In accordance with certain embodiments, semiconductor dies are embedded within polymeric binder to form, e. Memory regions with different attributes are formed, having specified cacheability and visibility characteristics. The drill guide apparatus further comprises a first slider mounted on the first track, and a second slider mounted on the second track. If the operation explanation mode is selected at the mode selector, the playback unit plays back an operation guide that is pre-stored in a memory, the operation guide explaining at least one of the camera operations and functions thereof.