diff --git a/ES/Lab/Lab8/7SegUpDown-Switch.c b/ES/Lab/Lab8/7SegUpDown-Switch.c
index 7a5a1e4..9594795 100644
--- a/ES/Lab/Lab8/7SegUpDown-Switch.c
+++ b/ES/Lab/Lab8/7SegUpDown-Switch.c
@@ -16,7 +16,7 @@ int main(void){
     LPC_GPIO0->FIODIR |= (0xFF << 4);
     LPC_PINCON->PINSEL3 = 0;
     LPC_GPIO1->FIODIR |= (0x0F << 23);
-    LPC_GPIO0->FIODIR &= ~(1 << 21);
+    LPC_GPIO0->FIODIR &= ~(1 << 21); // SWITCH MAPS to 7TH PIN FROM CNC (or CNX depending on wiring)
 
     while (1) {
         n = number;