contact bounce
Technical computing term for the rapid make-and-break of electrical contacts when a switch is operated, causing multiple signals.
A debounce circuit is used to prevent contact bounce in switches.
チャタリング is the more common loanword for contact bounce in Japanese engineering contexts, while 接点跳動 is a native kanji compound used in formal or technical documentation.
Compound of 接点 (contact point) and 跳動 (jumping motion), literally describing the bouncing of electrical contacts.