Data Control


Engineering Studies – H4 Telecommunication Engineering – Electricity

This topic is concerned with data management systems. Techniques to transmit, to compress, and to encrypt are key concepts.  The concept of error correction in signals is outlined.

Key Concepts

  • Error correction
  • Data compression
  • Data encryption
  • Data ‘packetisation’

Discussion Questions

  1. Why might errors occur in data when the data is transmitted?
  2. How might data errors be detected?
  3. How might data errors be minimised?
  4. Why is data compression an essential feature of communication?
  5. Explain examples of data compression techniques.
  6. What is encryption and why is it necessary?
  7. Why is data often transmitted in ‘packets’?