This document discusses the purposes of different types of computer systems. Laptops allow for internet access and computer use on the go. Tablets are similar to mobile phones with touch screens and adapted desktop software. Games consoles are for playing games, DVDs, and CDs. Mobile phones are primarily for communication through calling, texting, games, and internet use. PDAs are for calendars, emails, and scheduling. Netbooks are similar to laptops. Servers store files, applications, and provide web access for backup. Base units remain stationary and can backup data for multiple users like laptops.