COMPUTER

摘要

PROBLEM TO BE SOLVED: To provide a computer which can be easily up-graded at low up-grade costs. SOLUTION: A central processing unit board 1 constituted by mounting a central processing unit 11 to be up-graded, a jump setting part 13 for setting a jump switching state in order to supply a clock signal matched with the specifications of the central processing unit, and central processing unit side connectors 12 on a printed circuit board 14 is attachably and detachably mounted via the central processing unit side connectors 12 and main side connectors 21 on a main board 2 by a user.