| 摘要 |
<p>A mounting or connecting recognition circuit is built onto a printed circuit board, this mounting or connecting recognition circuit having a component to be checked for, a mounting or connecting recognition pad that recognizes whether or not the component is mounted, a mounting or connecting recognition signal being output when the component is mounted at the mounting orconnecting recognition pad, and a mounting or connecting recognition circuit which recognizes that the component is mounted by means of the mounting or connecting recognition signal. When the component to be checked for is mounted at the mounting or connecting recognition pad, the mounting or connecting recognition circuit recognizes that it is mounted by means of detecting the potential level of the signal output from the mounting or connecting recognitionpad.</p> |
