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Based on CPLD USB downloading electric cable design
Sunday, November 30th, 2008 at 00:55 | No commentsCategories: EDA/PLDShort Content: How does the abstract discuss designs, manufactures one kind to plant electric cable - - USB-blaster under the low cost usB data which QHattusII under the programer environment uses. According to the IEEEll49.1 standard, the USB agreement as well as the JTAG boundary scan principle, through analyzes the QuartusII internal communication mechanism, uses the USB chip and the CPLD union, proposed that one kind of USB interface circuit design with realizes the method. With traditional and the mouth, the serial ... -
C8051F005 monolithic integrated circuit’s proportion electro-magnet control technology
Thursday, November 27th, 2008 at 13:42 | No commentsCategories: SCMShort Content: In the abstract automatic control system, the proportion electro-magnet which controls by the microprocessor takes actuator's application to be getting more and more widespread. This design is one interface circuit which controls by the C8051F005 monolithic integrated circuit, uses the PWM technology to carry on the control to the proportion electro-magnet; Simple practical, can satisfy in the automatic control system actuator's control precision high, to respond the quick request, has certain use value.The key word C805lF005 proportion electro-magnet controls PWM ... -
From LCD electrode reading monolithic integrated circuit connection technology
Wednesday, November 26th, 2008 at 02:19 | No commentsCategories: SCMTags: interface circuit, LCDShort Content: In abstract measuring instrument common when divides the actuation law actuation Duan Shi the LCD monitor is an example, analyzes the LCD monitor's electrode connection structure and the driving signal profile; Introduces the monolithic integrated circuit read measuring appliance LCD reading the interface circuit. This interface circuit applies the automatic blood pressure which develops in the author monitors in meter's development and the clinical practice project, reads when sphygmomanometer's systolic pressure, the diastolic pressure, the heart rate as well as ... -
Based on AT89C51RC computer key peripheral circuit design
Tuesday, November 25th, 2008 at 20:52 | No commentsCategories: SCMTags: computer key, interface circuitShort Content: The abstract computer key has the operation ticket browsing, the execution, the feedback, the voice prompt, the lock code examination and functions and so on power failure data memory protection, can realize each kind of block system unblanking and the examination. This article develops the platform take at89C51RC series monolithic integrated circuit as the hardware, elaborates the computer key's principle of work and gives the corresponding periphery interface circuit.Key word computer key circuit design AT89C5lRC The microcomputer against harms ... -
One kind based on A/D and DSP high speed data gathering technology
Tuesday, November 11th, 2008 at 07:16 | No commentsCategories: DSPShort Content: The abstract radar receiver turns the radar echo signal the intermediate frequency signal, the digital signal processing system to the intermediate frequency signal sampling and processing. This article introduces one kind based on A/D and the DSP intermediate frequency signal gathering technology; Gives data acquisition system's principle and the diagram, and carries on the analysis to A/D and the DSP interface circuit. Takes between both's connection effect with FIFO to be very good; DSP carries on the control through CPLD ...
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