CN211786880U - Small computer host - Google Patents

Abstract

The utility model discloses a small computer host, which comprises a shell, a computer circuit board and a display unit, wherein the computer circuit board is arranged in the shell and is provided with a computing module, and the computing module is a functional unit which integrates an X86 framework processor and a memory into a whole; the display unit is arranged on the shell. According to the embodiment of the utility model provides a small-size computer host computer utilizes calculation module and computer circuit board and casing to constitute the computer host computer, and its is small, portable and use to, be provided with the display element on the casing, so, to the user, can utilize the display element to operate and show, make this computer host computer need not connect peripheral hardware such as display screen, mouse and can use, its convenient to use does not receive the restriction of scene.

Description

Small computer host

Technical Field

The utility model relates to a computer especially relates to a small computer host computer.

Background

Based on the development and evolution of small size, mobility and portability of computer equipment as functional equipment for office, entertainment, communication and the like, intel corporation introduced that functional units such as processors, memories and the like were integrated together to form a very small size computing module or computing card, and the computing module or computing card was plugged onto an interface board to expand various communication interfaces by using the interface board, so as to conveniently connect external equipment by using the communication interfaces, thus, the combination of the computing card and the interface board can form a computer equipment which is smaller in size and convenient to carry.

However, although such a computer device has the advantages of small size, portability, etc., it is still not very convenient for users to use, for example, when in use, the computer device needs to connect peripherals such as a display screen and a mouse by using each communication interface on the computer device, especially in some scenes without peripherals, so that the computer device cannot meet the use requirements of users.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, an object of the present invention is to provide a small computer host.

In order to achieve the above object, according to the present invention, a small computer host includes:

a housing;

the computer circuit board is arranged in the shell and is provided with a computing module, and the computing module is a functional unit integrating at least an X86 framework processor and a memory into a whole;

and the display unit is arranged on the shell.

According to the utility model provides a small-size computer host computer utilizes calculation module and computer circuit board and casing to constitute computer equipment, and it is small, portable and use to, be provided with the display element on the casing, so, to the user, can utilize the display element to show, carry out interactive operation even, make this computer host computer need not connect external equipments such as display screen, mouse and can use, its convenient to use does not receive the restriction of scene.

In addition, the small computer host according to the above embodiment of the present invention may further have the following additional technical features:

according to the utility model discloses an embodiment still includes reserve battery, reserve battery establishes in the casing and with computer circuit board links to each other for do computer circuit board reserve power supply.

According to the utility model discloses an embodiment, the display element is display screen or touch-control display screen.

According to an embodiment of the present invention, the computer circuit board includes a first interface board, and the first interface board is provided with a first connector and a plurality of first communication interfaces; the computing module is provided with a data interface end; the computing module and the first interface board are fixedly arranged in the shell, and a data interface end of the computing module is plugged with the first connector;

according to an embodiment of the present invention, the computer circuit board further includes a second interface board and a hard disk, the second interface board is stacked on the first interface board in the housing, and the second interface board has a second connector and a plurality of second communication interfaces; the hard disk is fixedly arranged in the shell, and an interface of the hard disk is inserted into the second connector.

According to the utility model discloses an embodiment, computer circuit board still is equipped with the speaker that is used for audio output.

According to an embodiment of the present invention, the housing includes an upper housing and a lower housing, and the upper housing is detachably connected to the lower housing; the first interface board is fixedly arranged in the lower shell, and the second interface board is fixedly arranged in the upper shell.

According to the utility model discloses an embodiment still includes heat dissipation module, heat dissipation module establishes in the inferior valve is internal and close on calculation module, be equipped with the louvre down on the casing.

According to an embodiment of the present invention, a support pillar is disposed on the first interface board, and the computing module is supported by the support pillar and is locked and fixed to the support pillar by a first fastener; the upper end of support column is equipped with location portion, be equipped with on the calculation module with location portion complex locating hole.

According to the utility model discloses an embodiment, the heat dissipation module includes:

the heat conducting plate is attached to the computing module;

one end of each flat tube is attached to the heat conducting plate, and a cooling medium is filled in each flat tube;

the heat dissipation block is attached to the flat tube and the heat conduction plate;

and the heat dissipation fan is arranged at the other end of the flat tube and is adjacent to the heat dissipation block so as to blow out the heat of the heat dissipation block and the other end of the flat tube to the outside of the machine shell.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a small computer host according to an embodiment of the present invention;

fig. 2 is an exploded view of a perspective of a small computer host according to an embodiment of the present invention;

fig. 3 is an exploded view of another perspective of the main body of the small computer according to the embodiment of the present invention;

fig. 4 is an exploded view of the lower case, the heat dissipation module, the first interface board and the computer card module in the small computer host according to the embodiment of the present invention;

fig. 5 is a diagram illustrating a first interface board and a card module of a small computer according to an embodiment of the present invention;

fig. 6 is a diagram showing a lower case and a heat dissipation module in a small computer according to an embodiment of the present invention;

fig. 7 is a sectional view of the small computer host according to the embodiment of the present invention when the lower case and the heat dissipation module are assembled;

fig. 8 is an assembly view of the heat dissipation module and the cover plate in the small computer host according to the embodiment of the present invention;

fig. 9 is an exploded view of a heat dissipation module in a small computer host according to an embodiment of the present invention.

Reference numerals:

a housing 10;

an upper case 101;

a lower case 102;

a middle frame 1021;

a cover plate 1022;

the tongue edge 1022 a;

heat dissipation holes 1022 b;

the fastener 1022 c;

a first interface board 20;

a first connector 201;

USB interfaces 202a, 202 d;

an HDMI interface 202 b;

RJ45 interface 202 c;

a TF card interface 202 e;

a support column 203;

a positioning portion 2031;

a calculation module 21;

a data interface terminal 211;

a through hole 212;

a touch display screen 30;

a second interface board 40;

a VGA interface 401;

a hard disk 41;

a heat dissipation module 50;

a heat conducting plate 501;

flat tubes 502;

a heat dissipation block 503;

a heat dissipation fan 504.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention, and all other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", and the like, indicate the orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following describes a small-sized computer host according to an embodiment of the present invention in detail with reference to the drawings.

Referring to fig. 1 to 9, a small computer host according to an embodiment of the present invention includes a casing 10, a computer circuit board, and a touch display screen 30.

In particular, the chassis 10 may be configured in different shapes, i.e. in the example of fig. 1, in a rectangular box-like structure. The computer circuit board is arranged in the casing 10, and the computer circuit board is provided with a computing module 21, wherein the computing module 21 is a functional unit integrating at least an X86 framework processor and a memory into a whole. The display unit 30 is provided on the housing 10.

The computing module 21 may be a NUC computing module 21 (computer Element) of intel corporation, and the integrated computing module 21 has a small volume, so that the volume of the small computer host can be miniaturized. For example, the models are NUC6CAYH, NUC8i7HVK4, NUC8i7BEH6, NUC8i5BEK6 and other calculation modules.

The display unit 30 can be used as a display interface, and a user can display content through the display unit 30 without connecting to a display device through the first communication interface. The display unit 30 can be a display screen or a touch display screen, and the display screen can display contents, so that the small computer host can be used without an external display device. The touch display screen is convenient for displaying contents and carrying out interaction operation by a user, does not need external display equipment, mouse, keyboard and other interaction equipment, and is more convenient to carry and use.

It should be noted that, in the related art, a host computer (desktop computer) cannot be miniaturized, and therefore, the host computer is usually large in size and needs to be connected with an external display device, a man-machine-exchanged mouse, a keyboard and other devices for use in a matching manner, thereby causing a series of problems such as inconvenient carrying and limited use scene.

According to the embodiment of the utility model provides a small-size computer mainframe utilizes calculation module 21 and computer circuit board and casing 10 to constitute computer mainframe, and it is small, portable and use to, be provided with display element 30 on casing 10, so, to the user, can utilize display element 30 to show, carry out interactive operation even, make this computer mainframe need not connect external settings such as display screen, mouse and can use, its convenient to use does not receive the restriction of scene.

In an embodiment of the present invention, the power supply device further comprises a backup battery, the backup battery is disposed in the casing 10 and connected to the computer circuit board for supplying power to the computer circuit board for backup.

In this embodiment, a backup battery is configured in the housing 10, and the backup battery supplies power to the computer circuit board in a backup manner, for example, in the open air or under other conditions without an external power supply, the backup battery can supply power to the small computer host, so that the small computer host can be conveniently used in various different scenes, and the small computer host can be used more conveniently and flexibly.

In an embodiment of the present invention, the computer circuit board includes a first interface board 20, and the first interface board 20 is provided with a first connector 201 and a plurality of first communication interfaces. The first connector 201 on the first interface board 20 is used for connecting with the computing module 21, and the plurality of first communication interfaces are used for connecting with external devices, such as a mouse, a keyboard, a display screen, a speaker device, a network device, a mobile device, and the like.

The computing module 21 and the first interface board 20 are fixedly disposed in the housing 10, and a data interface 211 of the computing module 21 is plugged into the first connector 201. That is, the data interface end 211 of the computing module 21 is connected to the first connector 201 on the first interface board 20, so that the computing module 21 is connected to the first interface board 20, and when the first communication interface on the first interface board 20 is connected to an external device, data transmission between the external device and the computing module 21 can be realized.

Advantageously, the computing module 21 may further integrate one or more of the SSD solid state disk, the WIFI module, and the bluetooth module, for example, the NUC computing module 21 (computer Element) of intel corporation integrates the SSD solid state disk, the WIFI module, and the bluetooth module, so that the host computer has more performance options, for example, functions of conveniently implementing a WIFI wireless network, bluetooth communication, and the like, and meets the functional requirements of the user.

Referring to fig. 2 to 3, in some embodiments of the present invention, the computer circuit board further includes a second interface board 40 and a hard disk 41, wherein the second interface board 40 and the first interface board 20 are stacked in the casing 10, and the second interface board 40 has a second connector and a plurality of second communication interfaces. The hard disk 41 is fixedly arranged in the casing 10, and an interface of the hard disk 41 is plugged with the second connector.

That is to say, the second interface board 40 is stacked with the first interface board 20, and the second interface board 40 has a plurality of second communication interfaces, through which more external devices can be expanded and connected, so as to meet the connection requirements of different external devices. In addition, the hard disk 41 is connected to the second connector of the second interface board 40, so that the storage capacity of the computer host can be expanded through the hard disk 41, so that a user can store more data, and the requirement of the user on large-capacity storage is met.

It should be noted that, the second interface board 40 and the first interface board 20 adopt a split design, so that the configuration of the computer host is more flexible, and the first interface board 20 and/or the second interface board 40, the hard disk 41, and the like can be configured according to the selection of the user, thereby meeting the configuration requirements of the user.

Illustratively, the first communication interface and the second communication interface are one or more of USB interfaces 202A, 202D, VGA interface 401 and HDMI interface 202B, RJ45 interface 202C, TF card interface 202E, the USB interfaces 202A and 202D may be one or more of USB-micro interface, USB TYPE-a interface and USB TYPE-C interface, the USB interfaces 202A and 202D may be connected to USB peripherals, such as a mouse, a keyboard, a USB disk, etc., the VGA interface 401 and the HDMI interface 202B may be connected to video devices such as a display screen, the RJ45 interface 202C is connected to a network device through a network cable, and the TF card interface 202E may be plugged with a TF card, etc.

In one embodiment of the present invention, a speaker (not shown) for audio output is further disposed on the computer circuit board. For example, the speakers are configured on the first interface board 20 or the second interface board 40, so that the host computer has its own speakers, and can output audio through the speakers without external audio equipment such as a sound box.

Referring to fig. 1 to 3, in an embodiment of the present invention, a housing 10 includes an upper housing 101 and a lower housing 102, wherein the upper housing 101 is detachably connected to the lower housing 102; the first interface board 20 is fixedly disposed in the upper housing 101, and the second interface board 40 is fixedly disposed in the lower housing 102.

That is, the upper casing 101 and the lower casing 102 are detachably connected to form the casing 10, for example, the upper casing 101 and the lower casing 102 are fastened and fixed by a fastening member such as a screw, the second interface board 40 and the hard disk 41 are fixed in the upper casing 101, and the second interface board 40 and the computing module 21 are fixed in the lower casing 102, so that when the first interface board 20, the second interface board 40, the computing module 21 or the hard disk 41 needs to be replaced during detachment, the upper casing 101 and the lower casing 102 can be detached, and then the corresponding first interface board 20, the second interface board 40, the computing module 21 or the hard disk 41 can be replaced in the upper casing 101 or the lower casing 102, thereby forming a modular structure.

Referring to fig. 3 to 4 and 6 to 9, in some embodiments of the present invention, the heat dissipation module 50 further includes a heat dissipation module 50, the heat dissipation module 50 is disposed in the lower housing 102 and is close to the computing module 21, and the lower housing 102 is provided with heat dissipation holes 1022 b.

That is to say, in this embodiment, the heat dissipation module 50 dissipates heat to the computing module 21, so that it can be ensured that the host computer keeps a proper working temperature when working, and further ensure the performance stability and reliability of the computer. In addition, the heat dissipation module 50 is located in the lower housing 102, so as to be conveniently assembled with the computing module 21, and ensure that the computing module 21 is close to the heat dissipation module 50, thereby improving the heat dissipation effect.

Referring to fig. 5, in an embodiment of the present invention, a supporting column 203 is disposed on the first interface board 20, and the computing module 21 is supported by the supporting column 203 and is locked and fixed to the supporting column 203 by a first fastener.

The number of the support columns 203 may be multiple, the lower ends of the plurality of support columns 203 are located in the same plane, the upper surface of the computing module 21 may be attached to the plane where the lower ends of the plurality of support columns 203 are located, in addition, the computing module 21 has through holes 212, threaded holes opposite to the through holes 212 may be arranged on the support columns 203, and the first fastening members may be screws. When the computing module 21 is installed, the data interface end 211 of the computing module 21 may be plugged into the first connector 201, at this time, the upper surface of the computing module 21 is attached to the plane where the lower ends of the plurality of support columns 203 are located, the through hole 212 on the computing module 21 is opposite to the threaded hole on the support column 203, and then the computing module 21 is fixed on the first interface board 20 by passing a screw through the through hole 212 and then being in threaded connection with the threaded hole on the support column 203.

In this embodiment, the support column 203 is used to support the computing module 21, and the computing module 21 is fixed by the fastener, so that the computing module 21 can be stably and reliably mounted and is convenient to assemble. In addition, the computing module 21 has a gap with the first interface board 20 under the support of the support column 203, which is beneficial to heat dissipation of the computing module 21.

Optionally, the upper end of the supporting column 203 is provided with a positioning portion 2031, and the computing module 21 is provided with a positioning hole matched with the positioning portion 2031, so that the computing module 21 is more reliably fixed by using the matching of the positioning portion 2031 and the positioning hole on the computing module 21, and the assembly is more convenient and faster.

Referring to fig. 6 to 8, in some embodiments of the present invention, the lower housing 102 includes a middle frame 1021 and a cover 1022, wherein the cover 1022 covers the middle frame 1021 and is fixed to the middle frame 1021 by a second fastener. The first interface board 20 is fixed in the middle frame 1021 through a third fastener, the heat dissipation module 50 is fixed on the cover plate 1022 through a fourth fastener, the heat dissipation module 50 is close to the computing module 21, and the heat dissipation holes 1022b are formed in the cover plate 1022.

That is to say, in this embodiment, the lower housing 102 mainly includes a middle frame 1021 and a cover 1022, the first interface board 20 is fixed in the middle frame 1021 through a third fastener, the heat dissipation module 50 is fixed on the cover 1022 through a fourth fastener, and the cover 1022 and the middle frame 1021 are fixed through a second fastener, so that, during dismounting, if only the computing module 21 needs to be replaced, the cover 1022 can be opened after only the threaded fastener is dismounted, at this time, the cover 1022 and the heat dissipation module 50 are separated from the middle frame 1021 as a whole, the computing module 21 can be exposed in the middle frame 1021, and then the computing module 21 can be dismounted and replaced. If the interface needs to be replaced, the middle frame 1021 and the first interface board 20 can be replaced as a whole, and then the cover plate 1022 and the replaced middle frame 1021 are connected and fixed, so that the middle frame 1021 and the first interface board 20 form an interface module, the computing module 21 can be connected to the interface module in a plug-in manner, the upper shell 101 and the second interface board 40 form another interface module, and the hard disk 41 can be connected to the interface module in a plug-in manner.

Referring to fig. 6, in an embodiment of the present invention, two ends of the cover plate 1022 are provided with tongue edges 1022a extending upward, and two ends of the middle frame 1021 are provided with notches engaged with the tongue edges 1022 a; a buckling piece 1022c is arranged on the tongue edge 1022a, and a bayonet which is buckled and connected with the buckling piece 1022c is arranged on the inner wall of the middle frame 1021.

In this embodiment, the tongue edge 1022a of the cover plate 1022 is engaged with the notch of the middle frame 1021, the fastening piece 1022c of the tongue edge 1022a is connected with the bayonet of the middle frame 1021, and the cover plate 1022 and the middle frame 1021 are locked and fixed by the second fastener, so that the lower shell 102 formed by the cover plate 1022 and the middle frame 1021 has a firmer and more reliable structure and better integrity.

Referring to fig. 3 and 9, in an embodiment of the present invention, the heat dissipation module 50 includes a heat conduction plate 501, a flat tube 502, a heat dissipation block 503, and a heat dissipation fan 504. Wherein, the heat conducting plate 501 is attached to the computing module; one end of each flat tube 502 is attached to the heat transfer plate 501, and the flat tubes 502 are filled with a cooling medium; the heat dissipation block 503 is attached to the flat tube 502 and the heat conduction plate 501; the heat radiation fan 504 is provided at the other end of the flat tube 502 and adjacent to the heat radiation block 503 to blow out the heat of the heat radiation block 503 and the other end of the flat tube 502 to the outside of the casing 10. The heat transfer plate 501, the flat tubes 502, and the heat dissipation blocks 503 may be made of a metal material having good thermal conductivity, for example, the flat tubes 502 may be made of copper tubes, aluminum tubes, or the like, and the heat transfer plate 501 and the heat dissipation blocks 503 may be made of aluminum material or the like.

When the computing module 21 works, the heat generated by the computing module 21 is conducted to the heat conducting plate 501, and then conducted to one end of the flat tube 502 and the heat dissipating block 503 by the heat conducting plate 501, the cooling medium in the flat tube 502 absorbs the heat, the heat of the flat tube 502 can be conducted to the heat dissipating block 503, meanwhile, the heat dissipating fan 504 can blow the heat of the flat tube 502 and the heat dissipating block 503 out of the casing 10, and quickly dissipate the heat out of the casing 10 through the heat dissipating holes 1022b on the casing 10, so that the quick heat dissipation of the computing module 21 can be realized, the heat dissipating effect is improved, and the working performance of the computing module 21 is ensured to be stable and reliable.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims (10)

1. A small computer host, comprising:

a housing;

the computer circuit board is arranged in the shell and is provided with a computing module, and the computing module is a functional unit integrating at least an X86 framework processor and a memory into a whole;

and the display unit is arranged on the shell.

2. The mainframe according to claim 1, further comprising a backup battery, wherein the backup battery is disposed in the casing and connected to the computer circuit board for backup power supply of the computer circuit board.

3. The mainframe computer of claim 1, wherein the display unit is a display screen or a touch display screen.

4. The mainframe according to claim 1, wherein the computer circuit board comprises a first interface board, and the first interface board is provided with a first connector and a plurality of first communication interfaces; the computing module is provided with a data interface end; the computing module and the first interface board are fixedly arranged in the shell, and a data interface end of the computing module is plugged with the first connector.

5. The mainframe of a small computer according to claim 4, wherein the computer circuit board further comprises a second interface board and a hard disk, the second interface board and the first interface board are stacked in the housing, and the second interface board has a second connector and a plurality of second communication interfaces; the hard disk is fixedly arranged in the shell, and an interface of the hard disk is inserted into the second connector.

6. A small computer host as claimed in claim 1, wherein the computer circuit board is further provided with a speaker for audio output.

7. The mainframe according to claim 5, wherein the housing comprises an upper housing and a lower housing, the upper housing being detachably connected to the lower housing; the first interface board is fixedly arranged in the lower shell, and the second interface board is fixedly arranged in the upper shell.

8. The mainframe according to claim 7, further comprising a heat dissipation module disposed in the lower housing and adjacent to the computing module, wherein the lower housing has heat dissipation holes.

9. The mainframe according to claim 4, wherein a support column is provided on the first interface board, and the computing module is supported by the support column and is locked and fixed to the support column by a first fastener; the upper end of support column is equipped with location portion, be equipped with on the calculation module with location portion complex locating hole.

10. The mainframe of a small computer according to claim 8, wherein the heat dissipation module comprises:

the heat conducting plate is attached to the computing module;

one end of each flat tube is attached to the heat conducting plate, and a cooling medium is filled in each flat tube;

the heat dissipation block is attached to the flat tube and the heat conduction plate;

and the heat dissipation fan is arranged at the other end of the flat tube and is adjacent to the heat dissipation block so as to blow out the heat of the heat dissipation block and the other end of the flat tube to the outside of the machine shell.

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