Parts in a Computer are the CPU (Central Prossesing Unit), RAM (Random Access Memory), SSD's (Solid State Drives) or Hard Drives, Motherboard, Case, Power Supply, and GPU (Graphics Processing Unit/Graphics Card).
Operating System's used in computers are Microsoft's Windows, Linux, macOS, Android, and much more.
For a laptop it has a display a built in mouse and keyboard. For a desktop you need a Monitor/TV/Display, a keyboard, a house, or headphones if there isn't speakers.
You can do a lot of things on a computer. On a computer you can watch video, play games, do work, use different websites, use different programs you downloaded, talk to people, and etc. Computer are used for jobs too. Computers and used to program and to be used to make webpages, apps, and other things that get coded. Computers are an interesing thing that been invented and it has a lot of features.
Companies that invent computers are HP, Lenovo, Dell, Apple, Asus, Acer, Samsung, MSI, and etc.
