diff --git a/ES/Lab/LAB4/BCDtoHEX.asm b/ES/Lab/LAB4/BCDtoHEX.asm
new file mode 100644
index 0000000..f825553
--- /dev/null
+++ b/ES/Lab/LAB4/BCDtoHEX.asm
@@ -0,0 +1,35 @@
+	AREA RESET, DATA, READONLY
+	EXPORT __Vectors
+__Vectors
+	DCD 0x10001000
+	DCD Reset_Handler
+	ALIGN
+	
+	AREA MYCODE, CODE, READONLY
+	ENTRY
+	EXPORT Reset_Handler
+
+Reset_Handler
+	LDR R0, =SRR
+	MOV R10, #3
+	LDR R1, [R0]
+	MOV R2, #1
+	
+UP 
+	AND R3, R1, #0x0F
+	MLA R4, R2, R3, R4
+	LSR R1, #4
+	MOV R5, #0x0A
+	MUL R2, R5
+	SUBS R10, #1
+	BNE UP
+	
+STOP
+	B STOP
+	
+SRR DCD 0x45
+
+	AREA mydata, DATA, READWRITE
+SRC DCD 0x45
+	
+	END
\ No newline at end of file