Update more details

README.md

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-# Smart-counting-system-for-parking-area
+# Smart-counting-system-for-parking-area
+In this problem, me and my teamate propose a simple circuit for counting available and taken slots in a praking area automatically and display them to LCD mornitor to inform customer.
+Specially, for both enter and exit gates, they can work simultaneously without overlap or error
+
+##Hardware required
+- Arduino or Genuino Board 	        (x1)
+- Servo SG90  	                    (x2)
+- LCD1602	                          (x2)
+- Potentiometer 	                  (x1)
+- Ultrasonic distance sensors 	    (x2)
+- 220 ohm resistors	
+- Hook-up wires
+- Breadboard
+
+##Details
+We have attached the documentation about this project in [Smart parking.pdf](https://github.com/DarkMatter1970s/Smart-counting-system-for-parking-area/blob/main/Smart%20parking.pdf) which includes everything from design to implementation this idea.
+
+##Circuit preview
+![Smart counting system for parking area](https://user-images.githubusercontent.com/88246407/139109971-c4f79da6-b593-4d91-93e5-5d1061ff1dd7.png)
+
+##Contributors
+- Lê Hoàng Phúc
+- Nguyễn Tuấn Minh