.T.M.A.N. protocol for Ubuntu(Linux) Part-2
O.K. like I said in my previous post, B.A.T.M.A.N.
need an interface to run.so in this post we gone a cover that part.
First you need to check your current interface
by using this command,
iwconfig
If you see wlan0 there you are ready to go.
But if you doesn’t see make sure Wi-Fi is enabled. And identified your Wi-Fi
interface.
B.A.T.M.A.N. protocol for Ubuntu(Linux) Part-1
My current
operating system is Ubuntu 12.10
And you need
a Wi-Fi feature in your lap or pc in order to do this.
And internet
connection.
First you
started with this command.
apt-get update
Because you
needed latest repositories for implement B.A.T.M.A.N. in Ubuntu environment.
apt-get install linux-headers-'*'
And you need to
install linux headers ,gcc ,g++.
apt-get install g++ gcc
Saturday, July 6, 2013
Change color themes in Ubuntu
Change color themes in Ubuntu
Change Themes using Unity Tweak Tool
Most of the people who uses Ubuntu as their OS doesn't like Ubuntu orange color scheme and there are no any option to change the color scheme from the desktop settings. This post will help those who need to remove the orange color completely from the Ubuntu.
Wednesday, June 12, 2013
Mobile Partner 16.0 for Linux / Ubuntu
Installing Mobile Partner in Ubuntu
You can plug and play your Huawei 3G dongle in Ubuntu or most linux systems without installing any third party driver software. But you cannot send SMS from your Huawei device which is capable.
Mobile Partner is Windows based driver software for Huawei 3G dongles. using this software we can send SMS and view usage graph of the device, but unfortunately usage graph is not working in linux based systems, but you can send SMS
There are newer mobile partner versions also available for huawei devices with various features available on you modem such as USSD, calling and vediocalling facility, i tried those versions also and failed but 16.0
Subscribe to:
Posts (Atom)
