51 Research and Design, Electronic Engineers website - Embedded Systems, MCU, DSP, EDA, Test and Measurement, Components, Communications, Power, Microelectronics, Semiconductors

Wednesday, December 2nd, 2009 at 04:58 | No comments

Categories: Embedded system

Tags: C language, DSP

Short Content:     The beginning of the year to the present, contacted DSP already a half year, as a result of the company nobody instruction, did such for a long time has not had any big achievement, also took many tortuous paths. Before makes the monolithic integrated circuit to arrange some procedures with C, thought personally is alright. Now looks like also is only in ate before inside the school some C language superficial knowledge initial capital, in addition some on-line ...

Monday, November 30th, 2009 at 15:07 | No comments

Categories: Embedded system

Tags: C language, MISRA, programming specifications

Short Content:     MISRA (The Motor Industry Software Reliability Association automobile industry software reliable association) is located at a Britain's transnational automobile industry association, its member has included the majority of European and American automobile producer. Its core mission is provides the service and the assistance for the automobile industry, helps the factory to develop the security, the redundant reliable embedded software. This organization most famous achievement is so-called MISRA C Coding Standard, in this standard has included 127 C speech ...

Friday, November 6th, 2009 at 18:36 | No comments

Categories: Embedded system

Tags: C language, test questions

Short Content: Editor's note: Very basically about the C language's question, an information class (computer, information project, electronic engineering, the level which communication engineering) the specialized undergraduate course graduate should achieve. The topic is not difficult, can answer fast completely, certainly also needs certain knowledge reserve.Regarding most people, we anticipated that you possibly answer wrong 3)   4) 15) topic, therefore answers in wrong 3, we thought that you are very goodAnswers in the wrong 5 topics, we thought that you also ...

Friday, November 6th, 2009 at 17:35 | No comments

Categories: Embedded system

Tags: C language, variable parameter

Short Content: We will meet some parameter integer invariable function in the C language programming, for example printf() this function, its definition will be this:int printf (const char* format,…);It besides has parameter format to be fixed, behind with the parameter integer and the type are invariable, below for example we may have the different transfer method:printf (“%d”, i);printf (“%s”, s);printf (“the number is %d, string is:%s”, i, s);Actually how writes the varying parameter the C function as well as these varying ...

Monday, November 10th, 2008 at 11:49 | No comments

Categories: Storage

Tags: C language, development, DSP, FLASH, GEL

Short Content: Introduction 　　In the DSP application system development's later period, needs to interpolate generally the user program nonvolatile storages and so on Flash, with the aim of using the parallel guidance the method to realize the user program from lifts the load. This step is called "the fever to write"; Writes in view of the Flash fever is called the Flash programming. The former programming method mostly uses the assembly language write program, the readability is bad, and will guide the ...

Sunday, November 2nd, 2008 at 18:49 | No comments

Categories: Storage

Tags: C language, dynamic memory, memory divulging, writes crosses the border

Short Content: Abstract: Introduced that a dynamic memory management module, may examine in effectively the C procedure memory divulging and writes the memory to cross the border and so on mistakes, is suitable in has standard C language development environment each kind of platform.Key word: C language dynamic memory memory divulging writes crosses the border Introduction     Presently, in the overwhelming majority embedded platform's software uses the C language compilation. Is succinct besides the code, the movement is highly effective, operates the ...

Saturday, September 6th, 2008 at 14:15 | No comments

Categories: SCM

Tags: C language

Short Content: Introduction: 　　at the beginning of 2002, the author was writing by hand a IC card prepay to consume electricity the table working routine, this electric instrument used Philips Corporation's 8 51 expansion monolithic integrated circuit 87LPC764, the request realizes many functions, including extinguished the demonstration, the load to calculate and to control, the instruction twinkle as well as the electric instrument each kind of parameter inquiry and so on, in brief, must period of revolution the unit to be ...

Saturday, September 6th, 2008 at 09:35 | No comments

Categories: DSP

Tags: C language, DSP, invertor, PWM, TMS320F240, Voltage

Short Content: Abstract: The energy back coupling system to slows down our country energy supply and demand to have the vital role contradictory, but inverts the technology to hold the important position in the energy back coupling system, mainly introduced one kind of voltage incorporation invertor. First has carried on the system analysis to the voltage invertor, has given the single-phase voltage and the three-phase voltage two kinds incorporates invertor's ideal electric circuit model. Based on this, has designed one based on ...