Agricultural research often involves collecting numerical data in the field, orechard or greenhouse. Traditionally, horticulturists have recorded numerical data by hand and then manually entered the information into a computer or calculator for statistical analysis. In the last decade data loggers and portable computers have made data collection and analysis easier and more efficient. A palmtop computer is a small, lightweight instrument that combines the best characteristics of data loggers and portable computers. In our trial, palmtop computers equipped with a spreadsheet software program were ideal for numerical data entry in the field and were a cost-effective alternative to other devices.