If I did this project:
Here is a small computer, $35.00 usd
Raspberry Pi 3 Model B ARM Cortex-A53 CPU 1.2GHz 64-Bit Quad-Core 1GB ARM, USB, HDMI,
All computers can talk together over a network (wired or wireless).
The Raspberry Pi 3 can talk to a PC over the network.
I am using one as a laptop computer. (USB keyboard, 4xUSB mouse, monitor, Ethernet, SD card)
Raspberry Pi 3 can talk to HDMI monitor or a touch screen.
Does audio and real time video.
**broken link removed**
If this is too much power, there is a Raspberry Pi 0 for $5.00 usd. It is single core. Some things missing. (wireless missing) Smaller memory.
In a PC network each looks like a PC.