A computer is a special kind of machine that can do lots of different things when you tell it what to do. It's like a really smart tool that people made using electricity. The computer is a pretty new thing and it's really helpful. It can do things that our brains can do, but sometimes even faster and better. People use computers to do very hard work in different subjects. In just a short time, a computer can do math problems that would take smart math experts years to finish. The fastest computers are super quick and can solve lots of problems in just a few moments. They can do many tasks at once without getting mixed up.
Nowadays, computers have become very fancy and can be used for many things. They help in places like factories, banks, offices, hospitals, labs, schools, and colleges. They can help businesses, play chess, and even make music. Computers have really helped us a lot. They've made our society much better and have brought big changes to our lives.