Unit 2E - Types of Communication Channel.pptx

Learn all about simplex, half-duplex, duplex communication and understand bandwidth concepts.

1. Unit 2. Fundamentals of Computer Systems Tam Lynass MCT

2. Unit 2 Fundamentals of Computer Systems Topic E How Data is Transmitted by Computer Systems Tam Lynass MCT

3. Introduction At some stage YOU, the IT professional may have to recommend , set up and customise a communication system. To do so effectively YOU will need to understand the types of communication channel to use. YOU must also have an appreciation of the advantages and disadvantages of different channels .

4. Learning outcomes On completion of this unit you will be able to: List the types of communication channels available Discuss advantages and disadvantages of each type Suggest typical uses of each channel type in computer systems

5. Method List of Key Terms The Classic Confectionery Company – Discussion Questions 1 and 2 Report back Explanation of Key Terms Suggested Use of Communication Channels

6. Types of Communication Channel Simplex One way only Half-duplex One way at a time Full-duplex Two way simultaneously Point-to-point Direct one to one Multi-drop Direct one to many

7. Discussion

8. Scenario Local Confectionery Shop wants to develop an on-line presence Limited resources of 1 van and 1 delivery driver Minimum order of £30 Maximum distance of 50 miles

9. Group Discussion Questions Consider the typical road journey taken by the delivery van Which factors will determine how long a delivery will take? Which factors will determine the number of orders they can take? 10 minutes to discuss in your group using the worksheet 1 person from your group to report back

10. Optional question extended activity

11. Report Back One way street – Limitation of direction Road-works with traffic lights – Limitation of timing Single lanes in both directions – Limitation of maximum speed Point to Point – Limitation of waiting time (loading/unloading) Multi-drop – Limitation of capacity

12. Limitations to delivery of packets One-way streets Roadworks with Traffic Lights ‘A’ Roads with no overtaking Only one driver Only one van

13. Types of communication channel – Typical Uses Simplex – Real-time remote weather reporting systems Half-Duplex – Space exploration control systems Full Duplex – Low-latency Internet traffic (On-line gaming) Point to Point – Secure Dedicated Bus networks Multi-drop – Live Broadcast, Webinar, Streaming

14. Summary On completion of this unit you will be able to: List the types of communication channels available Discuss advantages and disadvantages of each type Suggest typical uses of each channel type in computer systems

15. Look forward Read p 112-115