- Describe several ways computers play a critical role in modern life
- Discuss the circumstances and ideas that led to the development of the modern computer
- Describe several trends in the evolution of modern computers
- Explain the relationship between hardware and software
- Outline the five major types of computers and describe their principal uses
- Describe how the explosive growth of the Internet is changing the way people use computers and information in technology
- Explain how today's information age differs from other times in history and prehistory
- Discuss the social and ethical impact of information technology on our society
Creating Communities on the Living Web
- Myspace creates an online community experience for young people
- Flickr creates a community for people to share their pictures
Living in a Non-Digital World
- Computers are no longer a luxury but rather a commodity
- Computers and their applications are used in all aspects
Computers in Perspective
- Every computer is use today follows the basic plan laid out by Charles Babbage and Lady Lovelace
- The computer is a very versatile tool
>It can compute taxes or deploy a missile
- All computers take in information called input and give out information called output
- Versatility is built upon its hardware and software
- 1939: Konrad Zuse completed the first programmable computer
- 1949: Alan Turing and others completed Colossus, the first electronic digital computer
- 1944: One million dollar grant from IBM grants Harvard professor Howard Aiken the Mark 1
- John Mauchly and J. Presper Eckert helped the U.S effot in World War II by constructing a machine to calculate trajectory tables for new guns
- After the war, Mauchly and Eckert started a private company called Sperry and created UNIVAC I, the first general-purpose commercial computer
>Vaccum tubes were used in early computers
>Transistors replaced vaccum tubes starting in 1956
>By the mid-1960s transistors were replaced by integrated circuits
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