Abstract: A reel is provided with a housing having a triangular aperture for entry and removal of linear material wound upon the reel drum. The drum has a spool surface onto which a linear material may be wound, the spool surface having two ends. The housing substantially encloses the drum, and the drum is rotatable about a drum axis relative to at least a portion of the housing. The at least a portion of the housing has a generally triangular aperture sized to receive a linear material wound onto the drum. The aperture has a first side oriented generally parallel to the drum axis, and second and third sides meeting at a vertex generally midway between opposing ends of the spool surface of the drum.

Abstract: A small computer having a card interface slot in a side of the computer. An inserted electronic card, the connector on its inserted end mates firmly with a connector at the inner end of the recess behind the slot. The user ejects an inserted card by sliding a slider which is positioned in a shallow recess on the bottom of the computer, near the slot. The slider is connected to an ejector which actually presses against the inner end of the card. By moving the slider with his thumb, the user can push the card out far enough to disengage the contacts of the card, and then can readily remove the card by hand or allow it to drop out.