主要特點  

　◇ 32 TTL-level digital input channels

　◇ 32 TTL-level digital output channels

　◇ High-output driving capacity

　◇ Low-input loading

　◇ 3 programmable counter/timer channels

　◇ User configurable clock source

　◇ Breadboard area for custom circuits

  　內(nèi)容介紹   　　The PCL-720+ and PCI-1735U digital I/O and counter cards are PC-compatible add-on cards with 32 digital input channels, 32 digital output channels and three programmable counter/timer channels. Their digital I/O channels are TTL-compatible and use 74LS244 driver/buffer circuits to provide high output driving capacity. These buffered circuits also require lower input loading current than regular TTL circuits. The cards' 8254 programmable counter/timer provides three flexible 16-bit counter/timer channels. You can generate waves and pulses by programming the 8254. Jumper settings determine the clock crystal frequency. The cards also includes a breadboard area perfect for customized circuits.   　訂購信息

產(chǎn)品序號	內(nèi)容	價格 數(shù)量
PCI-1735U-AE	64ch TTL Digital I/O Card w/Counter	請來電詢價