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Articles by George John
Page 58 of 79
String manipulation instructions in 8086 microprocessor
String is a group of bytes/words and their memory is always allocated in a sequential order. String is either referred as byte string or word string. Here we will see some instructions which are used to manipulate the string related operations.The String manipulation instructions are as follows.OpcodeOperandDescriptionREPInstructionUsed to repeat the given instruction till CX ≠ 0.REPE/REPZInstructionUsed to repeat the given instruction until CX = 0 or zero flag ZF = 1.REPNE/REPNZInstructionUsed to repeat the given instruction until CX = 0 or zero flag ZF = 1.MOVS/MOVSB/MOVSW----Used to move the byte/word from one string to another.COMS/COMPSB/COMPSW----Used to compare two string bytes/words.INS/INSB/INSW----Used ...
Read MoreReset Accumulator (8085 & 8086 microprocessor)
In this section we will see how to reset the accumulator content in Intel 8085 and 8086 microprocessors.In both of the microprocessors, there are four instructions to do the work. These instructions are doing the same in both cases.Let us see the 8085 instructions first to reset the Accumulator.MnemonicsDescriptionMVI A, 00HThis instruction loads 00H into the accumulator. This is two-byte instruction.ANI 00HThis instruction performs AND operation between accumulator and 00H. This is also a two-byte instruction.XRA AThis one-byte instruction is performing the XOR operation with accumulator itself.SUB ASUB A is another one-byte instruction. It subtracts accumulator value from the accumulator. The ...
Read More8085 Program to do an operation on two BCD numbers based on the contents of X
Now let us see a program of Intel 8085 Microprocessor. In this program we will see how to do different operations on BCD numbers based on choice.Problem Statement:Write 8085 Assembly language program to perform some operations on two 8-bit BCD numbers base on choice.Discussion:In this program we are taking a choice. The choice value is stored at memory location 8000H (named as X). And the BCD numbers are stored at location 8001H and 8002H. We are storing the result at location 8050H and 8051H.Here if the choice is 00H, then it will perform addition, for 01H, it will perform subtraction, ...
Read MoreHow to get full screen activity in android?
This example demonstrate about How to get full screen activity 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 the digital clock view to show a clock.Step 3− Add the following code to java/MainActivity.xmlpackage com.example.myapplication; import android.annotation.TargetApi; import android.content.pm.ActivityInfo; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.v7.app.AppCompatActivity; import android.view.View; import android.view.Window; import android.view.WindowManager; public class MainActivity extends AppCompatActivity { @TargetApi(Build.VERSION_CODES.LOLLIPOP) ...
Read MoreC++ Program to Represent Graph Using Incidence List
This program represents a graph using incidence list and the time complexity of this algorithm is O(e).AlgorithmBegin Take the input of the number of vertex ‘v’ and edges ‘e’ and also take the input of ‘e’ pairs of vertexes of the given graph in e[][]. For each edge print the corresponding vertex involved in that connection. EndExample Code#include using namespace std; int main() { int i, v, e, j, c; coutv; coute; int edge[e][2]; for(i = 0; i < e; i++) { cout
Read MoreHow can I sum columns across multiple tables in MySQL?
To sum columns across multiple tables, use UNION ALL. To understand the concept, let us create first table. The query to create first table is as followsmysql> create table Products1 -> ( -> ProductId int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> ProductName varchar(20), -> ProductPrice int -> ); Query OK, 0 rows affected (0.50 sec)Insert some records in the first table using insert command. The query is as follows −mysql> insert into Products1(ProductName, ProductPrice) values('Product-1', 100); Query OK, 1 row affected (0.22 sec) mysql> insert into Products1(ProductName, ProductPrice) values('Product-2', 200); Query OK, 1 row affected ...
Read MoreHow to create ripple animation in my Android App?
Before getting into the code, we should know what is ripple animation in android. Ripple animation is just like wave momentum. In android it is appears on view like Textview, Button, etc using background attribute.This example demonstrate about how to integrate ripple animation to view.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 added a button with back ground as ripple.Step 3 − Create a file ...
Read MorePre & post increment operator behavior in C, C++, Java, and C#
The Pre increment and post increment both operators are used as increment operations. The pre increment operator is used to increment the value of some variable before using it in an expression. In the pre increment the value is incremented at first, then used inside the expression.if the expression is a = ++b; and b is holding 5 at first, then a will hold 6. Because increase b by 1, then set the value of a with it.Example Code#include using namespace std; main () { int a, b = 15; a = ++b; cout
Read MoreIn Android how to register a custom Intent filter to a broadcast receiver?
Before getting into the example, we should know what is intent filter in android. An intent filter is an instance of the IntentFilter class. Intent filters are helpful while using implicit intents, It is not going to handle in java code, we have to set it up in AndroidManifest.xml. Android must know what kind of intent it is launching so intent filters give the information to android about intent and actions.Before launching intent, android going to test action test, category test and data test. This example demonstrate about how to use custom intent filters to a broadcast receiver in android.Step ...
Read MoreCan we store CSS color values in MySQL?
Yes, we can. In order to store CSS color value, you can use CHAR(6) without # symbol for hexadecimal. Let us see an example and create a tablemysql> create table storeCSSColorDemo -> ( -> CSSValue char(6) -> ); Query OK, 0 rows affected (0.53 sec)Insert some records in the table using insert command. The records here are individual color values in hexadecimal, for which we have used char(6)mysql> insert into storeCSSColorDemo values('FF0000'); Query OK, 1 row affected (0.13 sec) mysql> insert into storeCSSColorDemo values('FFA500'); Query OK, 1 row affected (0.86 sec) ...
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