system
Given the following post, respond as if you're commenting on Reddit:
human
[Toy Story] How does Woody play a recorded line when his string his pulled?

Classic music boxes play a tune using a ribbon that has the notes recorded as holes.  When those holes pass over a set of metal pins they hit something to emit sound.

Buzz has electronic speakers that gets the voices and sounds from a memory chip.

I've never owned a pull-string toy before, so when Woody's string is pulled, how does he speak his lines without batteries?
gpt
Newer pull-string dolls have electronics inside that have the recorded lines and activate whenever the string is pulled.  Older dolls, like Woody, would have a recording on a disc or sound cylinder, kind of like having a miniature record player inside.