I often read e-books.

He decided to quit smoking electronic cigarettes.

I bought a coffee using electronic money.

This is my unused camera.

I analyze data using a spreadsheet software.

Computational linguistics is the study of analyzing human language with computers.

The space complexity of this algorithm is O(n).

The time complexity of this algorithm is O(n).

Computational geometry is an important field of computer science.

There is a state-of-the-art electron microscope in my laboratory.