Final answer:
The irony in the text is that Bill Gates, the wealthy co-founder of Microsoft, won an expensive computer system, which is a prize he likely does not need given his background and access to technology.
Step-by-step explanation:
The irony in the text is that Bill Gates, a man known for co-founding Microsoft and being consistently ranked among the world's wealthiest people, won a contest for an expensive computer system. Considering his substantial wealth and his significant contributions to the tech world, the fact that he won such a prize when he likely already has access to the best technology is an example of situational irony. This is especially ironic as he spends his time now with his focus on philanthropic efforts through the Bill & Melinda Gates Foundation, aiming to improve health and education around the world, rather than accumulating more tech gadgets.