10种软件滤波方法的示例程序 假定从8位AD中读取数据（如果是更高位的AD可定义数据类型为int),子程序为get_ad(); 1、限副滤波 /* A值可根据实际情况调整 value为有效值，new_value为当前采样值 滤波程序返回有效的实际值 */ #define A 10 char value; char filter() { char new_value; new_value = get_ad(); if ( ( new_value - value > A ) || ( value - new_value > A ) return value; return new_value; }
上传时间： 2013-11-11
上传用户：gxf2016
This example provides a description of how to use the USART with hardware flowcontrol and communicate with the Hyperterminal.First, the USART2 sends the TxBuffer to the hyperterminal and still waiting fora string from the hyperterminal that you must enter which must end by '\r'character (keypad ENTER button). Each byte received is retransmitted to theHyperterminal. The string that you have entered is stored in the RxBuffer array. The receivebuffer have a RxBufferSize bytes as maximum. The USART2 is configured as follow: - BaudRate = 115200 baud - Word Length = 8 Bits - One Stop Bit - No parity - Hardware flow control enabled (RTS and CTS signals) - Receive and transmit enabled - USART Clock disabled - USART CPOL: Clock is active low - USART CPHA: Data is captured on the second edge - USART LastBit: The clock pulse of the last data bit is not output to the SCLK pin
上传时间： 2013-10-31
上传用户：yy_cn
This example shows how to update at regulate period the WWDG counter using theEarly Wakeup interrupt (EWI). The WWDG timeout is set to 262ms, refresh window set to 41h and the EWI isenabled. When the WWDG counter reaches 40h the EWI is generated and in the WWDGISR the counter is refreshed to prevent a WWDG reset and led connected to PC.07is toggled.The EXTI line9 is connected to PB.09 pin and configured to generate an interrupton falling edge.In the NVIC, EXTI line9 to 5 interrupt vector is enabled with priority equal to 0and the WWDG interrupt vector is enabled with priority equal to 1 (EXTI IT > WWDG IT). The EXTI Line9 will be used to simulate a software failure: once the EXTI line9event occurs (by pressing Key push-button on EVAL board) the correspondent interruptis served, in the ISR the led connected to PC.07 is turned off and the EXTI line9pending bit is not cleared. So the CPU will execute indefinitely EXTI line9 ISR andthe WWDG ISR will never be entered(WWDG counter not updated). As result, when theWWDG counter falls to 3Fh the WWDG reset occurs.If the EXTI line9 event don抰 occurs the WWDG counter is indefinitely refreshed inthe WWDG ISR which prevent from WWDG reset. If the WWDG reset is generated, after resuming from reset a led connected to PC.06is turned on. In this example the system is clocked by the HSE(8MHz).
上传时间： 2013-11-11
上传用户：gundamwzc
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[FK_药品库存_药品资料]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[药品库存] DROP CONSTRAINT FK_药品库存_药品资料 GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[FK_门诊划价明细_门诊划价]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[门诊划价明细] DROP CONSTRAINT FK_门诊划价明细_门诊划价 GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[FK_门诊挂号_门诊挂号类型]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[门诊挂号] DROP CONSTRAINT FK_门诊挂号_门诊挂号类型 GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[产地]') and OBJECTPROPERTY(id, N'IsUserTable') = 1) drop table [dbo].[产地] GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[医生资料]') and OBJECTPROPERTY(id, N'IsUserTable') = 1) drop table [dbo].[医生资料]
上传时间： 2013-11-12
上传用户：sunshie
if exists (select * from dbo.sysobjects where id = object_id(N\'[dbo].[FK_帐单明细_入住单]\') and OBJECTPROPERTY(id, N\'IsForeignKey\') = 1) ALTER TABLE [dbo].[帐单明细] DROP CONSTRAINT FK_帐单明细_入住单 GO if exists (select * from dbo.sysobjects where id = object_id(N\'[dbo].[FK_入住单_客房信息]\') and OBJECTPROPERTY(id, N\'IsForeignKey\') = 1) ALTER TABLE [dbo].[入住单] DROP CONSTRAINT FK_入住单_客房信息 GO if exists (select * from dbo.sysobjects where id = object_id(N\'[dbo].[FK_客房信息_客房类型]\') and OBJECTPROPERTY(id, N\'IsForeignKey\') = 1) ALTER TABLE [dbo].[客房信息] DROP CONSTRAINT FK_客房信息_客房类型
上传时间： 2014-03-23
上传用户：chenhr
c#数据库开发实例:有很多的实例，对学习非常的有意义！ 酒店管理系统源代码 医院信息管理系统源代码 图书馆管理系统源代码 财务管理系统源代码 生产管理系统源代码 人力资源管理实例程序源代码 进销存管理实例程序源代码 if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[采购订单_供货商_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[采购订单] DROP CONSTRAINT 采购订单_供货商_fk GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[采购订单历史_供货商_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[采购订单历史] DROP CONSTRAINT 采购订单历史_供货商_fk
上传时间： 2013-10-30
上传用户：392210346
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[采购订单_供货商_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[采购订单] DROP CONSTRAINT 采购订单_供货商_fk GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[采购订单历史_供货商_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[采购订单历史] DROP CONSTRAINT 采购订单历史_供货商_fk GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[采购合同_供货商_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[采购合同] DROP CONSTRAINT 采购合同_供货商_fk GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[进货单_供货商_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[进货单] DROP CONSTRAINT 进货单_供货商_fk
上传时间： 2013-11-15
上传用户：wkxiian
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[FK_工资发放历史表_职员基本信息表]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[工资发放历史表] DROP CONSTRAINT FK_工资发放历史表_职员基本信息表 GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[FK_月工资统计表_职员基本信息表]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[月工资统计表] DROP CONSTRAINT FK_月工资统计表_职员基本信息表 GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[FK_职员惩罚表_职员基本信息表]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[职员惩罚表] DROP CONSTRAINT FK_职员惩罚表_职员基本信息表
上传时间： 2014-11-17
上传用户：xinzhch
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[mrp物料需求计算_物料编号_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[mrp物料需求计算] DROP CONSTRAINT mrp物料需求计算_物料编号_fk GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[mrp物料需求计算结果_物料编号_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[mrp物料需求计算结果] DROP CONSTRAINT mrp物料需求计算结果_物料编号_fk GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[mrp物料需求历史_物料编号_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[mrp物料需求历史] DROP CONSTRAINT mrp物料需求历史_物料编号_fk GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[物料清单_物料编号_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[物料清单] DROP CONSTRAINT 物料清单_物料编号_fk
上传时间： 2013-11-23
上传用户：wcl168881111111
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[FK_分录表_凭证表]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[分录表] DROP CONSTRAINT FK_分录表_凭证表 GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[本期汇总账簿_科目代码_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[本期汇总账簿] DROP CONSTRAINT 本期汇总账簿_科目代码_fk GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[本期明细账簿_科目代码_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[本期明细账簿] DROP CONSTRAINT 本期明细账簿_科目代码_fk GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[分录表_科目代码_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[分录表] DROP CONSTRAINT 分录表_科目代码_fk GO
上传时间： 2013-11-20
上传用户：清山绿水
