Chapter 4.3 - 8051 On Breadboard with Switches and Multiple LED - Circuit Diagram

As you can see in the circuit diagram the rest of the setup is same as the previous circuit diagram except that it has got switches connected with its port 2. In the figure we can clearly see that the switches are connected to:

Switch 1 - Port 2.0
Switch 2 - Port 2.1
Switch 3 - Port 2.2
Switch 4 - Port 2.3

There other end is connected to VCC or +5V. So when the switch is pressed, the input of ports will receive the logic 1 . We will program it such a way that it will glow the led in the pattern depending upon the switches pressed. Now jump to the next chapter to continue practical tutorial on breadboard.

Unknown is a medium for hobbyist and enthusiasts to learn 8051 microcontroller from scratch on bread board.

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