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

Saturday, November 21st, 2009 at 00:33 | No comments

Categories: Embedded system

Tags: ARM, Embedded system

Short Content: Abstract this article introduced in detail in the embedded platform compiles the system software and application software's method with the C language. Although is aims at the ARM platform introduction, but the basic experience and the algorithm are also suitableIs in harmony with other embedded platforms the software design. 1 introduction        The no-operation system support's embedded software guides (BOOT), periphery aspects and so on driver, store management, system IPO, correspondence, application procedure including the system, needs to unify uses ...

Monday, November 9th, 2009 at 05:27 | No comments

Categories: Embedded system

Tags: C, Embedded system

Short Content:          Is different in the general form software programming, the embedded system programming establishment in the specific hardware platform, will request its programming language to have the strong hardware direct operation ability inevitably. Without doubt, the assembly language has such special characteristic. But, attributes to the assembly language performance history the complexity, it is not the embedded system development general choice. But compares with it, C language--One kind " high-level preliminary " language, then becomes the embedded system development ...

Monday, November 9th, 2009 at 02:33 | No comments

Categories: Embedded system

Tags: C, Embedded system

Short Content:          Data indicator 　　In embedded system's programming, requests in the specific memory unit read-write content, the assembly to have the corresponding MOV instruction frequently, but does not have the direct visit specific address ability basically besides the C/C other programming language. In embedded system's actual debugging, draws support to the specific address unit content read-write ability which the C language indicator has. Occurs by the indicator direct operation memory in the following several kind of situations: 　　(1) ...

Monday, November 9th, 2009 at 01:31 | No comments

Categories: Embedded system

Tags: C, Embedded system

Short Content:           Chinese character processing 　　Must solve the question is, in the embedded system must use frequently is the complete Chinese character storehouse by no means that often is only needs to provide the quantity limited Chinese character to supply the essential demonstration function. For example, on microwave oven's LCD is not unnecessary provides demonstrates " the email " the function; Provides the Chinese character to demonstrate that the function on air conditioning's LCD does not need to demonstrate one ...

Sunday, November 8th, 2009 at 23:39 | No comments

Categories: Embedded system

Tags: C, Embedded system

Short Content:          Processing functional key 　　The functional key question lies, the user interface is by no means fixed, the user functional key's choice will cause the screen picture to be under the different display status. For example, main picture like chart 1: omit image. Figure 1 main picture 　　When user after establishing on XX presses down the Enter key, the picture cuts has established XX contact surface, like Figure 2: omit image. Figure 2 cuts establishes XX picture 　　How does the procedure ...

Sunday, November 8th, 2009 at 22:37 | No comments

Categories: Embedded system

Tags: C, Embedded system

Short Content:          Uses the great definition 　　In the C language, great is produces inlays the code the only method. Speaking of the embedded system, for can achieve the performance requirement, great is one kind very good replaces the function the method. 　　Writes one " the standard " great MIN, this great inputs two parameters and returns to small one: 　　Wrong procedure: #define MIN(A, B) (A

Friday, April 3rd, 2009 at 00:08 | No comments

Categories: Power Supply

Tags: ARM nucleus, Embedded system, Single power source

Short Content: Along with the electrocardiogram technology's clinical practice and electronic technology's development, the electrocardiogram takes in the biomedicine survey an item to be mature, the application widespread technology, has become one kind of conventional clinical examination gradually the method, and in heart aspects and so on disease's diagnosis, guardianship as well as drug efficacy analysis is playing the very vital role. At present commonly used heart electricity examination electric circuit many for double power source power supply, this kind of plan ...

Wednesday, November 19th, 2008 at 05:12 | No comments

Categories: Communication Networks

Tags: Embedded system, local area network, real-time monitoring

Short Content: Abstract: This article proposed one kind of network video frequency supervisory system, the monolithic integrated circuit control technology, the USB data acquisition technology with based on the TCP/IP agreement stack's computer network structure organic synthesis, enables the people through to monitor video frequency audio frequency capture equipment and so on scene camera and microphone, will monitor the scene the signal through the local area network transmission, and delivers on the monitoring device to obtain the real-time image and the sound, ...

Tuesday, November 18th, 2008 at 22:32 | No comments

Categories: Communication Networks

Tags: Embedded system, GPRS, imagery processing, S3C2410, Sensor

Short Content: Abstract: This article based on ARM9 the series three star S3C2410 processor, studied and succeeds has trial produced one kind of network type automobile burglary protection system. The system using the sensor technology, the imagery processing technology and the GPRS network superiority, has realized effectively to automobile's long-distance image monitoring function, enhanced the automobile burglary protection system's reliability.Key word: Embedded system; S3C2410; Sensor; Imagery processing; GPRSIntroductionAutomobile's popularization has brought conveniently for people's life, simultaneously also proposed to the people a ...

Saturday, November 8th, 2008 at 18:09 | No comments

Categories: DSP

Tags: DSP, Embedded system, image gathering, imagery processing

Short Content: The abstract uses TI Corporation's TMS320C6713, through address decoding and main line isolation, directly the digital image sensor chip OV7620 turning on; Using EDMA independent transmission characteristic, in does not increase the DSP software overhead and in the situation which takes to the main line, realizes video image real-time gathering and processing. After the confirmation, the system has timeliness to be good, the cost is low, development cycle short characteristic. Saved through the main line isolation and the data lock ...