Let's say I have 4 AVR MCU's All hooked up to VCC. And let's say they're all connected to ground through an NPN transistor or NMOSFet. Can I use that transistor to switch the MCUs on\off? I'm pretty sure I can but just want to make sure. Thanks!
EDIT: I guess the concept wasn't simple enough, so I'll make it simpler.
You have an MCU. You have a transistor. If I place an NMOS transistor between the MCU and GND, OR if I place a PMOS transistor between VCC and the MCU, can I switch the MCU on and off physically? Do not tell me to do it with code. I need to be able to do it physically.
And please do not post if you're just going to berate this concept. I design for people. I don't always get creative reign. All I wanted to do was see if I could or not, bot get a lecture on the mechanics of microcontrollers. Sorry for being blunt, but I can't win on this site. Thanks