Simple time in simulink

I want to put two subsystems in the same system the first sub syeteme must have a continuous sipmle time the second must have a dicrete sipmle time Can you help me?

Answer 1

[Azzi Abdelmalek]

For each input of the second subsystem add a zoh block with a sample time of your choice, you can use the same block at the outputs, you can also, use a quantizer block at the outputs.

[abidi Mohamed]

My second subsystem have an electric signal output (source de tension)and I can't add a zoh in input