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Articles by Chandu yadav
Page 55 of 81
8086 program to print the table of input integer
In this program we will see how to generate table of an integer.Problem StatementWrite 8086 Assembly language program to generate a table of input integer. The number is stored at 500H, and the table will be stored at 600 onwards.DiscussionTable generation is basically the multiplication table creation. We are taking the number and initialize the counter as 0. In each step increasing the counter by 1, and multiply it with the number, then store it into the memory address. When counter becomes 0A (10 in decimal), then it stops.InputAddressData……5004…… Flow Diagram ProgramOutputAddressData……60004601086020C6031060414605186061C607206082460928……
Read More8254 Control Word and Operating modes
Here we will see the control words and the operation modes of the 8254 programmable interval timer chip.Before discussing its operating modes and control word properties, we should know about some important facts of this chip.When the chip is powering up, the state is undefined. The mode, count value, and outputs are undefined in that time.Each counter must be programmed before it is used. We do not need to program some unused counters.Counters are programmed by writing the control words and then one initial count.The structure of the counter is like this -76543210SC1SC0RW1RW2M2M1M0BCD/Binary We can select the counter by the SC1 ...
Read MoreCombine MySQL UPDATE STATEMENTS?
You can use a CASE statement for this. Let us first create a table −mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, Name varchar(20) ); Query OK, 0 rows affected (1.11 sec)Insert records in the table using insert command −mysql> insert into DemoTable(Name) values('John'); Query OK, 1 row affected (0.23 sec) mysql> insert into DemoTable(Name) values('Carol'); Query OK, 1 row affected (0.20 sec) mysql> insert into DemoTable(Name) values('David'); Query OK, 1 row affected (0.13 sec)Display all records from the table using select statement −mysql> select * from DemoTable;This will produce the following ...
Read More8085 program to add even parity to a string of 7 bit ASCII characters.
Here we will see how to add even parity to 7-bit ASCII string using 8085.Problem StatementWrite a program to add even parity to a string of 7 bit ASCII characters. The length of the string is in memory location 8040 H and the string itself begins at memory location 8041 H. Place even parity in the most significant bit of each character.Discussion8085 has parity flat. that flag will be used to check and assign parity with each ASCII character. At first we will clear the most significant bit by masking the number with 7FH. Then use OR instruction, as this ...
Read More8085 program for running light with delays using lookup table.
Here we will see how we can implement running light with some delays using 8085.Problem StatementWrite 8085 program to implement running light display with appropriate delays using lookup table stored from memory location 8100H on words.DiscussionThe patterns are stored at location 8100 onwards. We are using 8255 port IC to display the content in LED displays. After displaying, it calls the delay to wait for some time and call the next byte from memory to display. So the display pattern will be like below - ProgramAddressHEX CodesLabelsMnemonicsComments800031, 00, 82START:LXI SP, 8200 HInitializing the SP80030E, 15 MVI C, 14 HInitializing the counter800521, 00, ...
Read More8085 program to add two consecutive bytes of an array
Here we will see how we can add two consecutive elements in an array using 8085.Problem StatementWrite 8085 program to add two consecutive elements of an array and store them in the same location. The carry will be placed at bottom of the other byte. The numbers are stored from location 8001. The size of array is stored at 8000.DiscussionHere we will solve this problem by using one subroutine. That will add two consecutive numbers and stored them into correct position. That subroutine will be called multiple times to add all consecutive pairs. The task will be followed half of ...
Read MoreCheck a column for unique value in MySQL
You can use subquery for this. Let us first create a demo tablemysql> create table uniqueBothColumnValueSameDemo -> ( -> UserId int, -> UserValue int -> ); Query OK, 0 rows affected (0.64 sec)Insert some records in the table using insert command. The query is as follows −mysql> insert into uniqueBothColumnValueSameDemo values(10, 20); Query OK, 1 row affected (0.21 sec) mysql> insert into uniqueBothColumnValueSameDemo values(10, 20); Query OK, 1 row affected (0.09 sec) mysql> insert into uniqueBothColumnValueSameDemo values(20, 30); Query OK, 1 row affected (0.10 sec) mysql> insert into uniqueBothColumnValueSameDemo values(20, 40); Query OK, 1 row affected ...
Read MoreHow to delete multiple ids in MongoDB?
To delete multiple ids in MongoDB, you can use $in operator. Following is the syntaxdb.yourCollectionName.remove( { _id : { $in: [yourObjectId1, yourObjectId2, yourObjectId3)] } } );Let us create a collection with documents> db.deleteMultipleIdsDemo.insertOne({"ClientName":"Chris", "ClientAge":26}); { "acknowledged" : true, "insertedId" : ObjectId("5c9cd7d6a629b87623db1b19") } > db.deleteMultipleIdsDemo.insertOne({"ClientName":"Robert", "ClientAge":28}); { "acknowledged" : true, "insertedId" : ObjectId("5c9cd7dea629b87623db1b1a") } > db.deleteMultipleIdsDemo.insertOne({"ClientName":"Sam", "ClientAge":25}); { "acknowledged" : true, "insertedId" : ObjectId("5c9cd7e9a629b87623db1b1b") } > db.deleteMultipleIdsDemo.insertOne({"ClientName":"John", "ClientAge":34}); { "acknowledged" : true, "insertedId" : ObjectId("5c9cd7f7a629b87623db1b1c") } > db.deleteMultipleIdsDemo.insertOne({"ClientName":"Carol", "ClientAge":36}); { "acknowledged" : true, "insertedId" : ObjectId("5c9cd803a629b87623db1b1d") }Following is the query to ...
Read MoreProgram execution transfer instructions in 8086 microprocessor
These instructions are used to transfer/branch the instructions during an execution. There are two types of branching instructions. The unconditional branch and conditional branch.The Unconditional Program execution transfer instructions are as follows.OpcodeOperandDescriptionCALLaddressUsed to call a procedure and save their return address to the stack.RET----Used to return from the procedure to the main program.JMPaddressUsed to jump to the provided address to proceed to the next instruction.LOOPaddressUsed to loop a group of instructions until the condition satisfies, i.e., CX = 0 Now let us see the Conditional Program execution transfer instructions.OpcodeOperandDescriptionJCaddressUsed to jump if carry flag CY = 1JNCaddressUsed to jump if no ...
Read MoreHow to use the apply() in Android Shared preferences with example?
Before getting into shared preference apply(), we should know what is shared preferences in android. Using share preference, we can store or retrieve values as key and value pair. There are five different methods are available in share preference as shown below -Edit()- It going to edit shared preference valuescommit()- it going to commit shared preference values in xml fileapply()- It going to commit back changes from editor to shared preference.remove(String key)- It going to remove key and vales from shared preference use key.Put()- It going to put key and values to shared preference xml.A sample example syntax of shared ...
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