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# Acknowledgments

This free course was written by Allan Jones, David Chapman, Helen Donelan, Laurence Dooley, and Adrian Poulton.

This free course includes adapted extracts from the course TM355 Communications technology. If you are interested in this subject and want to study formally with us, you may wish to explore other courses we offer in Technology.

Except for third party materials and otherwise stated (see terms and conditions), this content is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence.

The material included with this course is entirely the property of the Open University.

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OpenLearn - Exploring communications technology
Except for third party materials and otherwise, this content is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence, full copyright detail can be found in the acknowledgements section. Please see full copyright statement for details.