Abstract: The invention relates to a changeable central processing unit (CPU) module apparatus for a computer, comprising a system control module board, a CPU module board and a heat-dissipating device. A second bus connector of the CPU module board is a golden finger plug extending from the CPU module board and is installed on a socket plug of a first bus connector of the system control module board. With the invention, a user can reduce the cost of updating the CPU and increase the period of using a peripheral equipment of the computer.

Abstract: The invention relates to a changeable central processing unit (CPU) module apparatus for a computer, comprising a system control module board, a CPU module board and a heat-dissipating device. A second bus connector of the CPU module board is a golden finger plug extending from the CPU module board and is installed on a socket plug of a first bus connector of the system control module board. With the invention, a user can reduce the cost of updating the CPU and increase the period of using a peripheral equipment of the computer.

Abstract: A method to determine the minimal dimension of a personal computer and a personal computer constructed through the method are provided An optical disc driver and a heat dissipater are laid aside to define a length and a width of the computer. Then, define the size of a motherboard according to the length and width. The highest electronic component allocated on the motherboard and the optical disc driver are stacked up to define a height. Allocate electronic components on the motherboard and arranging the motherboard, optical disc driver and heat dissipater into a casing with the length, width and height to obtain the minimal dimension of the computer.