All dishwashers are in some way electronic. Even the most basic dishwasher uses a motor to generate the necessary force for spinning its blades and spreading water while it works. These dishwashers also tend to have basic valves and even temperature sensors that use electricity and circuitry to operate. However, they are also limited in their features and run on timers that can only be set for a certain amount of time, not a specific temperature or type of washing.
The timer only allows one type of dishwashing, but you can still adjust it to wash for different lengths of time, which helps when you want to wash pots and pans rather than plates. A simple electronic dishwasher also costs less than a more modern, computerized version. However, you do lose some flexibility with such a basic system, and these dishwashers are not able to diagnose problems in case of a failure.
A computerized dishwasher comes with a panel that allows you to make your own adjustments to the process. You may be able to choose washing types, water temperatures and other specifics for the dishwasher cycle. This allows you to customize an option that works best for what you are washing. The computerized version may also be able to flash LED warnings, timer information and failure codes.
A computer-based dishwasher has more circuitry and sensors, which means it will both cost more and have a greater number of parts that can malfunction. However, it is a useful system for washing many types of dishes made from different materials and with different levels of quality. If you only wash a few basic types of dishes in the dishwasher, you may not want to spend the extra money this option would require.