Update file week08.md

docs/assignments/week08.md

@@ -22,6 +22,8 @@ How do you know which resistor to use:[Types of Resistors and How To Choose One]
 
 ### **ARDUINO BOARD**
 
+Arduino UNO is a low-cost, flexible, and easy-to-use programmable open-source microcontroller board that can be integrated into a variety of electronic projects. This board can be interfaced with other Arduino boards, Arduino shields, Raspberry Pi boards and can control relays, LEDs, servos, and motors as an output.
+
 ![Arduino BOARD](../images/week08/Arduino-Components.png){ width=1000 }
 
 ### **BREADBOARD**