Why we use computer?As an easier resource to things such as, communication. Through all types of communication (via internet) we can advertise, sell, chat, phone calls, location to location and many other things. Computers also are an easy solution for drawing up plans/data instead of by hand.

My computer serves as an entire library at my fingertips. Just about everything I want to know about, I can find something about on my computer. When someone tells me something or hear something on TV (or asks a question on Answers.com) that makes me wonder, hmm... I just look it up and see what facts and information I can find about it. I can usually find what I need pretty fast, and no dusty books to handle.

Why we need it?Information technology (IT) is concerned with technology to treat information. The acquisition, processing, storage and dissemination of vocal, pictorial, textual and numerical information by a microelectronics-based combination of computing and telecommunications are its main fields. The term in its modern sense first appeared in a 1958 article published in the Harvard Business Review, in which authors Leavitt and Whisler commented that "the new technology does not yet have a single established name. We shall call it information technology (IT).Some of the modern and emerging fields of Information technology are next generation web technologies, bioinformatics, cloud computing, global information systems, large scale knowledgebases, etc. Advancements are mainly driven in the field of computer science.