Computer access was studied with children between the ages of 6 months and 18 months with no known handicapping conditions. The research focused on determining at what age young children can access a computer using a single-switch system to run a simple cause-and-effect program. The sample consisted of 80 children divided into four groups (6 to 8 months, 9 to 11 months, 12 to 14 months, and 15 to 17 months). Results demonstrated that some children as young as 6 months of age could control a computer-based, cause-and-effect program using a single-switch access system. Therefore, professionals who work with children with disabilities may consider introducing computers to children at this age or to children who are functioning near this cognitive developmental level.