Transmission modes

Transmission modes

1. Full duplex transmisson

   • allows two-way communication at the same time. The telephone system, land or mobile, is an example of a full duplex system.

2. Simplex transmission

   • sends data in one direction only. A radio broadcast is a good example of simplex transmission.

3. Half duplex transmission

   • allows two-way transmissions but the devices don’t transmit at the same time. A system being used to monitor and control manufacturing processes can use half-duplex transmissions. It will send a message to the control computer, which will respond with new settings, but they both cannot send messages at the same time. Some network systems use half-duplex to maximise bandwidth.

4. Bit 8 bits in a byte

5. 1024 bytes in 1 kb

   • 1024 gb in 1 tb

6. 1024 kb in 1 mb

7. 1024 mb in 1 gb

8. Types of storage units

   • Bit (b)
   • Byte (B)
   • Kilobyte (KB)
   • Meganyte (MB)
   • Gigabyte (GB)
   • Terabyte (TB)