Method of stacking printed circuit boards

A method for stacking printed circuit boards, wherein four printed circuit boards formed as squares of the same specification and the same size are mounted with electronic parts comprising circuits, and are stacked on a mother board by rotating an n'+1.sup.th printed circuit board about an axis which is perpendicular to said mother board and passing through the center point of said square of and n'.sup.th printed circuit board, 90 degrees, where n;' is a positive number less than four, comprising:

• providing each of said printed circuit boards, at one side, with a third connector for coupling to said mother board or a lower printed circuit board, providing each of said printed circuit boards, at a side adjacent to said one side, with a fourth connector for coupling to an upper printed circuit board, and providing each of said printed circuit boards, on both faces thereof penetrating therethrough, with fifth connectors, each consisting of one or more terminals, for selecting said printed circuit boards and for interconnecting the upper printed circuit boards and either said mother board or the lower printed circuit board;
• connecting each of the terminals of said fourth connectors to each of the terminals of said third connectors;
• encasing and holding each of said printed circuit boards in a package comprising an upper lid and a lower lid;
• providing said packages, at parts where said third, fourth, and fifth connectors of the stacked printed circuit boards are interconnected, with apertures, and providing said package, at four corners thereof, with through holes;
• stacking said packages two by two;
• and
• inserting fasteners into two non-adjacent holes among the four holes, so as to fix said packages to each other.

A method for stacking printed circuit boards, wherein a plurality of printed circuit boards mounted with electronic parts comprising circuits are stacked on mother board, comprising:

• forming said printed circuit boards, respectively, in the same size and shape of a regular M-sided polygon, where M is an integer not less than four;
• providing said mother board, at positions corresponding to two non-adjacent sides of said regular M-sided polygon, with first and eighth connectors in which terminals of a data bus line, an address bus line, and a timing signal line for reading/writing data are arranged, and providing said mother board, at 360/M-degree intervals around a center point of said regular M-sided polygon, with M second connectors, each consisting of one or more terminals, for selecting said printed circuit boards;
• providing each of said printed circuit boards, on one face thereof at two non-adjacent sides of said regular M-sided polygon, with third and ninth connectors which are located in the same relation, in which terminals are arranged in the same manner as said first and eighth connectors, providing each of said printed circuit boards, on an opposite face thereof at each of sides adjacent to said sides having said third and ninth connectors, with fourth and 10th connectors each of whose terminals is connected to each of the terminals of said third and ninth connectors thereon, respectively, and providing each of said printed circuit boards, on both faces thereof penetrating therethrough at positions confronting said M second connectors of said mother board, with M fifth connectors for coupling to said second connectors, respectively;
• and
• stacking said M printed circuit boards on said mother board by rotating an m+1.sup.th printed circuit board about an axis which is perpendicular to said mother board and passing through the center point of said regular M-sided polygon of an m.sup.th printed circuit board, through an angle of 360/M degree, where m is a positive number less than M.

A method for stacking printed circuit boards, wherein a plurality of printed circuit boards mounted with electronic parts comprising circuits are stacked on a mother board, comprising:

• forming said printed circuit boards, respectively, in the same size and shape of a regular M-sided polygon;
• providing said mother board, on a top face at positions corresponding to two non-adjacent sides of said regular M-sided polygon, with first and eighth connectors for coupling to said printed circuit boards, in which terminals of a data bus line, an address bus lines, and a timing signal line for reading/writing data are arranged, providing said mother board, on a bottom face at each of sides adjacent to said sides having said first and eighth connectors, with 11th and 12th connectors each of whose terminals is connected to each of the terminals of said first and eighth connectors therein, respectively, and providing said mother board, on both faces thereof penetrating therethrough at 360/M-degree intervals around the center point of said regular M-sided polygon, with M second connectors, each consisting of one or more terminals, for selecting said printed circuit boards;
• providing each of said printed circuit boards, on one face thereof at two non-adjacent sides with third and ninth connectors which are loacted in the same relation, in which terminals are arranged in the same manner as said first and eighth connectors, providing each of said printed circuit boards, on an opposite face thereof at each of sides adjacent to said sides having said third and ninth connectors, with fourth and 10th connectors which are located in the same relation, in which terminals are arranged in the same manner as said 11th and 12th connectors and providing each of said printed circuit boards, on both faces thereof penetrating therethrough at positions confronting said M second connectors of said mother boards, with M fifth connectors for coupling to said second connectors, respectively;
• and
• stacking said plurality of printed circuit boards on both faces of said mother board by rotating an m+1.sup.th printed circuit board about an axis which is perpendicular to said mother board and passing through the center point of said regular M-sided polygon of an m.sup.th printed circuit board, through an angle of 360/M degree.