There are ways to use one computer in a classroom and a slew of them in a computer lab. But they are different. Tailor your assignments accordingly. If there's one in the class room, several can group around it and deal with text on-line. This can be good for collaborative work on a file, making revision suggestions, or just pointing to aspects of a text and talking about it.
Knowledgeable students can teach less experienced ones the subtleties of search and research.
With more computers, you can engage the whole class in projects.