1.2 THE HISTORY

 

• Late 50’s

- Bell introduces data communication networks

- Texaco uses remote monitoring and control for automating polymerization plant.

• Early 60’s

- World wide use of data phone system to link airports for maintenance

- Many uses of terminals for inputting and displaying data.

• Mid 60’s

- Uses of computer for large scale test monitoring

- NC part programming being done remotely on time sharing mainframes.

• 70’s

- Advent of Mini computers made it possible for companies to have multiple computers which had to communicate.

• 80’s

- Microprocessor drops cost of computers dramatically, and automated machines become very common

- Personal computers, and automated machinery start a trend to network small computers networked with large computers

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