Abstract: A media cartridge autoloader including first and second media cartridge transport magazines is disclosed. A magazine drive includes a drive shaft unit, a drive shaft unit shifting mechanism, and a magazine drive motor module. A mechanism that rotates a turntable of a media cartridge picker is also used to move the drive shaft unit such that the drive shaft unit is selectively coupled with either one of the first or second media cartridge transport magazines. A drive shaft of the drive shaft unit is driven by a magazine drive motor of the magazine drive motor module, so that the coupled media cartridge transport magazine is driven.

Abstract: A sliding module comprises a sliding member having a transversal plate disposed transversally and coupled vertically at a substantially middle position of two sliding plates, and the transversal plate includes a rectangular transversal groove, and the transversal groove includes a through hole disposed at an external side of the transversal groove; a spindle member being a rectangular spindle plate and includes a spindle hole disposed separately on both sides of the spindle member, and a spindle bolt passes through one of said spindle holes and is coupled to the transversal groove; a tension spring with both ends separately including a spring hook and one of the spring hooks is latched into the through hole, and another spring hook is latched into a bolt aperture of a spindle bolt above the transversal groove; and a slid member being a driven plate with both lateral sides bent into a sliding groove for embedding an external side of the sliding plate, and the driven plate includes a plate aperture for passing

Abstract: The bearing system according to the invention comprises a sleeve-shaped first bearing disk having a bore concentric to a rotational axis, a cylindrical shaft disposed in the bore and connected to the first bearing disk, the shaft having a second bearing disk disposed at one end that is arranged at a spacing to the first bearing disk such that an annular disk-shaped space is formed between the first and the second bearing disk. A third annular bearing disk is provided that is disposed in the annular disk-shaped space and is rotatable about the rotational axis, the opposing surfaces of the first, the second and the third bearing disk as well as the shaft being separated from one another by a bearing gap filled with bearing fluid. A radial bearing is provided between the outside circumference of the shaft and the inside circumference of the third bearing disk and marked by the hydrodynamic bearing patterns associated with the circumferential surfaces.

Abstract: This invention provides a high-output magnetic head with a high yield, which is capable of minimizing sense current leak or noise caused by a shift of the magnetic wall of an upper shield layer. In one embodiment, the magnetic head is fabricated so that the height of the upper surface of the refill film along the sensor height direction is the same as that of the magnetoresistance layer in a portion where the refill film along the sensor height direction comes in contact with the magnetoresistance layer and the distance from the upper surface of the refill film along the sensor height direction to the upper surface of the lower shield layer gradually increases in a region from the portion where the refill film along the sensor height direction comes in contact with the magnetoresistance layer to a point at a certain distance away from the portion.

Abstract: Embodiment of the invention improve the productivity of a magnetic disk drive that controls the flying height of a magnetic head by use of a heater. According to an embodiment, in a method for manufacturing a magnetic disk drive that writes/reads information to/from a magnetic disk medium by use of a magnetic head including a heater adapted to control the flying height, the read and write performance of the magnetic head is tested; a heating condition used at the time of heating by the heater is determined on the basis of the test results; and a control parameter that specifies the amount of heating by the heater in the determined heating condition is determined.

Abstract: A tape recording head is provided comprising a substrate including a first plane deposited on the substrate comprising a linear array of read transducers spaced apart in a direction substantially perpendicular to the direction of linear motion of a recording tape relative to the magnetic head, and a second plane deposited on the substrate comprising a linear array of read transducers spaced apart in a direction substantially perpendicular to the direction of linear motion of the recording tape relative to the magnetic head, the second plane offset relative to the first plane so that the read transducers in the first plane overlap the read transducers of the second plane such that a first read transducer in the first plane and a second read transducer in the second plane together span the width of a written track on the tape. A method is provided for increasing the SNR ratio of readback data from a track recorded on a tape using a magnetic head having overlapping read transducers is provided.

Abstract: In an abnormal state determination method, the state of a first contact that is set to be open normally and closed in an operation is detected. The state of a second contact that is set to be closed normally and open in the operation complementarily to the first contact is detected. The detected states of the first and second contacts are compared, and abnormality is determined when the first and second contacts are in the same state. An abnormal state determination apparatus is also disclosed.

Abstract: In an abnormal state determination method, a detection target that can at least take two states is monitored. Abnormality is determined when one state of the detection target is detected, and then, another state of the detection target is detected within a preset time. An abnormal state determination apparatus is also disclosed.

Abstract: When the flying height of a magnetic head slider lowers, there arises the problem that the magnetic head slider assumes a forwardly falling attitude and a front edge portion of a leading end of the magnetic head slider comes into contact with a magnetic disk surface, causing damage to the disk surface. To address the problem, one aspect of the invention is directed to a magnetic head slider which includes an air bearing surface, a leading end and a trailing end. Three flying pads are formed on the air bearing surface and a step bearing surface is formed around the first and second flying pads near the leading end and a negative pressure groove for producing a negative pressure is formed in such a manner that the leading side is surrounded by the step bearing surface. The third flying pad is formed near the trailing end and is provided with a magnetic head. A step bearing is formed on the leading side of the third flying pad.

Abstract: A method of processing an air bearing surface of a thin-film magnetic head slider is provided. A first silicon film, a first carbon film, a second silicon film, and a second carbon film are laminated in that order on a face of a thin-film magnetic head slider facing a medium. A protrusion resist pattern that forms protrusions is formed on the second carbon film. Portions of the second carbon film and the second silicon film that are not covered with the protrusion resist pattern are removed by reactive ion etching with O2/CF4. A third carbon film is formed on the first carbon film exposed by the removal of the portions. The protrusion resist pattern is removed to expose the protrusions including the second silicon film and the second carbon film. An ABS resist pattern is formed on exposed surfaces of the protrusions and the third carbon film. A surface not covered with the ABS resist pattern is processed to impart an ABS uneven pattern.

Abstract: A base plate includes a head stack assembly installation portion on which a head stack assembly is rotatably installed, and a step portion restricting rotation of a shipping comb by hooking the shipping comb when the head stack assembly installed on the head stack assembly installation portion is rotated with the shipping comb coupled to the head stack assembly. A hard disk drive includes a base plate, and a head stack assembly which is rotatably installed on the base plate. The base plate includes a head stack assembly installation portion on which a head stack assembly is rotatably installed, and a step portion restricting rotation of a shipping comb by hooking the shipping comb when the head stack assembly installed on the head stack assembly installation portion is rotated with the shipping comb coupled to the head stack assembly.

Abstract: A spring member for an acceleration sensor for detecting acceleration in a direction of a Z-axis that is perpendicular to an X-Y plane includes a movable section having a plane plate shape, for fixing a magnetic field generation member with weight of the acceleration sensor, and a single support arm section having a strip shape parallel to a plane of the movable section when no acceleration is applied. One end of the single support arm section is integrally connected to one end of the movable section and the other end of the single support arm section is fixed. Only the single support arm section in a cantilever configuration supports the movable section.

Abstract: A microactuator includes: a stage on which a positioning object is to be mounted; a frame to which the stage is fixed integrally; a piezoelectric device disposed on the frame, which deforms in an expanding or contracting manner based on a driving signal applied; and a drive which applies a driving signal to the piezoelectric device. The piezoelectric device is arranged to expand or contract to thereby apply a torque to the frame.

Abstract: The present invention provides a method of manufacturing a thin film magnetic head, capable of easily manufacturing a thin film magnetic head with high precision, in which a magnetic shield layer is disposed so as to surround a magnetic pole layer from three directions of a medium outflow direction and two side directions. In a magnetic pole formation region surrounded by a first gap layer portion, a magnetic pole layer and a second gap layer portion are formed and the magnetic pole layer is covered with the first and second gap layer portions. After that, a write shield layer is formed on the first and second gap layer portions so as to surround the magnetic pole layer from three directions (a trailing direction and two side directions).

Abstract: A reader of a magnetoresistive head includes a spin valve with sensor having a stabilizing hard bias and side shield at the side of the sensor, to substantially reduce the undesired flux from adjacent bits and tracks. At least one free layer is spaced apart from at least one pinned layer by a spacer. Above the free layer, a capping layer is provided. The stabilizer may include an insulator, a soft material that is a shielding layer, a decoupling layer, and a hard bias. As a result, the free layer is shielded from the undesired flux of adjacent tracks, and recording media having substantially smaller track size and bit size can be used.

Abstract: The magnetoresistance effect element is of a multilayered structure having at least magnetic layers and an intermediate layer of an insulating material, a semiconductor or an antiferromagnetic material against the magnetic layers, and the magnetoresistance effect element has terminals formed at least on the opposite magnetic layers, respectively, so that a current flows in the intermediate layer. The film surfaces of all the magnetic layers constituting the magnetoresistance effect element are opposed substantially at right angles to the recording surface of a magnetic recording medium. Therefore, the area of the magnetic layers facing the recording surface of the magnetic recording medium can be extremely reduced, and thus the magnetic field from a very narrow region of the high-density recorded magnetic recording medium can be detected by the current which has a tunneling characteristic and passes through the intermediate layer.

Abstract: A voice recorder for use in book pages, such as in a scrapbook, includes a casing with front and back panels such that a covering, such as paper or fabric, covers at least the front side. A recessed playback button is defined within the front side. A recessed record button is defined within either the front or back sides. Included is an integrated microphone to record audio when the recessed record button is depressed. Non-volatile memory is for storage of the audio. A speaker is included for playing back the recorded audio when the recessed playback button is depressed.

Abstract: A fault protection system and method of fault protection for permanent magnet machine (PMM)-based systems that utilize machine neutral decoupling (MND) to shut down a shorted winding and/or to isolate a short-circuit fault to prevent damage to a permanent magnet machine and to any downstream components are provided. The invention may be used for high-reactance and/or high current PMM-based systems, such as are commonly found in industrial and aviation applications.

Abstract: Disclosed is an end-of-life status alarm indication circuit and method for indicating the failure of the primary contacts of a ground fault circuit interruption (GFCI) device to open when a ground fault circuit is detected by the GFCI device. The GFCI device will protect against the situation where the primary contacts of a GFCI device become welded together and will not open when a ground fault circuit is detected by the device. The alarm indication may be either an audible or visual indication.

Abstract: A self testing fault detector having a line side and a load side and a conductive path there between. The apparatus includes a solenoid, which is adapted to move a plurality of contacts disposed in the conductive path from a first position to a second position when the self testing device is powered from the line side; and a processor, which is adapted to energize the solenoid using a first switch and maintain said solenoid in the energized state using a second switch.

Abstract: An RFID protection scheme includes monitoring an output signal of a least one receiver mixer of the reader, and, based at least in part on said monitoring, when said output signal exceeds a predetermined threshold, performing one or more of the following: removing an RF signal from a transmitter power amplifier (PA); removing a bias from the PA; causing a protection switch to divert transmitter power away from an antenna circuit; and signaling a processor to reduce transmitter power.

Abstract: An ESD protection circuit is disclosed. The ESD protection circuit includes a stacked MOS circuit, and a trigger current generator. The object of the stacked MOS circuit is to be the first releasing path of the ESD current; the object of the trigger current generator is to generate the trigger current to turn on the stacked MOS circuit, and then the stacked MOS circuit would be the first releasing path of the ESD current.

Abstract: A light emitting device having a monolithic protection element and a method of fabricating the light emitting device are provided. The light emitting device includes: a light emitter having a cathode and an anode; and the resistive protection element connected to the light emitter in parallel through the cathode and the anode. Here, a resistance Rs of the resistive protection element has a value between a forward resistance Rf and a reverse resistance Rr of a current of the light emitter.

Abstract: A snubber circuit for absorbing reverse recovery current in a power supply is featured comprising a dissipative snubber circuit and a non-dissipative snubber circuit coupled in parallel to a source of reverse recovery current and a load. The dissipative snubber circuit is capable of dissipating a first amount of reverse recovery current from the reverse recovery current source and the non-dissipative snubber circuit recovering a second amount of reverse recovery current from the reverse recovery current source, resulting in the reverse recovery current being absorbed with reduced power dissipation.

Abstract: A power controller for power sourcing equipment in a distributed power network provides power down policies and priority in the event of a power supply failure. The power down priority and policy permits implementation of a rapid decrease in the power demand of the distributed power network to avoid overload of a backup power supply. The priority may be derived based on the relative position of port information in a linked list. Devices associated with a high priority can remain powered in response to a main power supply failure, while lower priority devices can be rapidly powered down to reduce the overall load demand on the backup power supply. The ability to configure ports on the basis of priority and available policies provides a flexible and simple implementation of a response in the event of a main power supply failure.

Abstract: A semiconductor device for protecting a rechargeable cell at least from excessive discharge current due to over discharge of the rechargeable cell, includes (a) a first excessive discharge current detection circuit configured to detect first excess of a voltage at an externally or an internally provided electric current detection terminal exceeding a first voltage level (Vs3), (b) a second excessive discharge current detection circuit configured to detect second excess of the absolute voltage at the electric current detection terminal exceeding a second voltage level (Vs4) higher than the first voltage level, (c) a delay circuit configured to cause each of the first and second excessive discharge current detection circuits to delay its output by a predetermined delay time, and (d) a delay reducing circuit configured to produce a delay time reducing signal for reducing the delay time at a predetermined ratio when a negative voltage lower than a predetermined negative voltage level or a positive voltage higher

Abstract: A drive circuit that controls a switching device ON/OFF and a soft cutoff command circuit that gradually decreases the gate terminal voltage of the switching device when short circuit of the switching device is detected. Additionally, an ON-pulse retention command circuit retains the output of the drive circuit ON when the gate terminal voltage is judged to have exceeded a specified value by a gate voltage judgment comparator that detects the gate terminal voltage of the switching device.

Abstract: The electronic trip device comprises at least one current sensor, a rectifying circuit to supply a supply current, an electronic processing unit to control an actuator designed to actuate an opening mechanism of the main conductor, and an electric power supply circuit equipped with a voltage regulator designed to supply a supply voltage to the electronic processing unit. In the electronic trip device, the power supply circuit comprises voltage raising means enabling a raised voltage to be supplied to the input of the voltage regulator designed to supply the supply voltage to the electronic processing unit, said raised voltage being greater than a voltage at the terminals of the storage capacitor. The invention also relates to a circuit breaker equipped with the electronic trip device described above.

Abstract: A voltage converter comprises an inductive circuit (L) for storing energy during an inductive magnetizing mode and transferring energy during an inductive demagnetizing mode. In addition the voltage converter comprises at least two non-inverting branches (12,13,14) for providing at least two non-inverted output voltages (Va,Vb,Vc) and an inverting branch (15) for providing an inverted output voltage. The inverting (15) and non-inverting (12,13,14) branches being parallely coupled to an output (10) of the inductive circuit (L). The inductive circuit being arranged to transfer energy to the inverting branch (15) and to one of the at least two non-inverting branches (12,13,14). Through this, the inverted voltage (Vinv) and the corresponding non-inverted output voltage (Va,Vb,Vc) of the one of the at least two non-inverting branches (12,13,14) are having an opposite polarity and a substantially equal magnitude.

Abstract: In a method for producing and/or adjusting an electromagnetically controllable actuator which is appropriate to control the flow of a fluid, at least one electromagnetic property of the actuator is measured, and the measured electromagnetic property itself or a quantity derived therefrom is used as an actual value for a control of a correcting variable. This correcting variable is taken into account directly to produce or adjust the actuator. A suitable device for this calibration comprises a control circuit and a mounting location, where the actuator can be mounted into the device, and is designed to adjust at least one mechanical property of the actuator by way of the correcting variable.

Abstract: A sensorless position measurement method may be used to determine the position of a solenoid-based actuator which controls some substance. The sensorless position measurement method of the present invention eliminates the need for a dedicated sensor in the actuator device, as well as the associated electrical connections between this sensor and the system controller.

Abstract: The present invention provides a system and method for controlling a solenoid that ensures accurate timing between the enabling of the driving circuit and the activation of the solenoid, while simultaneously providing a two energy level driving scheme to reduce power consumption. The present invention utilizes a single enable signal and supplies the solenoid two different energy levels, a higher “set” level and a lower “hold” level. The generation of these two levels is based on the enabling signal and guarantees that the higher “set” level is present when the solenoid is activated, thereby minimizing undesirable timing jitter.

Abstract: Wafer temperature is measured as a function of time following removal of a heat source to which the wafer is exposed. During the wafer temperature measurements, a gas is supplied at a substantially constant pressure at an interface between the wafer and a chuck upon which the wafer is supported. A chuck thermal characterization parameter value corresponding to the applied gas pressure is determined from the measured wafer temperature as a function of time. Wafer temperatures are measured for a number of applied gas pressures to generate a set of chuck thermal characterization parameter values as a function of gas pressure. A thermal calibration curve for the chuck is generated from the set of measured chuck thermal characterization parameter values and the corresponding gas pressures. The thermal calibration curve for the chuck can be used to tune the gas pressure to obtain a particular wafer temperature during a fabrication process.

Abstract: The present invention relates to an anode substrate for a solid electrolytic capacitor which is produced by cutting obliquely a metal substrate comprising a valve-acting metal layer having fine pores and a valve-acting metal layer without fine pores, and having a cut surface which is formed by elongation of the valve-acting metal layer without fine pores dragged by a cutting blade; particularly to an anode substrate for a solid electrolytic capacitor which is produced by cutting obliquely a metal substrate comprising a valve-acting metal layer having fine pores and a valve-acting metal layer without fine pores, and a layer of the elongated valve-acting metal which is generated by that the valve-acting metal layer without fine pores is elongated being dragged along with a cutting blade and covers the edge part of the valve-acting layer having fine pores meets the requirement represented by the following formula: 0?y/z?1??[Formula 1] wherein y represents the thickness of the layer of the elongated valve-acting

Abstract: The present invention relates to an organic capacitor having a voltage-controlled variable capacitance. The capacitor of the invention comprises at least one first electrode, a second electrode, and an interposed insulator layer and is characterized by at least one first semiconductor layer disposed between the first electrode and the second electrode. Between the first and second electrodes there is applied a voltage which acts on the semiconductor layer such that at least one concentration of free charge carriers in this at least first semiconducting layer is varied in a controlled manner by the applied voltage. The concentration of the charge carriers defines the capacitance of the capacitor.

Abstract: An exemplary embodiment providing one or more improvements includes a capacitor with a segmented end electrode and methods for segmenting an end electrode of a capacitor for reducing or eliminating instances of thermally induced damage of the capacitor.

Abstract: A method of manufacturing a multilayer capacitor comprises a first layer forming step, a first electrode forming step, a second layer forming step, a second electrode forming step, a separation step, an element forming step and a terminal forming step. In the first layer forming step, a first ceramic green layer is formed on a supporting body. In the first electrode forming step, a first electrode pattern is formed on the first ceramic green layer. In the second layer forming step, a second ceramic green layer is formed laminated on the first ceramic green layer. In the second electrode forming step, a second electrode pattern is formed at the second ceramic green layer. In the separation step, the support body is separated from the laminated body. In the element forming step, elements are formed by laminating a plurality of the laminated bodies.

Abstract: A capacitive structure and technique for allowing near-instantaneous charge transport and reliable, wide-band RF ground paths in integrated circuit devices such as integrated circuit dies, integrated circuit packages, printed circuit boards, and electronic circuit substrates is presented. Methods for introducing resistive loss, dielectric loss, magnetic loss, and/or radiation loss in a signal absorption ring implemented around a non-absorptive area of one or more conductive layers of an integrated circuit structure to dampen laterally flowing Electro-Magnetic (EM) waves between electrically adjacent conductive layers of the device are also presented.

Abstract: The present invention provides a thin-film embedded capacitance having a substantial electrostatic capacity per unit area, and a method for manufacturing thereof. A thin film embedded capacitance comprising: a metallic thin-film for wiring made of a metallic material in a non-yield state; the first electrode formed on the film for wiring; a dielectric material layer formed on the first electrode and the film for wiring, at a temperature not lower than ordinary room temperature to lower than a yield temperature of the film for wiring, having a coefficient of thermal expansion lower than that the film for wiring; and the second electrode formed on the dielectric material layer, and a method for manufacturing thereof.

Abstract: A capacitor comprising: a capacitor body including a plurality of laminated dielectric layers, a plurality of inner electrode layers which are respectively disposed between mutually adjacent ones of the dielectric layers, a first main surface located in a laminated direction of the dielectric layers, and a second main surface opposite to the first main surface; a first outer electrode formed on the first main surface of the capacitor body and electrically connected to the inner electrode layers; a second outer electrode formed on the second main surface of the capacitor body and electrically connected to the inner electrode layers; a first dummy electrode formed on the first main surface of the capacitor body; and a second dummy electrode formed on the second main surface of the capacitor body.

Abstract: In a solid electrolytic capacitor, a second dielectric layer made of an oxide of valve action metal is formed on first side, second side, and third side surfaces of an anode portion of an anode member. Between the second dielectric layer and a conductive polymer layer of the cathode layer, an electrical insulating resin layer is formed.

Abstract: An entertainment device that includes ventilation openings in a bottom panel of a chassis of the device to reduce the chance that the ventilation openings will be covered and that the entertainment device will overheat. The entertainment device includes a motherboard that is mounted to a top panel of the chassis so that a CPU is mounted to the motherboard upside down within the chassis.

Abstract: A mounting apparatus for holding an expansion card with a slot cover, the mounting apparatus comprises a rear panel and a fastener. The rear panel defines a slot, and forms a holder above the slot. The holder forms a pivoting axis at a free end thereof, and the pivoting axis is in parallel with the rear panel. The fastener is pivotably attached to the pivoting axis, and comprises a pressing portion pressing the slot cover to the holder and a locking portion locked to the rear panel.

Abstract: A mechanism for adjusting a rotary angle of an LCD includes: a lower base with a sector rack and arcuate sliding grooves disposed at the top surface thereof; an upper base disposed with an LCD at an upper portion thereof, the bottom surface of the upper base being disposed with sliding posts for movably engaging with the arcuate sliding grooves; and a positioning mechanism including a positioning spring and a positioning push button. The positioning spring constantly urges the positioning push button to mate with one of the protruding teeth of the rack, thereby positioning the rotary angle of the upper base and the LCD. When the positioning push button is inwardly pushed, the positioning push button is disengaged from the protruding tooth thereby enabling the LCD to rotate right and left. The adjusting mechanism further includes an inhibiting mechanism for restricting the rotating scope of the LCD.

Abstract: An exemplary display device (10) includes a display screen (11), a protective screen (19), and a housing (13) accommodating the display screen. The housing includes a mechanism for fixing the protective screen immediately in front of the display screen. The mechanism is configured as grooves (133) in a front portion of the housing, or blocks (433) integrally formed with the housing, which conveniently provides fixing of the protective screen in front of the display screen.

Abstract: A portable computer includes: an expansion base module; a system module having a rear side and a connecting end that is slidably pivoted to the expansion base module; and a stand having a first end that is pivoted to a rear end of the expansion base module, and a second end that is pivoted to the rear side of the system module such that the system module, the stand, and the expansion base module are stacked one above the other when the connecting end of the system module is disposed at a front end of the expansion base module, and that the stand and the system module stand from the expansion base module when the connecting end of the system module is disposed at a position between the front end and the rear end of the expansion base module.

Abstract: A portable computer includes a computer main body to which an attached object is detachably mounted, a mounting part which is provided in the computer main body to accommodate the attached object, engaging parts which are formed at opposite sides of the mounting part in a transverse direction with respect to a separation direction of the attached object, insertion parts which are formed at opposite sides of the attached object corresponding to the engaging parts, a latch which comprises a locking part locked to each engaging part through each insertion part and an inclination part inclined from the locking part, and is installed to the attached object to slide along the transverse direction with respect to the separation direction of the attached object; and a latch movable part which comprises a stopper provided in a position corresponding to the inclination part, and is movable within the attached object in the separation direction of the attached object, the latch sliding between a locking position where t

Abstract: A portable computer includes a computer main body, and a display part connected to the computer main body and having a display panel to display an image thereon, a plurality of coupling parts which are formed on opposite side walls of the display panel, a support bracket which supports the opposite side walls of the display panel and varies in length, and having a pair of supporters slidably coupled to each other, and a coupling member which is coupled to one of the plurality of coupling parts to couple the support bracket to the display panel. Thus, the portable computer having the support bracket which varies in length according to a size of a display panel is used for display panels of various sizes.

Abstract: A computer system such as a portable computer is provided with a computer main body and a display panel rotatably coupled to the computer main body so as to open and close the computer main body; a disk accommodating part provided in a plate surface of the computer main body to accommodate an optical disk; a disk cover member coupled to the computer main body to rotatably open and close the disk accommodating part; a detector unit to detect a rotating position of the display panel with respect to the computer main body, when the disk accommodating part is open by the disk cover member; an alarm unit to output a predetermined alarm signal; and a control unit arranged to control the alarm unit to output the alarm signal based on the rotating position detected by the detector unit.

Abstract: A modular computer system includes a power supply drawer for supplying and regulating the power, an interface module, a plurality of functional drawers, and a case. The interface module is electrically connected to the power supply drawer and the functional drawers, and has an electric power distributor for distributing the power from the power supply drawer. Each of the functional drawers provides a specific function, and has a voltage regulation module for regulating the power from the interface module. The case has one side anchored with the interface module, and includes a plurality of first partitions and a second partition for accommodating the functional drawers and the power supply drawer therein respectively. Thus, the heat produced in operation is not concentrating near the central processing unit in case anymore. By adjusting the specific functions of the functional drawers, users can be fully satisfied with the flexibility of arranging apparatus units.