Draw one diagram for FDM and one diagram for TDM and explain how they work and how they are different (4 points)

Sure, I can do that.

FDM (Frequency Division Multiplexing) is a technique used to transmit multiple signals simultaneously over a single communication channel. It works by dividing the available bandwidth of the channel into multiple sub-channels, each of which carries a separate signal.

Here's a diagram of how FDM works:

   +-----------+         +-----------+         +-----------+
   | Signal 1  |         | Signal 2  |         | Signal 3  |
   +-----------+         +-----------+         +-----------+
         |                     |                     |
         v                     v                     v
   +-----------+         +-----------+         +-----------+
   | Sub-Channel|         | Sub-Channel|         | Sub-Channel|
   +-----------+         +-----------+         +-----------+
         |                     |                     |
         v                     v                     v
   +-----------+         +-----------+         +-----------+
   |  Channel  |         |  Channel  |         |  Channel  |
   +-----------+         +-----------+         +-----------+

As you can see in the diagram, each signal is divided into its own sub-channel, which is then combined into the main channel for transmission. The sub-channels can be separated at the receiving end to extract the original signals.

TDM (Time Division Multiplexing) is another technique used for transmitting multiple signals over a single communication channel. It works by dividing the available time slots of the channel into multiple sub-slots, each of which carries a separate signal.

Here's a diagram of how TDM works:

   +-----------+  +-----------+  +-----------+
   | Signal 1  |  | Signal 2  |  | Signal 3  |
   +-----------+  +-----------+  +-----------+
   |   Time    |  |   Time    |  |   Time    |
   +-----------+  +-----------+  +-----------+

As you can see in the diagram, each signal is assigned a specific time slot during which it can transmit its data. The time slots are then combined into the main channel for transmission. At the receiving end, the signals are separated by their respective time slots.

The main difference between FDM and TDM is that FDM divides the available bandwidth into separate sub-channels, while TDM divides the available time slots into separate sub-slots.