National Instruments provides a complete family of digital I/O products, with various timing, voltage and isolation options. Whether generating patterns to characterize a custom circuit, toggling control lines to automate a factory floor, or prototyping a digital design, NI digital I/O devices can meet the needs of your test, control, and design applications.
Learn how to use the built-in counters and digital I/O on USB data acquisition devices.
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Learn about NI digital I/O for PCI Express and PXI Express
Compare pricing and specs
Learn how to perform real-time bit error rate calculation with NI 655x devices
Watch the webcast8 Solid-State Relays, 8 DI, Counter, Ch-to-Ch Isolated
Features | Specifications | Data Sheet
$ 319
| Digital I/O: | 8 DI/8 DO |
| Counter/Timers: | 1 · 32 bits · 5 kHz |
| Measurement Type: | Digital |
Industrial Digital l/O - 24 Input, 24 Output, Channel-Channel Isolated
Features | Specifications | Data Sheet
$ 719
| Digital I/O: | 24 DI/24 DO |
| Measurement Type: | Digital |
Low-Cost 37-Pin Industrial Digital I/O -- 30 V, Bank-Isolated
Features | Specifications | Data Sheet
$ 319
| Digital I/O: | 16 DI/16 DO |
| Measurement Type: | Digital |
R Series Digital RIO with Virtex-II 3M Gate FPGA
Features | Specifications | Data Sheet
$ 2,649
| Digital I/O: | 160 DIO · 40 MHz |
| Counter/Timers: | 160 · 64 bits · 40 MHz |
| Measurement Type: | Digital, Filters, Frequency, Quadrature encoder |
High-Density Industrial Digital I/O for USB (96 Ch, 24 mA)
Features | Specifications | Data Sheet
$ 449
| Digital I/O: | 96 DIO |
| Measurement Type: | Digital |
Industrial Digital I/O - 48 Inputs, Channel-Channel Isolated
Features | Specifications | Data Sheet
$ 719
| Digital I/O: | 48 DI |
| Measurement Type: | Digital |
R Series Digital RIO with Virtex-II 1M Gate FPGA
Features | Specifications | Data Sheet
$ 1,549
| Digital I/O: | 160 DIO · 40 MHz |
| Counter/Timers: | 160 · 64 bits · 40 MHz |
| Measurement Type: | Digital |
R Series Digital RIO with Virtex-II 3M Gate FPGA
Features | Specifications | Data Sheet
$ 2,449
| Digital I/O: | 160 DIO · 40 MHz |
| Counter/Timers: | 160 · 64 bits · 40 MHz |
| Measurement Type: | Digital |
R Series Digital RIO with Virtex-II 1M Gate FPGA
Features | Specifications | Data Sheet
$ 1,649
| Digital I/O: | 160 DIO · 40 MHz |
| Counter/Timers: | 160 · 64 bits · 40 MHz |
| Measurement Type: | Digital, Filters, Frequency, Quadrature encoder |
Low-Cost USB Digital I/O Device
Features | Specifications | Data Sheet
$ 99
| Digital I/O: | 24 DIO |
| Counter/Timers: | 1 · 32 bits · 5 MHz |
| Measurement Type: | Digital |