Measurement Computing USB-1024LS - Manual (Page 6)

Chapter 1
Introducing the USB-1024LS
This user's guide contains all of the information you need to connect the USB-1024LS measurement and
automation device to your computer and to other data acquisition hardware.
The USB-DIO24/37 is a USB 1.1 low-speed module supported under popular Microsoft ® Windows ® operating
systems. It is designed for USB 1.1 ports, and was tested for full compatibility with both USB 1.1 and USB 2.0
ports.
The USB-1024LS features 24 bits of digital I/O and one 32-bit external event counter. The device is powered
by the +5 volt USB supply. No external power is required.
An on-board industry standard 82C55 programmable peripheral interface chip provides the 24 discrete digital
I/O lines in four ports. You can configure each digital port independently for either input or output.
The USB-1024LS USB device is shown in Figure 1-1. All I/O connections are made to the screw terminals
located along each side of the USB-1024LS.
Figure 1-1. USB-1024LS
1-1