diff --git a/include/timer.h b/include/timer.h
new file mode 100644
index 0000000..1ac7d5c
--- /dev/null
+++ b/include/timer.h
@@ -0,0 +1,6 @@
+#ifndef TIMER_H
+#define TIMER_H
+
+void start_timer(void);
+
+#endif
\ No newline at end of file
diff --git a/src/timer.c b/src/timer.c
new file mode 100644
index 0000000..8125b2c
--- /dev/null
+++ b/src/timer.c
@@ -0,0 +1,24 @@
+#include<stdio.h>
+#include<stdlib.h>
+#include<graph.h>
+#define delta 1000000L
+
+void start_timer(void) {
+	unsigned long int start = Microsecondes();
+	unsigned int minute = 0;
+	unsigned int a = 0;
+
+	char buf[100];
+	while(1){				
+		unsigned long int seconde = ((Microsecondes() - start) / 1000000)-a;
+		
+		if (seconde>=60) {
+			minute +=1;
+			a += 60;
+		}
+
+		snprintf(buf, 100, "temps : %02d:%02d", minute, seconde);
+		
+		EcrireTexte(20,20, buf, 1);			
+	}
+}
\ No newline at end of file