How do toy robots turn themselves off after a shutdown?

[s355]

When you shut down a toy robot gracefully, it shuts down exactly like a computer does. How does the robot do its last step of the shutdown, cutting power to the hardware? Computers do this by unbridging the power-on wires of the power supply.

 

[USAFRet]

The entire code is saved in firmware. There isn't a lot of things for it to do as it shuts down.

No different than many many other devices.
Your stove, monitor, stereo.

 

[s355]

The entire code is saved in firmware. There isn't a lot of things for it to do as it shuts down.

No different than many many other devices.
Your stove, monitor, stereo.

So the power supply is told to disconnect the batteries everywhere except the power-up circuitry, similar to a laptop?

 

[USAFRet]

So the power supply is told to disconnect the batteries everywhere except the power-up circuitry, similar to a laptop?

A "toy robot" is so much less complex than a laptop.
Not sure of your question here.

The 'power up" circuitry is nothing but a momentary on-off button that is connected to the battery or whatever power source.

 

[hotaru.hino]

When you shut down a toy robot gracefully, it shuts down exactly like a computer does. How does the robot do its last step of the shutdown, cutting power to the hardware? Computers do this by unbridging the power-on wires of the power supply.

It actually may not power off completely, but go in a extremely low power state wherein the next time it receives a signal (i.e., the power button/switch), it boots up as if it were from a cold boot, minus a few flags to say it was in said low power state.

I've worked on a product that did this in order to maximize battery life. In any case, modern computers and electronics are rarely completely off unless their source of power is physically disconnected.

 

[drivinfast247]

There is no physical disconnect of power when it's turned off.

 

[USAFRet]

There is no physical disconnect of power when it's turned off.

Depends on the device and type of on/off switch.

 

[drivinfast247]

Depends on the device and type of on/off switch.

I messed up. I meant the PC doesn't physically disconnect the power.

 

[USAFRet]

I messed up. I meant the PC doesn't physically disconnect the power.

Right.

PC or laptop is significantly different than other devices.