Everything which contains a microchip [1] is a computer, and you used it (or: 'it was used on you') with an echoscope around when you were in womb for around 20 weeks. Computers are everywhere, and it matters in this context: some minister saying they never used a computer (any computer) is something which is so unlikely (I mean, even a traffic light contains a computer) that it matters how it gets (strictly) defined. Nowadays, it is even more complex, given smartphones, smartTVs, laptops being used on elementary school, etc.
[1] https://www.asml.com/en/technology/all-about-microchips/micr...