Introduction to the Computer What makes up a computer?

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Presentation transcript:

Introduction to the Computer What makes up a computer?

Objectives 1. Define a computer. 2. Discuss the characteristics of a computer. 3. Distinguish the major types of computers. 4. Explain the IPOS Cycle.

What is a Computer? Computer ProducesProcesses Stores Accepts Instructions

The Computer... Is a programmable machine. Responds to a set of instructions. Runs or performs a program. Hardware – Hardware – is the actual machinery Software – Software – is the instructions and data

Characteristics Fast Reliable Storage Stupid Literate Electronic

Characteristics Threat to personal privacy Nerve Injuries Failures do occur May displace workers

Classifications of Computers TYPE PURPOSE USE SIZE Tower Model Desktop Model Digital Special or General Word Processor Home Computer Laptop Workstation Mini- computer Mainframe PC

Classification by size... Workstation Minicomputer A powerful, single-user computer with a more powerful microprocessor and a higher-quality monitor than a personal computer. A multi-user computer capable of supporting from 10 to hundreds of users simultaneously.

Classification by size... Mainframe Personal Computer (PC) A powerful, multi-user computer capable of supporting many hundreds or thousands of users simultaneously. A small, single-user computer based on a microprocessor.

5 Elements of Computing Hardware Software Data People Procedures

Four Stages of Computing O S Output Information displayed on a monitor or printed out Storage Saves results to a computer’s hard drive or other types of secondary storage (optional) P Processing Actions taking upon/using input or stored material I Input Information, ideas, or resources used IPOS Cycle

Daily Usage of Computers ►ATM Machines ►Business Management ►Communications ►Schools ►Offices ►Internet ►Homes ►Sales What other uses can you think of?