Unlike laptops and tablets, desktop computers don’t come with everything you need built in. Aside from the main computer, in order to use a desktop computer, you will need a monitor, keyboard, and mouse. If you want to play sounds or listen to music or movies, you will also need speakers. For video conferencing, you will need a separate webcam. Most of these peripherals are included with computer sets sold at electronic stores, but you can also purchase them separately to customize your computing experience.