Description: 声卡数字频率计 PC中的声卡不仅能输出和录制各种音频信号，利用其内部的A/D（模拟/数字）转换器，通过编写程序还可以用来对外部的周期性的模拟信号进行采样，并计算出该信号的频率值。文中所述的作者设计的程序就是这样的一种程序，能够满足一般电子爱好者把PC作为数字频率计使用的要求。该程序是标准的Windows界面，界面友好，以黑色背景红色大号字体显示频率值，具有醒目、程序简洁和测量精度高的特点，-sound card number or frequency of PC sound card can not only output and recording audio signals, use its internal A/D (analog/digital) converter, through the preparation process could also be used to the cyclical external analog signal is sampled, and the calculated value of the frequency signal. Wen described the author of the design process is one of the procedures, to meet the general electronic enthusiasts use the PC as a digital frequency meter use requirements. The procedure is the standard Windows interface, the interface is friendly to the black background of red font tuba frequency, with catchy and simple procedures and high measurement accuracy characteristics, Platform: |
Size: 39936 |
Author:gemini |
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Description: 在集成电路中，通常采用T型解码网络实现数字量往模拟的转换，再利用运算放大器完成模拟电流变为模拟电压的转换。所以，要把一个数字量变为模拟电压，实际上需要两个环节，先把数字量变为模拟电流，这是由D/A转换器完成的；再将模拟电流变成模拟电压，这是由运算放大器完成的。有时D/A转换器芯片只包含前一个环节，有些D/A转换器则包含两个环节，用前一种芯片时，需要外接运算放大器才能得到模拟电压。-In integrated circuits, the usual T-decode digital networks to analog conversion, and then complete the simulation of the use of op-amp current into the analog voltage conversion. Therefore, it is necessary to become a digital simulation of voltage, in fact, need two links, first into a digital simulation of currents, this is determined by D/A converters completed then simulate current into the analog voltage, this is determined by computing completed amplifier. Sometimes D/A converter chip contains only a part before, some D/A converter includes two aspects, before a chip, the need for external op-amp voltage can be simulated. Platform: |
Size: 114688 |
Author:GFQ |
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Description: TLC5615读写代码，c51语言，单片机设计开发，D/A转换用程序-TLC5615 to read and write code, c51 language, single-chip design and development, D/A converter with program Platform: |
Size: 18432 |
Author:李明 |
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Description: 通信数字传输系统各部分仿真程序，包括调制、解调、A/D转换、D/A转换、信道传输、抽样判决等-Communications system to digital transmission simulation program, including modulation, demodulation, A/D converter, D/A conversion, channel transmission, a sample of sentences Platform: |
Size: 1024 |
Author:李晓静 |
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Description: 这是一个汽车压力检测系统，利用RS232串口进行通信，并在可编程并行接口芯片8255A上进行编程，用到了查询方式A/D转换器接口电路及数据采集程序设计原理等-This is a car pressure detection system, using RS232 serial communications and programmable parallel interface 8255A programmable chips, used in the query mode A/D converter interface circuit and data acquisition procedures, such as design principles Platform: |
Size: 3857408 |
Author:方允福 |
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Description: A/D转换的硬件电路及它的程序，用C语言和汇编语言-A/D conversion hardware circuit and its procedures, using C language and assembly language Platform: |
Size: 102400 |
Author:段乐娜 |
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Description: 描述了一个8位二进制输入的DAC
文章中包含源代码
采用数字化技术、在测控系统中用IP核实现D/A转换，并且在1片可编程逻辑器件中实现。它不受温度的影响，既可保持高分辨率，又可降低对电路精度和稳定度的要求，并减少元件的数量。
-Described an 8-bit binary DAC input article contains the source code using digital technology, in measurement and control system using the IP of nuclear realize D/A converter, and a programmable logic device to achieve. It is not the effects of temperature, can maintain high resolution, can reduce the circuit accuracy and stability requirements, and to reduce the component count. Platform: |
Size: 38912 |
Author:开心 |
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Description: THPLC-D型变频器调试说明
1、THPLC-D是在THPLC-C的基础上升级开发的，其主要区别是：变频器控制电机部分取代了继电器控制电机部分。其它的没有变动，所以大部分程序都沿用了THPLC-C的程序，只是添加开发了变频器的样例程序。
2、变频器的样例程序存放在bianpintontxun文件夹里，运行GPPW.GSP即可！其它的相同的程序制作备份 用。其中 bianpintontxun.RAR 里面的程序比较好用。
-THPLC-D type converter debugging note 1, THPLC-D is THPLC-C based on the escalation of development, the main difference is: inverter motor control have replaced part of the electrical relay control. No other changes, most procedures are followed THPLC-C procedure, just add the sample developed a converter program. 2, converter sample program stored in bianpintontxun folder, run GPPW.GSP can! Other the same procedure used to back up. Bianpintontxun.RAR one inside-to-use procedures. Platform: |
Size: 56320 |
Author:xiaoyu |
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Description: TLC548和TLC549是以8位开关电容逐次逼近A/D转换器为基础而构造的CMOS A/D转换器。它们设
计成能通过3态数据输出和模拟输入与微处理器或外围设备串行接口。TLC548和TLC549仅用输入/输出时
钟（I/O CLOCK） 和芯片选择（CS） 输入作数据控制。TLC548的最高I/O CLOCK输入频率为2.048MHz，
而TLC549的I/O CLOCK输入频率最高可达1.1MHz。 有关与大多数通用微处理器接口的详细资料已由工厂
准备好，可供使用。-TLC548 and TLC549 are 8-bit switched capacitor successive approximation A/D converter and the basic structure for CMOS A/D converter. They are designed through the 3-state data output and analog input and a microprocessor or peripheral device serial interface. TLC548 and TLC549 only input/output clock (I/O CLOCK) and chip select (CS) input for data control. TLC548 maximum I/O CLOCK input frequency of 2.048MHz, and TLC549 the I/O CLOCK input frequency up to 1.1MHz. With the most common microprocessor interface details from the factory ready availability. Platform: |
Size: 711680 |
Author:ysy593 |
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Description: ti dac900,高性能D/A转换芯片,很好的片子，大家可以看一下-The DAC900 is a high-speed, Digital-to-Analog Converter (DAC)
offering a 10-bit resolution option within the SpeedPlus family of
high-performance converters. Featuring pin compatibility among
family members, the DAC908, DAC902, and DAC904 provide a
component selection option to an 8-, 12-, and 14-bit resolution,
respectively. Platform: |
Size: 586752 |
Author:www |
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Description: CS8955控制TV软件。用MCU做模拟电视的控制。-CS8955+TV+TNJ7355(tuner).The CS8955 micro-controller is an 8051 CPU core
embedded device targeted for LCD Monitor, LCD TV,
Home Appliance, or Consumer Products application.
The CS8955 is pin-out compatible with MCS-51
family .MCU. It includes an 8051 CPU core, a 64K-byte
internal program Flash-ROM, a 512-byte SRAM, 6
channels of PWM DAC, and 4 channels of 6-bit ADC
(Analog to Digital Converter). It also includes a Boot-
Code-Free ISP (In System Programming), which
allows users to update the programming codes easily.
In addition, there are two IIC Slave B ports supporting
VESA DDC 2B/2Bi/2B+/CI standards for both D-sub
and DVI interfaces in LCD Monitor/TV application. An
external 64K bytes data flash memory can be
accessed by properly setting of Port 0, Port 2 and
Port 3.6/3.7.
Platform: |
Size: 578560 |
Author:martinliao |
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Description: design and implementation of a format conversion system on the Altera NIOS board(QUARTUS) which reads an analogue input, converts it into digital data, and then does the reverse conversion back into analogue format. This will be done by taking an analogue an analogue input using SPI MCP3202 12-Bit A/D converter to generate the digital data stream and then the digital data will be used to generate an analogue output using Analog Devices 8-bit SPI AD7303 D/A converter. Platform: |
Size: 1398784 |
Author:ak |
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Description: 1、D/A转换是把数字量转换成模拟量的变换，实验台上D/A电路输出的是模拟电压信号。要实现实验要求，比较简单的方法是产生三个波形的表格，然后通过查表来实现波形显示。
2、产生锯齿波和三角波-1, D/A converter is to convert the digital analog conversion, the experimental stage D/A circuit is an analog voltage output signal. To achieve the requirement of experiment, a relatively simple method is to generate three waveform table, and then look-up table to achieve the waveform display.
2, resulting in sawtooth wave and triangular wave Platform: |
Size: 29696 |
Author:范志豪 |
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