The processor to be used is 8051. When the button connected to P1.5 is pressed, that is, when the port is 1, Timer1 will start to work and it will generate interrupts at 1 second intervals. Under branching, a variable will be 0 if it is 1, and 1 if it is 0. The main code, depending on this changed variable; If it is 1, it will light the led connected to P2.1, that is, it will make the port 1, if it is 0, it will turn off the led, that is, it will make the port 0. When the button connected to P1.5 is released, that is, when the port is 0, Timer1 will stop working. All outputs ie leds will turn off and the main program will wait for Timer1 to run.

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Computer Fundamentals

The computer is termed computation. For calculating or computing something the device that has been used is known as the computer. Or we can say that for performing a fast arithmetic operation the device that has been used is a computer. Storing, processing, and retrieving are the main features of a computer.