According to the official Scratch website, the system requirements for Scratch Jr. Desktop are:
Operating System:
Processor:
Memory:
Graphics:
Storage:
Display:
It's worth noting that Scratch Jr. is designed to be a lightweight and accessible programming environment, so it can run on older hardware as well. However, meeting the recommended system requirements will ensure the best possible experience.
If you're unsure about your computer's specifications or have any concerns, I recommend checking with Apple Support (for macOS) or Microsoft Support (for Windows) for further guidance.