--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Small_CPU/Inc/system_stm32f4xx.h	Sat Apr 28 11:52:34 2018 +0200
@@ -0,0 +1,99 @@
+/**
+  ******************************************************************************
+  * @file    system_stm32f4xx.h
+  * @author  MCD Application Team
+  * @version V1.0.0
+  * @date    30-September-2011
+  * @brief   CMSIS Cortex-M4 Device System Source File for STM32F4xx devices.  
+  ******************************************************************************  
+  * @attention
+  *
+  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
+  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
+  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
+  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
+  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
+  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
+  *
+  * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
+  ******************************************************************************  
+  */ 
+
+/** @addtogroup CMSIS
+  * @{
+  */
+
+/** @addtogroup stm32f4xx_system
+  * @{
+  */  
+  
+/**
+  * @brief Define to prevent recursive inclusion
+  */
+#ifndef SYSTEM_STM32F4XX_H
+#define SYSTEM_STM32F4XX_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif 
+
+/** @addtogroup STM32F4xx_System_Includes
+  * @{
+  */
+
+/**
+  * @}
+  */
+
+
+/** @addtogroup STM32F4xx_System_Exported_types
+  * @{
+  */
+
+extern uint32_t SystemCoreClock;          /*!< System Clock Frequency (Core Clock) */
+
+
+/**
+  * @}
+  */
+
+/** @addtogroup STM32F4xx_System_Exported_Constants
+  * @{
+  */
+
+/**
+  * @}
+  */
+
+/** @addtogroup STM32F4xx_System_Exported_Macros
+  * @{
+  */
+
+/**
+  * @}
+  */
+
+/** @addtogroup STM32F4xx_System_Exported_Functions
+  * @{
+  */
+  
+extern void SystemInit(void);
+extern void SystemCoreClockUpdate(void);
+/**
+  * @}
+  */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* SYSTEM_STM32F4XX_H */
+
+/**
+  * @}
+  */
+  
+/**
+  * @}
+  */  
+/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/