Abstract: The present invention relates to an apparatus for and method of picking-up a center hub used with a flexible disk at a step of fixing the center hub and flexible disk to each other or at a similar step in the flexible disk cartridge manufacturing process. The spindle is lowered toward the center hub until the centering pin provided at the end thereof is projected into the central hole in the central portion of the center hub for centering. Next, the collet chuck is lowered until the end claws thereof are projected into the concavity in the central portion of the center hub. At this time, the flange portion of the center hub is raised due to as attraction exerted thereon by the magnets buried in the outer end face portion of the collet chuck other than at the end claws.

Abstract: A semiconductor memory having a construction making it less susceptible to .alpha.-rays. The memory includes a pair of transistors connected in a flip-flop arrangement. In each memory transistor there is a buried region of high concentration which contacts the collector region of the same impurity. The base region consists of a relatively low concentration part, in which the emitter or emitters are formed, and a high concentration part, to which the base electrode is attached. The high concentration part of the base region extends down to and protrudes into the high concentration buried region, resulting in a higher than usual collector-base capacitance. The latter causes the voltage change due to .alpha.-rays to be less than it otherwise would be.