We describe a totally computerized system that facilitates the recording, organizing, and storing of data gathered during a large almond breeding program. A portable PSION Organizer II (PSION PLC, London) microcomputer (CMOS 6303X microprocessor, 32 K RAM, 32 K ROM, 12 to 128 K EPROM) was used for entry of data directly in the field or in the laboratory. A COMMS-LINK (PSION PLC) software, written for the PSION, was used for interfacing the portable microcomputer to PC, running MS-DOS. PSION Organizer II uses programs written in the OPL language. This program will not run in other devices. Twenty-three characteristics of 2518 seedling were tracked and evaluated according to international norms (Gulcan, 1985). To facilitate the recording of data, nine separate programs in OPL language were written, all displaying the number of the tree being examined and the characteristic being evaluated. The programs are: 1) Flowering: Displays the Julian day of the year and prompts the operator to record the initial day of flowering (IF). This part