Calculator

A calculator or memory device, comprising:

• a printed circuit board for performing memory functions;
• a substantially transparent circuit board having a plurality of switches for inputting information to the printed circuit board;
• a body external of the transparent circuit board and including printed circuit board, the body including a substantially transparent keyboard-supporting member for supporting the transparent circuit board;
• at least a portion of the keyboard-supporting member forming a hollow void between the transparent circuit board and the body;
• the hollow void defined by the portion of the keyboard-supporting member and the transparent circuit board is sealed from the plurality of switches;
• the transparent circuit board includes first and second opposed substantially transparent sheets spaced from each other, each transparent sheet carrying electrically conductive switch contact patterns on a respective surface thereof, the electrically conductive switch contact patterns forming the plurality of switches;
• and
• a liquid in the hollow void of the portion of the keyboard-supporting member for enhancing visual effects.

A memory device, comprising:

• a printed circuit board for performing memory functions;
• a substantially transparent circuit board having a plurality of switches for inputting information to the printed circuit board;
• a body external of the transparent circuit board and including printed circuit board, the body including a substantially transparent keyboard-supporting member for supporting the transparent circuit board;
• at least a potion of the keyboard-supporting member forming a hollow void between the transparent circuit board and the body;
• the hollow void defined by the portion of the keyboard-supporting member and the transparent circuit board is sealed from the plurality of switches;
• each of the plurality of switches being pressure-sensitive switches;
• the transparent circuit board includes first and second opposed substantially transparent sheets spaced from each other, each transparent sheet carrying electrically conductive switch contact patterns on a respective surface thereof, the electrically conductive switch contact patterns forming a plurality of pressure sensitive switches;
• a liquid in the hollow void of the portion of the keyboard-supporting member for enhancing visual effects, the liquid being an immiscible liquid having selected color pigments for enhancing visual effects;
• and
• a space filling substance for displacing the liquid into the hollow void.