Connector having plug and receptacle

A connector comprising:

• a plug;
• and
• a receptacle, wherein
• the plug includes
• a plug main body having a plug surface in a flat plate shape including a first plug region, a second plug region, and a third plug region,
• a plurality of projecting parts including a first projecting part and a second projecting part projecting from the plug surface, and
• a plurality of plug terminals projecting lower than the projecting parts from the plug surface,
• the receptacle includes
• a receptacle main body having a receptacle surface in a flat plate shape including a first receptacle region, a second receptacle region, and a third receptacle region, where a first groove and a second groove are formed on the receptacle surface, and
• a plurality of receptacle terminals respectively disposed inside a plurality of holes formed on the receptacle surface,
• the first projecting part divides the first plug region and the second plug region,
• the second projecting part divides the second plug region and the third plug region,
• the first groove divides the first receptacle region and the second receptacle region,
• the second groove divides the second receptacle region and the third receptacle region, and
• when the first projecting part and the second projecting part are inserted into the first groove and the second groove, respectively, plug terminals in the first plug region, the second plug region, and the third plug region are connected to receptacle terminals in the first receptacle region, the second receptacle region, and the third receptacle region.