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产品简介：
PRA-712DG它能够为PC/AT及其兼容系统提供五种最需要的测量与控制功能。这些功能包括：A/D转换，D/A转换，数字量输入，数字量输出及计数器/定时其功能。该卡提供16路12位模拟量输出，2路12位模拟量输出，16路数字输入，16路数字输出和一个可编程计数器/定时器。
Product Introduction:
The PRA-712DG is a multifunction analog and digital I/O card that features the five most desired measurement and control functions for PC/AT and compatible systems: A/D conversion, D/A conversion, digital input, digital output and counter/timer. This half-size card neatly packages 16 12-bit analog input channels, two 12-bit analog output channels, 16 digital input channels, 16 digital output channels and a programmable counter/timer
性能特点 Main features:
* 16路单端12位模拟量输入
16 single-ended 12-bit analog input channels
* 2路12位模拟量输出
Two 12-bit analog output channels
* 采样速率可编程，最快达30KHz
Programmable sampling rate of up to 30 kHz
* 带DMA或中断的A/D
A/D with DMA or interrupt
* 16路数字量输出
16 digital input channels
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