We have seen an emergence of quantum-computing activity in recent years from an uptick of startups to investments at established companies. Yet, there is more to quantum systems than simply computing. In fact, quantum systems by themselves do not work, and classical electronics are needed to interface with quantum devices. In this forum, we look at electronics, in particular CMOS electronics, for use in combination with quantum devices from the designer’s perspective. We explore these systems from specifications to testing, often at cryogenic temperatures, and discuss recent successes and future trends.