Memory system and wiring board

A memory system comprising:

• a first wiring board having a first interconnection, a second interconnection, and a first side surface;
• a second wiring board having a third interconnection, a fourth interconnection, and a second side surface;
• a first projecting part and a second projecting part provided at one of the first side surface and the second side surface, respectively;
• a first recessed part and a second recessed part provided at the other of the first side surface and the second side surface, respectively;
• a memory mounted on the first wiring board and electrically connected to the first interconnection and the second interconnection;
• and
• a memory controller mounted on the second wiring board and electrically connected to the third interconnection and the fourth interconnection, wherein
• the first projecting part is connected to one of the first interconnection and the third interconnection,
• the second projecting part is connected to one of the second interconnection and the fourth interconnection,
• the first recessed part is connected to the other of the first interconnection and the third interconnection,
• the second recessed part is connected to the other of the second interconnection and the fourth interconnection,
• the first projecting part is engaged with the first recessed part to electrically connect the memory to the memory controller via the first interconnection and the third interconnection, and
• the second projecting part is engaged with the second recessed part to electrically connect the memory to the memory controller via the second interconnection and the fourth interconnection.