UNIT 3 PREPARATION SHORTS

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 UNIT 3 PREPARATION SHORTS :-


  1. Give different types of encoding  formats in digital encoding ?
  2. Different types of data transmission techniques ?
  3. Advantages and disadvantages of parallel data transmission ?
  4. Advantages and disadvantages of serial data transmission ?
  5. Short notes on asynchronous transmission?
  6. Short notes on synchronous transmission?
  7. Need for start and stop bits in asynchronous transmission ?
  8. Advantages and disadvantages asynchronous transmission ?
  9. Advantages and disadvantages synchronous transmission ?
  10. Define bit overhead ,overhead efficiency ?
  11. What are error control techniques ?
  12. Different types of error detection and control / correction methods?
  13. Need for digital modulation ?
  14. Define bit rate and baud rate ?
  15. Basic types of digital modulation techniques ?
  16. Draw the wave forms for ASK , PSK, FSK ?
  17. Compare ASK , FSK, PSK?
  18. Block diagram of  ask , fsk , psk ?

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