1990s: The Third Generation

Decade of

the Point-Tool

Decade of

Integration

1970's

1980's

Decade of

Task-Oriented

Interfaces?

(ease-of-use)

1990's

1960's

General-Purpose

Computing

Electronic CAE

Single Program

Emphasis

Multiple Programs

Communicating

(e.g. Unix, "tools")

Task-Oriented

Computing

(e.g. MAC UI, Spreadsheet)

DAC Tutorial, 1992

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