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Articles on Trending Technologies
Technical articles with clear explanations and examples
Simulation of 8 to 1 multiplexer
We shall write a program in assembly language just for the simulation of a multiplexer 8 to 1 which is used by the logic controller interface.The pins of the 8 to 1 multiplexer to be simulated are assumed to be as shown in the fig.For this multiplexer simulation, 8255 ports as indicated in the following provide the inputs and outputs.Port B used as I7-0 inputs;Pin 7 of Port C used as chip select;Pins 6-4 of Port C used as select inputs;Pin 0 of Port A used as output of multiplexer.Sample CodeFILE NAME Prog_MUX.ASM ORG C100H TABLE DB 01H, 02H, 04H, 08H, ...
Read MoreHow to get current Wi-Fi network id in android?
This example demonstrates How to get current Wi-Fi network id in android.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. In the above code, we have taken text view to show WIFI network id.Step 3 − Add the following code to src/MainActivity.javapackage com.example.myapplication; import android.net.wifi.WifiInfo; import android.net.wifi.WifiManager; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.v7.app.AppCompatActivity; import android.text.format.Formatter; import android.widget.TextView; public class MainActivity extends AppCompatActivity { TextView textView; @RequiresApi(api ...
Read MoreAndroid Recyclerview GridLayoutManager column spacing
This example demonstrates about Android Recyclerview GridLayoutManager column spacingStep 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. In the above code, we have taken recyclerview.Step 3 − Add the following code to src/MainActivity.javapackage com.example.myapplication; import android.annotation.TargetApi; import android.os.Build; import android.os.Bundle; import android.support.v4.content.ContextCompat; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.DefaultItemAnimator; import android.support.v7.widget.DividerItemDecoration; import android.support.v7.widget.GridLayoutManager; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.support.v7.widget.Toolbar; import android.widget.TextView; import android.widget.Toast; import java.util.ArrayList; public class ...
Read MoreCan we order a MySQL result with mathematical operations?
Yes, we can order with mathematical operations using ORDER BY clause. Let us first create a table:mysql> create table orderByMathCalculation -> ( -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> Quantity int, -> Price int -> ); Query OK, 0 rows affected (0.57 sec)Following is the query to insert some records in the table using insert command:mysql> insert into orderByMathCalculation(Quantity, Price) values(10, 50); Query OK, 1 row affected (0.21 sec) mysql> insert into orderByMathCalculation(Quantity, Price) values(20, 40); Query OK, 1 row affected (0.14 sec) mysql> insert into orderByMathCalculation(Quantity, Price) values(2, 20); Query ...
Read MoreC++ Program to Implement Gauss Seidel Method
Gauss Seidel method is used to solve linear system of equations in iterative method. This is a C++ Program to Implement Gauss Seidel Method.AlgorithmBegin Take the dimensions of the matrix p and its elements as input. Take the initials values of x and no of iteration q as input. While q>0 Make a for loop i = 0 to p-1 initialize n[i] = (b[i] / a[i][i]). Make a for loop i = 0 to p-1 If (j == ...
Read MoreIs there a built-in function for week of the month in MySQL?
There is no standard function to get week of month in MySQL. You need to use the following syntax −SELECT WEEK(yourDateColumnName, 5) - WEEK(DATE_SUB(yourDateColumnName, INTERVAL DAYOFMONTH(yourDateColumnName) - 1 DAY), 5) + 1 AS anyAliasName FROM yourTableName;To understand the above syntax, let us create a table. The query to create a table is as follows −mysql> create table FirstWeekOfMonth -> ( -> Id int NOT NULL AUTO_INCREMENT primary key, -> yourdate date -> ); Query OK, 0 rows affected (2.50 sec)Now you can insert some records in the table ...
Read MoreAdd a value to Unit Tuple in Java
The addAtX() method is used to add value to the Tuple. The index can be set here with the X i.e. the place where the value gets added.Let us first see what we need to work with JavaTuples. To work with the Unit class in JavaTuples, you need to import the following package −import org.javatuples.Unit;Here, we have also used the Pair class, therefore import the following package also −import org.javatuples.Pair;Note − Steps to download and run JavaTuples program If you are using Eclipse IDE to run Unit Class in Java Tuples, then Right Click Project → Properties → Java Build ...
Read MoreExplain the architecture of JDBC?
If you want to develop a Java application that communicates with a database, you should use JDBC API. A driver is the implementation of the said API; various vendors provide various drivers, you need to use a suitable driver with respect to the database you need to communicate with. The driver manager loads the driver and manages the driver.Following are the components of JDBC:JDBC DriverManager: The DriverManager class of the java.sql package manages different types of JDBC drivers. This class loads the driver classes. In addition to this whenever a new connection establishes it chooses and loads the suitable driver ...
Read MoreBest replacement of onItemClickListner in android recyclerview?
This example demonstrates about Best replacement of onItemClickListner in android recyclerviewStep 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. In the above code, we have taken recyclerview.Step 3 − Add the following code to src/MainActivity.javapackage com.example.myapplication; import android.annotation.TargetApi; import android.os.Build; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.DefaultItemAnimator; import android.support.v7.widget.DividerItemDecoration; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.support.v7.widget.Toolbar; import android.widget.TextView; import java.util.ArrayList; public class MainActivity extends AppCompatActivity { ...
Read MoreHow to add column using alter in MySQL?
Following is the syntax to add column using alter in MySQL:alter table yourTableName add column yourColumnName yourDataType default yourValue;Let us first create a table:mysql> create table alterTableDemo -> ( -> Id int, -> Name varchar(10) -> ); Query OK, 0 rows affected (0.69 sec)Let us check the description of the table using DESC command. This displays Field, Type, Key, etc. of the table:mysql> desc alterTableDemo;This will produce the following output+-------+-------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +-------+-------------+------+-----+---------+-------+ | Id | int(11) | YES ...
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