![Digital I / O modules](https://d27wgn5g4t3wja.cloudfront.net/img/2c577ec1-9be1-a2db-e62a-adf6e9109061/242419.png)
Digital I / O modules
The 34950A module has 64-bit bi-directional lines and can be configured with 8 8-bit digital I / O channels with handshaking capability. Each 8-bit channel has programmable polarity and a threshold of up to 5V. The memory can be used to generate or capture digital patterns up to 10 MHz. It provides seven configurable handshaking protocols for a wide range of applications. In addition, two counter / totalizer channels can be used to compute events, frequency, period, duty cycle, accumulation, and pulse width.