The revised Czech national computing curriculum for grades 6-9 entails the topic of how digital devices work. Up to date materials for teaching this topic are lacking in the Czech context.
Our goal is to create such materials. As a first step, we mapped preconceptions of children from grades 6-9 about how a digital devices work and what hardware parts they comprise of (N = 53, semi-structured interviews).
Preliminary analysis uncovered some preconceptions not discovered by existing literature. This poster presents these preconceptions.