The paper describes the type of computer access products appropriate for use by handicapped children and presents a systematic procedure for selection of such input and output devices. Modification of computer input is accomplished by three strategies: modifying the keyboard, adding alternative keyboards, and attaching switches to the keyboard. Popular products for modifying the keyboard are keyguards, keylocks, and repeat defeats. Alternative keyboards may be either transparent (allows use of standard software--e.g., "Unicorn Expanded Keyboard,""Mini-Membrane Keyboard,""Mini-Keyboard," and non-transparent (requires specially designed software--e.g., "Muppet Learning Keys,""Power Pad,""TouchWindow"). Attached switches are appropriate for students for whom the previous modifications are not sufficient. Products include "Ablenet Switch 100,""Lever Switch,""P-Switch," and "Tread Switch." The preferred output strategy maintains the monitor and printer as the primary visual output device. If this is not feasible, speech synthesis should be considered. (DB)