Easily-upgradable computer and CPU board therefor
DCFirst Claim
1. A central processing unit (CPU) board for a computer having a main board not containing a CPU, said CPU board comprising:
- a printed circuit board having a wiring pattern;
a CPU mounted on a first major surface of said printed circuit board, said CPU having a plurality of terminals and being operative in accordance with an externally generated clock signal received through certain of said terminals;
means for removably coupling and electrically connecting said CPU board to said main board of said computer; and
a jump setting circuit including a plurality of jump switches, each of said jump switches being set in predetermined accordance with an operational specification of said CPU so as to control a clock controller on said main board to produce said clock signal suitable for said CPU,wherein said jump setting circuit and said terminals of said CPU are electrically connected to said connecting means by said wiring pattern, said CPU thereby receiving said clock signal produced by said clock controller on said main board via said connecting means.
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Abstract
An easily-upgradable computer includes a CPU board removably attached to a main board. The CPU board includes a CPU, a jump setting circuit which includes a plurality of factory-set jump switches, and a pair of first connectors electrically connected to the CPU and jump setting circuit. The main board includes a plurality of conventional peripheral devices, drivers and controllers, a clock generator, and a pair of second connectors removably coupled and electrically connected to the pair of first connectors. A wiring pattern of the CPU board electrically connects address, data, control signal, and power supply terminals of the CPU to the pair of first connectors, and a wiring pattern of the main board electrically connects the plurality of peripheral devices, drivers, and controllers, and the clock generator to the pair of second connectors. The jump switches on the CPU board are factory-set in accordance with the operational specifications of the CPU, and control the clock generator on the main board.
28 Citations
18 Claims
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1. A central processing unit (CPU) board for a computer having a main board not containing a CPU, said CPU board comprising:
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a printed circuit board having a wiring pattern; a CPU mounted on a first major surface of said printed circuit board, said CPU having a plurality of terminals and being operative in accordance with an externally generated clock signal received through certain of said terminals; means for removably coupling and electrically connecting said CPU board to said main board of said computer; and a jump setting circuit including a plurality of jump switches, each of said jump switches being set in predetermined accordance with an operational specification of said CPU so as to control a clock controller on said main board to produce said clock signal suitable for said CPU, wherein said jump setting circuit and said terminals of said CPU are electrically connected to said connecting means by said wiring pattern, said CPU thereby receiving said clock signal produced by said clock controller on said main board via said connecting means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An easily-upgradable computer, comprising:
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a CPU board, including; a wiring pattern, a first connecting means, a CPU mounted on a first major surface of said CPU board, said CPU having a plurality of terminals and being operative in accordance with an externally generated clock signal received through certain of said terminals, and a jump setting circuit including a plurality of jump switches, each of said jump switches being set in predetermined accordance with an operational specification of said CPU so as to control a clock controller external to said CPU board to produce said clock signal suitable for said CPU, said jump setting circuit and said terminals of said CPU being electrically connected to said first connecting means by said wiring pattern; a main board that does not contain a CPU, including; a second connecting means for mating with said first connecting means, said first connecting means and said second connecting means being configured to removably couple and electrically connect said CPU board and said main board; and
,said clock controller that communicates with said jump setting circuit and said terminals of said CPU through said first and second connecting means when they are mated together and produces said clock signal in accordance with said jump switches. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification