This chapter introduces basic computer concepts including defining a computer, its components, advantages and disadvantages of use, networks and the internet, types of software, categories of computers, and examples of computer applications in society. It discusses how computers process data into information, the input and output devices, storage, and main components including the processor and memory. Networks and servers are described as well as system and application software. Personal computers, mobile devices, game consoles, and different types of servers and computers are outlined. Common computer users and their needs are identified.