First, let’s clear up a common misunderstanding: the CMOS chip and the CMOS battery are two different things. CMOS is a ...

Our number one pick for the best laptop of 2025 remains the Apple MacBook Air 13-inch (M4), which because of its excellent performance, premium design and long battery life has yet to be beaten.

CMOS stands for Complementary Metal Oxide Semiconductor. Even though it’s a small chip on your motherboard, it does a lot more than you might expect. First, let’s clear up a common misunderstanding: ...