  Over its more than thirty-year history, the Advanced Technologies and
Instrumentation (ATI) program has provided grants to support technology
development for ground-based astronomy. Research from this program has advanced
adaptive optics, high resolution and multi-object spectroscopy, optical
interferometry and synoptic surveys, to name just a few. Previous and ongoing
scientific advances span the entire field of astronomy, from studies of the Sun
to the distant universe. Through a combination of literature assessment and
individual case studies, we present a survey of ATI funded research for
optical-infrared astronomy. We find that technology development unfolds over a
time period that is longer than an individual grant. A longitudinal perspective
shows that substantial scientific gains have resulted from investments in
technology.
