Abstract: A frequency and voltage adjusting method is provided for adjusting a clock frequency or an operating voltage of a first component of a computer system. Firstly, a control function of a computer keyboard is enabled. Then, an initiating signal is generated by the computer keyboard. After the initiating signal is received, a control key of the computer keyboard is depressed to generate a frequency-increasing signal, a frequency-decreasing signal, a voltage-increasing signal or a voltage-decreasing signal. The clock frequency is increased according to the frequency-increasing signal. The clock frequency is decreased according to the frequency-decreasing signal. The operating voltage is increased according to the voltage-increasing signal. The operating voltage is decreased according to the voltage-decreasing signal.

Abstract: A power on self test (POST) device and a computer system applying the same are disclosed, wherein the POST device comprises a micro controller and a displaying unit. The micro controller is embedded on a motherboard of the computer system for receiving a plurality of POST codes generated by the computer system during a booting procedure and transforming the POST codes into a displaying signal. The displaying unit which is capable for receiving and showing the displaying signal is connected to the micro controller through a flexible line.

Abstract: A dual BIOS program protecting method is provided for protecting a first BIOS program and a second BIOS program of a computer system. Firstly, a flag is switched from a first status to a second status during the refreshing of the first BIOS program. If the first BIOS program is successfully refreshed, the flag is switched from the second status to the first status. If the flag is in the second status when the computer system is booted, a first control signal is generated and the second BIOS program enters a write protection mode according to the first control signal.

Abstract: A restriction mechanism for a card is provided. The card includes at least one electronic component mounted thereon. The restriction mechanism includes a substrate, a slot, at least one latch, and at least one latch restriction member. The slot allows the card to be inserted in the slot. The latch is pivotally connected to one side of the slot. The latch is rotatable between a first position in which the card is locked in the slot by the latch, and a second position in which the card is allowed to disengage from the slot. The restriction member is used to prevent the latch from being rotated to the second position.

Abstract: A multi-phase voltage regulator module connects to a central processing unit and is able to operate in one of a high-load mode and a low-load mode. The multi-phase voltage regulator module comprises: a pulse-width-modulation controller generating a plurality of phase-width-modulation signals; and, a plurality of phase circuits, each of which receives a corresponding one of the phase-width-modulation signals and generates a corresponding output current to the central processing unit; wherein a first portion of the phase circuits are activated when the multi-phase voltage regulator module is operated in the low-load mode at a first time, and, a second portion of the phase circuits are activated when the multi-phase voltage regulator module is operated in the low-load mode at a second time, the first portion being non-identical to the second portion.

Abstract: A clock controlling apparatus of a computer system used to tuning a clock frequency of a specific electronic device disposed on a motherboard and the application thereof are disclosed, wherein the clock controlling apparatus comprises an input control unit used to output a frequency increasing signal or a frequency decreasing signal, a control circuit connected to a clock generator disposed on the motherboard in order to tune the clock frequency of the electronic device according to the frequency increasing signal or the frequency decreasing signal, and a displaying unit connected to the control circuit in order to show the clock frequency.

Abstract: A status signal displaying system includes a motherboard, a micro-controller and a display device. The motherboard includes a central processing unit and a plurality of status signal generating circuits for generating status signals. The micro-controller is electrically connected to the status signal generating circuits. The display device is electrically connected to the micro-controller. The status signals are processed by the micro-controller, and the processed status signals are directly transmitted to the display device for display without being processed by the central processing unit.

Abstract: A motherboard and a power managing method for a graphic card installed thereon are provided. When the motherboard is switched to a second performance mode from a first performance mode, a microcontroller in the motherboard outputs a regulation signal to the graphic card through an exclusive connection interface, so as to correspondingly adjust an operation parameter of the graphic card, thus achieving better overall power saving and performance improving the effects of a computer.

Abstract: A motherboard with overclocking and overvolting functions is provided. The motherboard with an overvolting function includes a specified component, a voltage regulator and a micro-controller. The specified component receives an operating voltage. The voltage regulator generates the operating voltage according to a reference voltage. The micro-controller is electrically connected to an external input device for receiving a control signal issued by the external input device and adjusting the reference voltage according to the control signal.

Abstract: A computer system including a first memory unit, a second memory unit and a switch unit is provided. The first memory unit stores a first BIOS. The second memory unit stores a second BIOS. The switch unit has a first configuration and a second configuration. Upon the computer system being started, the switch unit receives an enable signal. When the switch unit is in the first configuration, the enable signal is provided to the first memory unit to start the first basic input/output system. When the switch unit is in the second configuration, the enable signal is provided to the second memory unit to start the second basic input/output system.

Abstract: A motherboard having a time calculating device is provided. The motherboard includes a central processing unit, a chipset and a micro controller. The chipset is connected to the central processing unit. The micro controller includes a time counter and a non-volatile storage unit storing therein a first value. The time counter starts to count time when the operating state of the motherboard detected by the micro controller is switched from a power-off state to a power-on state. The time counter stops counting time and defines the counting value as a second value when the operating state of the motherboard detected by the micro controller is switched from the power-on state to the power-off state. The micro controller updates the first value by adding the first value and the second value and stores the updated first value to the non-volatile storage unit.

Abstract: A method for recovering a BIOS unit, an updating module thereof and a computer system are provided. When the computer system is in a standby mode, and the updating module is coupled with the computer system and detects that a first start unit is enabled, data in the BIOS unit of the computer system are overwritten with program codes stored in the storage unit.

Abstract: The present invention relates to a computer system and a power-saving method thereof. The computer system comprises a slot, a switch set, and a controlling module. An expansion card is capable of inserting into the slot. The switch set controls transmission of a power, a clock, and a bus signal to the slot. When activating a power-saving operation, the controlling module is capable of sending a controlling signal to command the switch set to cut off transmission of power, the clock, and the bus signal to the slot.

Abstract: A drain plug assembly includes an operation unit including a button and a cable is connected between the button and a plug unit which is located in a drain hole of a drain pipe. The cable that is located close to the button is received in a part of a sink and the cable that is located close to the plug unit is received in the drain pipe. A positioning unit is located between the button and the cable so as to control the button at different positions and to drive the cable to move the plug unit. A hose is mounted to the cable. When pushing the button, the cable is moved upward to push the plug upward for draining purpose. The cable is well protected and does not expose so that the cable is not tangled, pulled or damaged by foreign objects.

Abstract: A restriction mechanism for a card is provided. The card includes at least one electronic component mounted thereon. The restriction mechanism includes a substrate, a slot, a latch, and a restriction member. The slot allows the card to be inserted in the slot. The latch is pivotally connected to one side of the slot. The latch is rotatable between a first position in which the card is locked in the slot by the latch, and a second position in which the card is allowed to disengage from the slot. The restriction member is used to prevent the latch from being rotated to the second position.

Abstract: A quantification indicating circuit includes an indicating lamp set, a converting circuit, and an indicating lamp control circuit. The indicating lamp set has a plurality of indicating lamps. The converting circuit has a plurality of predetermined threshold values which are compared with a numerical signal of a circuit board to generate a comparison result. The comparison result is converted to be outputs of a plurality of control bits. The indicating lamp control circuit is coupled between the indicating lamp set and the converting circuit and is used for controlling the number of the indicating lamps which are brightened according to the outputs of the control bits.