Count Jim Hirsch among the supporters of DLP technology. Hirsch, the chief information officer for the Plano Independent School District in Texas, estimates his district has saved between $700 and $1,000 per unit over the lifetime of the machines by purchasing DLP projectors.

"We began our large-scale installation of DLP projectors in the summer of 2001," he said. "Prior to that time, we had approximately 200 LCD projectors in use across the district, and we were experiencing a life expectancy of about three years before the color shifting got to a point where their usability was questionable."

Hirsch added: "We currently have


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