Usage and Grammar

Q. My colleagues are divided in their opinions about “storing data in a computer” versus “storing data on a computer.” Which is correct? Thanks.

A. You can do either, but I would store the data in the computer. It used to be easy to store stuff on a computer, but now with flat screens and laptops it tends to slide off.

[This answer relies on the 18th edition of CMOS (2024) unless otherwise noted.]