We have already seen how to convert Hexadecimal digit to its ASCII equivalent. In this section, we will see how to convert two-byte (4-digit) Hexadecimal number to ASCII. Each nibble of these numbers is converted to its ASCII value.We are using one subroutine to convert a hexadecimal digit to ASCII. ... Read More

Now we will see another arithmetic operation. The divide operation to divide two 8-bit numbers using this 8051 microcontroller. The register A and B will be used in this operation. No other registers can be used for division. The result of the division has two parts. The quotient part and ... Read More

The Intel 8279 is used for keyboard interfacing but it can also be used for multiplexed 7-segment LED display interfacing. To display a character into 7-segment display we have to store 7-segment code in a display RAM location. The display RAM of this chip can store 16 bytes of data.Write ... Read More

In 8085 is having five internal interrupt signals that correspond to the five external interrupt pins. And these interrupts are only recognized only when the internal interrupt signal is activated, the 8085 gets interrupted, provided higher priority internal interrupt signals are not active at the same time. The 8085 checks ... Read More

This property specifies a sound to be played before speaking an element's content to delimit it from other. The possible values are −url − The URL of a sound file to be played.none − Nothing has to be played.ExampleYou can try to run the following code to implement cue-before property ... Read More

An electronic circuit is a group of electronic components connected for a specific purpose.A simple electronic circuit can be designed easily because it requires few discrete electronic components and connections. However, designing a complex electronic circuit is difficult, as it requires a number of discrete electronic components and their connections. ... Read More

After machine level language, the next level of development in the evolution of computer languages was the Assembly Language. Machine level language uses only the binary language. But on the other hand, assembly language uses mnemonics or symbolic instructions in place of a sequence of 0s and 1s. As example, ... Read More

This example demonstrate about How to check android device having finger print sensorStep 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 ... Read More

The defined() function in PHP checks that constant exists or not.Syntaxdefined(name)Parametersname− The name of constant.ReturnThe defined() function returns true if the constant exists otherwise false.ExampleThe following is an example that checks whether a constant exist. Live DemoOutputThe following is the output.1

The FILTER_SANITIZE_URL constant removes all illegal URL characters from a string. It allows the following −$-_.+!*'(),{}|\^~[]`">