I work with computers, but telling people what I do has always been very tricky. They won't understand it anyway.
As another comment said - in Europe it's not that common to ask what people work with. It's definitely not the first thing people ask. It comes much later, if at all. Fortunately. I got so fed up of trying to explain what I did that I started to reply "I'm a carpenter", if anyone asked.
People don't asks questions on what's a carpenter doing because the very abstract notion of the job they have is enough for them, whereas they have actually no idea how the jobs is done, and certainly none of its technical aspects.
Strip down any technical aspect of your daily job to figure out its actual social function. It has one. Whatever it is it'll help you figure out how telling what's your job to people, and even maybe to yourself.
But it’s an honest answer. And if the honest answer about someone’s own job makes them uncomfortable, it’s time to consider looking for something different.
As another comment said - in Europe it's not that common to ask what people work with. It's definitely not the first thing people ask. It comes much later, if at all. Fortunately. I got so fed up of trying to explain what I did that I started to reply "I'm a carpenter", if anyone asked.