Micro-processor

Abstract

The utility model provides a microprocessor, which comprises a single chip microcomputer and a wifi module connected with the single chip microcomputer, the single-chip microcomputer is provided with an interface assembly, a transmission interface and a voltage regulator are integrally installed on the single-chip microcomputer, and the single-chip microcomputer is connected with a power supply unit and an upper computer through the transmission interface. The voltage regulator is respectively connected with a usb input power supply and a wide voltage input power supply; an automatic downloading unit, a reset unit and a voltage-stabilized power supply unit are integrated on the single-chip microcomputer, the automatic downloading unit comprises a conversion chip, the voltage-stabilized power supply unit comprises a voltage stabilizer, the size of the single-chip microcomputer is 32mm * 26mm, and the thickness of the single-chip microcomputer is 8.7 mm + / -0.2 mm. According to the utility model, the structure is compact, the plate shape is small, the size is only 32mm * 26mm, the thickness is 8.7 mm + / -0.2 mm, and the requirements of small-space development and application can be met.

Description

Technical Field

[0001] The utility model belongs to the technical field of processors, and particularly relates to a microprocessor. Background Art

[0002] The processor is a central processing unit composed of one or several large-scale integrated circuits, which enables it to complete operations such as fetching instructions, executing instructions, and exchanging information with external memory and logic components.

[0003] In order to improve computing power and support multi-functions, existing processors need to be connected with more electrical components or modules and other computing units to handle more complex tasks and improve performance, which increases circuit complexity and area, resulting in a larger processor structure. This in turn increases the power consumption of the processor and increases production costs.

[0004] In view of this, how to solve the defects existing in the above technical solutions has become one of the problems to be solved urgently in the field of processor technology. Utility Model Content

[0005] In view of the problems existing in the background technology, the utility model provides a microprocessor, including a single-chip microcomputer, and a wifi module connected to the single-chip microcomputer; and the single-chip microcomputer is provided with an interface component, and the single-chip microcomputer is integrated with a transmission interface and a voltage regulator, and is connected to a power supply unit and a host computer through the transmission interface; the voltage regulator is respectively connected to a USB input power supply and a wide voltage input power supply; the single-chip microcomputer is integrated with an automatic download unit, a reset unit and a voltage-stabilized power supply unit, the automatic download unit includes a conversion chip, the voltage-stabilized power supply unit includes a voltage stabilizer, and the single-chip microcomputer has a size of 32mm*26mm and a thickness of 8.7mm±0.2mm.

[0006] Optionally, the USB input power supply adopts a 5V input power supply;

[0007] The wide voltage input power supply adopts a 4.75V-12V input power supply.

[0008] Optionally, the interface assembly includes a first connector and a second connector, and

[0009] The first connector and the second connector are integrated on the single chip microcomputer;

[0010] The centerline distance between the first connector and the second connector is 18.4 mm.

[0011] The centerline spacing between two adjacent groups of pins on the first connector and the second connector is 2.54 mm;

[0012] The inner pin spacing between the first connector and the second connector is 15.86 mm.

[0013] Optionally, the reset unit includes a BOOT switch, and

[0014] Integrated and installed on the single chip microcomputer;

[0015] The reset unit further includes a RESET switch, and

[0016] Integrated and installed on the single chip microcomputer;

[0017] The BOOT switch interface is grounded and connected to the resistor R12, and

[0018] Connect 3.3V power supply through resistor R12;

[0019] The circuit between the resistor R12 and the BOOT switch is connected to the DO interface of the first connector;

[0020] Another group of interfaces of the first connector DO is connected to one group of pins of the transistor Q2 in the reset logic circuit, and the other two groups of pins of the transistor Q2 are connected to the DTR pin of the conversion chip and the resistor R5 respectively, and

[0021] Connect the DTR pin RTS of the conversion chip 031 through the resistor R5.

[0022] Optionally, the connection port of the DTR pin RTS of the conversion chip 031 is connected to the pin S8050 of the transistor Q1 through a circuit; and

[0023] The other two groups of pins of the transistor Q1 are connected to the resistor R4 and the EN interface respectively; and

[0024] Connect the DTR pin of the conversion chip through the resistor R4;

[0025] The EN interface is another set of switches in series with the RESET switch, and

[0026] The RESET switch 045 is connected in parallel with capacitor C3, and

[0027] Two ends of the capacitor C3 are connected to the ground and a series resistor R3 respectively.

[0028] Optionally, pin 1 of the regulator is grounded,

[0029] Pin 2 of the regulator is connected to capacitor C6, and

[0030] Capacitor C8 is connected in parallel to both ends of the capacitor C6;

[0031] Pin 3 of the voltage regulator 061 is connected to capacitor C7,

[0032] The two ends of capacitor C7 are connected in parallel with capacitor C5, and

[0033] Connect the power supply VCC through the capacitor C7,

[0034] A transient voltage suppressor is provided in the circuit between the power supply VCC and the capacitor C7.

[0035] Optionally, the input end of the capacitor C5 is connected to a diode D1, and

[0036] Connect VUSB through diode D1.

[0037] Optionally, the TXD pin of the conversion chip is connected to U-TXD, and

[0038] Connect resistor R10 through U-TXD, and

[0039] Connect the RXD pin of the microcontroller through resistor R10;

[0040] The RXD pin of the conversion chip is connected to U-RXD, and

[0041] Connect resistor R9 through U-RXD, and

[0042] Connect the TXD pin of the microcontroller through resistor R9;

[0043] The V3 pin of the conversion chip 031 is connected to the capacitor C1, and

[0044] The output terminal of capacitor C1 is grounded;

[0045] The VCC pin of the conversion chip 031 is connected to a +5V power supply and a capacitor C4 104, respectively.

[0046] And capacitor C4 104 is grounded.

[0047] Optionally, the D0 interface end of the first connector is connected to a resistor R11, and

[0048] The third LED lamp is connected via the resistor R11 and is grounded via the third LED lamp;

[0049] The USB input power is connected to resistor R6, and

[0050] Connect the fourth LED lamp through resistor R6,

[0051] The output end of the fourth LED lamp is grounded;

[0052] The two groups of 3V3 pins of the second connector are respectively connected to the first LED lamp and the second LED lamp;

[0053] The first LED lamp is connected to a resistor R8, and

[0054] The output end of the resistor R8 is connected to TXD.

[0055] Optionally, the second LED lamp is connected to a resistor R7.

[0056] The output end of the resistor R7 is connected to RXD;

[0057] The third LED lamp 14 , the fourth LED lamp 15 , the first LED lamp 17 and the second LED lamp 20 are all integrated on the single chip microcomputer.

[0058] In summary, the beneficial effects of the utility model are:

[0059] (1) The utility model has a compact structure and a small plate shape, with a size of only 32mm*26mm and a thickness of 8.7mm±0.2mm, which can meet the development and application needs of small spaces.

[0060] (2) The utility model integrates a voltage regulator and a voltage-stabilized power supply unit on the single-chip microcomputer, and respectively connects a USB input power supply and a wide voltage input power supply through the voltage regulator; thereby enabling the microprocessor to be provided with a 5V power input through the USB interface, and also receiving a wide voltage of 4.5V-12V through the wide voltage input power interface to provide overall power supply, thereby improving practicality.

[0061] (3) The utility model provides a convenient and quick operation mode by adding two BOOT switches and a RESET switch to the single-chip microcomputer. It is easy to use, low-cost, widely applicable to various scenarios and easy to be widely promoted. By pressing the BOOT switch, the device can enter the download mode for firmware upgrade or other related operations. Pressing the RESET switch can reset the device and restore it to the default working state. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 This is a schematic diagram of the overall structure of a microprocessor according to an embodiment of the utility model;

[0063] Figure 2 This is a single chip circuit diagram of a microprocessor embodiment of the utility model;

[0064] Figure 3 A reset unit of a microprocessor in one embodiment of the utility model;

[0065] Figure 4 This is a single-chip reset logic circuit of a microprocessor embodiment of the utility model;

[0066] Figure 5 This is a diagram of a voltage-stabilized power supply unit of a microprocessor according to an embodiment of the utility model;

[0067] Figure 6 This is a USB input power circuit diagram of a microprocessor embodiment of the utility model;

[0068] Figure 7 An automatic download unit diagram for a microprocessor embodiment of the utility model;

[0069] Figure 8 It is a circuit diagram of an automatic download unit diagram of a microprocessor embodiment of the utility model connected to a single chip microcomputer;

[0070] Fig. 9 This is a circuit diagram of a first connector of a microprocessor according to an embodiment of the utility model;

[0071] Fig.10 This is a circuit diagram of a second connector of an embodiment of a microprocessor of the utility model;

[0072] Fig.11 This is a circuit diagram of the third state indicator light of a microprocessor in an embodiment of the utility model;

[0073] Fig.12 This is a circuit diagram of a fourth state indicator light of a microprocessor in an embodiment of the utility model;

[0074] Fig.13 This is a circuit diagram of a first state indicator light of a microprocessor according to an embodiment of the utility model;

[0075] Fig.14 This is a circuit diagram of a second state indicator light of a microprocessor according to an embodiment of the utility model.

[0076] Reference numerals:

[0077] 1. Wi-Fi module;

[0078] 2. Single chip microcomputer;

[0079] 3. Automatic download unit; 031. Conversion chip; 032. Capacitor C4; 033. Capacitor C1; 035. Resistor R10; 036. Resistor R9;

[0080] 4. Reset unit; 041. BOOT switch; 042. Capacitor C3; 043. Resistor R12; 044. Resistor R3; 045. RESET switch;

[0081] 5. Interface assembly; 051. First connector; 052. Second connector;

[0082] 6. Voltage stabilized power supply unit; 061. Voltage stabilizer; 062. Transient voltage suppressor; 063. Diode D1; 064. Capacitor C8; 065. Capacitor C6; 066. Capacitor C7; 067. Capacitor C5;

[0083] 7. Voltage regulator;

[0084] 8. Transmission interface;

[0085] 9. Power supply unit;

[0086] 10. USB input power supply;

[0087] 11. Wide voltage input power supply;

[0088] Reset logic circuit:

[0089] 121, resistor R4;

[0090] 122, transistor Q1;

[0091] 123, transistor Q2;

[0092] 124, resistor R5;

[0093] 13. Resistor R11;

[0094] 14. The third LED light;

[0095] 15. Fourth LED light;

[0096] 16. Resistor R6;

[0097] 17. The first LED light;

[0098] 18. Resistor R8;

[0099] 19. Resistor R7;

[0100] 20. Second LED indicator light. DETAILED DESCRIPTION

[0101] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. Although exemplary embodiments are disclosed in the accompanying drawings, it should be understood that the utility model can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to facilitate a thorough understanding of the utility model and to fully convey the concept of the utility model to those skilled in the art.

[0102] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0103] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0104] like Figures 1 to 14 As shown, this embodiment provides a microprocessor, including a single-chip microcomputer 2, and a wifi module 1 connected to the single-chip microcomputer 2; and the single-chip microcomputer 2 is provided with an interface component 5, and the single-chip microcomputer 2 is integrated with an automatic download unit 3, a reset unit 4 and a voltage-stabilized power supply unit 6, and the single-chip microcomputer 2 is provided with a transmission interface 8 and a voltage regulator 7, and the transmission interface 8 is connected to a power supply unit 9 and a host computer that converts AC or DC into the voltage or current required by the device; the voltage regulator 7 is preferably an AMS11173.3V voltage regulator; and the USB input power supply 10 and the wide voltage input power supply 11 are respectively connected through the voltage regulator 7; the single-chip microcomputer 2 has a size of 32mm*26mm and a thickness of 8.7mm±0.2mm;

[0105] The voltage-stabilized power supply unit 6 includes a voltage stabilizer 061,

[0106] The reset unit 4 includes a BOOT switch 041 and is arranged on the single chip computer 2;

[0107] The reset unit 4 further includes a RESET switch 045, and is disposed on the single chip computer 2;

[0108] The automatic download unit 3 includes a conversion chip 031;

[0109] The automatic download unit includes an automatic download circuit;

[0110] The reset unit includes a reset circuit;

[0111] The voltage-stabilized power supply unit includes a voltage-stabilized power supply circuit.

[0112] Furthermore, the USB input power supply 10 adopts a 5V input power supply;

[0113] The wide voltage input power supply 11 adopts a 4.75V-12V input power supply.

[0114] In this embodiment, the utility model has a compact structure and a small plate shape, with a size of only 32mm*26mm and a thickness of 8.7mm±0.2mm, which can meet the development and application needs of small spaces.

[0115] See also Figure 1 , Fig. 9 and Fig.10 As shown, the interface component 5 includes a first connector 051 and a second connector 052, and the first connector 051 and the second connector 052 are integrated on the single chip microcomputer.

[0116] Furthermore, the centerline spacing between the first connector 051 and the second connector 052 is 18.4 mm, the centerline spacing between two adjacent groups of pins on the first connector 051 and the second connector 052 is 2.54 mm; the inner side pin spacing between the first connector and the second connector is 15.86 mm.

[0117] Furthermore, the BOOT switch 041 interface arranged on the reset circuit is grounded and connected to the resistor R12043 respectively, and is connected to a 3.3V power supply through the resistor R12043; the circuit located between the resistor R12043 and the BOOT switch 041 is connected to the DO interface of the first connector 051; another group of interfaces of the first connector 051DO is connected to one group of pins of the transistor Q2123 in the reset logic circuit 12, and the other two groups of pins of the transistor Q2123 are respectively connected to the DTR pin of the conversion chip 031 of the automatic download unit 3 and the resistor R5124, and are connected to the DTR pin RTS of the conversion chip 031 of the automatic download unit 3 through the resistor R5124.

[0118] Furthermore, the connection port of the DTR pin RTS of the conversion chip 031 arranged on the automatic download circuit is connected to the pin S8050 of the transistor Q1 122 through the circuit; and the other two groups of pins of the transistor Q1 122 are respectively connected to the resistor R4 121 and the EN interface; and the DTR pin of the conversion chip 031 of the automatic download unit 3 is connected through the resistor R4 121.

[0119] Further, the EN another group of interfaces is connected in series with a RESET switch 045, and the RESET switch 045 is connected in parallel with a capacitor C3 042, and both ends of the capacitor C3 042 are respectively grounded and connected in series with a resistor R3 044, and is connected to a 0443.3V power supply through the resistor R3.

[0120] In this embodiment, by pressing the BOOT switch 041, the device can enter the download mode to perform firmware upgrades or other related operations. Pressing the RESET switch 045 can reset the device to restore it to the default working state. By adding two BOOT switches 041 and RESET switch 045 to the single-chip microcomputer, a convenient and fast operation method is provided. It is simple and easy to use, low cost, widely applicable to scenarios, and easy to be widely promoted.

[0121] See also Figure 5 As shown, the pin 1 of the voltage regulator 061 disposed in the voltage-regulated power supply circuit is grounded, the pin 2 of the voltage regulator 062 is connected to the capacitor C6 104, and the two ends of the capacitor C6 104 are connected in parallel with the capacitor C8 106, and the 3.3V power supply is connected through the capacitor C8 106. It can output a 3.3V voltage for use by external devices.

[0122] Furthermore, pin 3 of the voltage regulator 061 is connected to capacitor C7 106 , and capacitor C5 104 is connected in parallel to both ends of capacitor C7 106 , and power supply VCC is connected via capacitor C7 106 , and a transient voltage suppressor 062 is provided in the circuit between power supply VCC and capacitor C7 106 .

[0123] Furthermore, the input end of the capacitor C5 104 is connected to a diode D1 063 , and is connected to VUSB via the diode D1 063 .

[0124] The utility model adds a voltage-stabilizing power supply unit and adds a diode D1063 on the voltage-stabilizing power supply unit to prevent operation errors from causing damage to the entire chip; and a self-recovery fuse can be replaced according to needs;

[0125] By integrating and adding a voltage-stabilizing power supply unit 6 on the single-chip microcomputer, an input voltage of 4.5 to 12V can be tolerated, thereby providing a reliable power supply for the single-chip microcomputer.

[0126] In this embodiment, a voltage regulator 7 and a voltage-stabilized power supply unit are integrated on the single-chip computer, and the USB input power supply 10 and the wide voltage input power supply 11 are respectively connected through the voltage regulator 7; thereby, it supports the use of the USB interface to provide 5V power input for the microprocessor, and can also receive a wide voltage (4.5V-12V) through the wide voltage input power supply interface to provide overall power supply for it, thereby improving practicality.

[0127] See also Figure 7 As shown, the TXD pin of the conversion chip 031 arranged on the automatic download circuit is connected to U-TXD, and is connected to a resistor R10 through U-TXD, and is connected to the RXD pin of the microcontroller 2 through the resistor R10;

[0128] The RXD pin of the conversion chip 031 is connected to U-RXD, and is connected to resistor R9 through U-RXD, and is connected to the TXD pin of the microcontroller through resistor R9.

[0129] Furthermore, the V3 pin of the conversion chip 031 is connected to the capacitor C1 104, and the output end of the capacitor C1 104 is grounded. The capacitor C1 can stabilize the voltage supply, reduce interference with the chip function, and thus improve the stability and reliability of the system.

[0130] The VCC pin of the conversion chip 031 is connected to a +5V power supply and a capacitor C4 104 respectively, and the capacitor C4 104 is grounded.

[0131] In this embodiment, an automatic download unit is integrated on the single-chip microcomputer to make it have the characteristics of simple layout and easy use, and it is connected to the host computer through the Type-C interface to realize the functions of serial port communication and program burning.

[0132] See also Fig.11 As shown, the D0 interface end of the first connector 051 is connected to the resistor R11 13, and is connected to the third LED lamp 14 through the resistor R11 13, and is grounded through the third LED lamp 14.

[0133] See also Fig.12 As shown, the USB input power source 10 is connected to the resistor R6 16, and is connected to the fourth LED lamp 15 through the resistor R6 16, and the output end of the fourth LED lamp 15 is grounded.

[0134] See also Fig.13 As shown, the two groups of 3V3 pins of the second connector 052 are connected to the first LED lamp 17 and the second LED lamp 20 respectively; the first LED lamp 17 is connected to the resistor R8 18, and the output end of the resistor R8 is connected to TXD.

[0135] Furthermore, the second LED lamp 20 is connected to a resistor R719, and an output end of the resistor R719 is connected to RXD.

[0136] Furthermore, the third LED lamp 14 , the fourth LED lamp 15 , the first LED lamp 17 and the second LED lamp 20 are all integrated on the single chip microcomputer.

[0137] In this embodiment, by integrating the third LED light 14, the fourth LED light 15, the first LED light 17 and the second LED light 20 in the single-chip microcomputer, the working status of the single-chip microcomputer can be displayed to facilitate users or maintenance personnel to quickly understand the working status of the equipment; it can also serve as part of user interaction and respond to user input and output by changing the flashing frequency.

[0138] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not restrictive. Although the utility model is described in detail with reference to the embodiments, it should be understood by those skilled in the art that any modification or equivalent replacement of the technical solution of the utility model does not deviate from the spirit and scope of the technical solution of the utility model, and should be included in the scope of the claims of the utility model.

Claims

1. A microprocessor, characterized in that: Including microcontroller, and a wifi module connected to the single chip microcomputer; and The single chip microcomputer is provided with an interface component, and The single chip microcomputer is integrated with a transmission interface and a voltage regulator, and Connect the power supply unit and the host computer through the transmission interface; The voltage regulator is connected to the USB input power supply and the wide voltage input power supply respectively; The single chip microcomputer is integrated with an automatic download unit, a reset unit and a voltage-stabilized power supply unit. The automatic download unit includes a conversion chip, The voltage-stabilized power supply unit includes a voltage stabilizer, The size of the single chip computer is 32mm*26mm, and the thickness is 8.7mm±0.2mm.

2. A microprocessor according to claim 1, characterized in that: The USB input power supply adopts 5V input power supply; The wide voltage input power supply adopts a 4.75V-12V input power supply.

3. A microprocessor according to claim 1, characterized in that: The interface assembly includes a first connector and a second connector, and The first connector and the second connector are integrated on the single chip microcomputer; The centerline distance between the first connector and the second connector is 18.4 mm. The centerline spacing between two adjacent groups of pins on the first connector and the second connector is 2.54 mm; The inner pin spacing between the first connector and the second connector is 15.86 mm.

4. A microprocessor according to claim 1, characterized in that: The reset unit includes a BOOT switch, and Integrated and installed on the single chip microcomputer; The reset unit further includes a RESET switch, and Integrated and installed on the single chip microcomputer; The BOOT switch interface is grounded and connected to the resistor R12, and Connect 3.3V power supply through resistor R12; The circuit between the resistor R12 and the BOOT switch is connected to the DO interface of the first connector; Another group of interfaces of the first connector DO is connected to one group of pins of the transistor Q2 in the reset logic circuit. The other two groups of pins of the transistor Q2 are connected to the DTR pin of the conversion chip and the resistor R5 respectively, and Connect the DTR pin RTS of the conversion chip 031 through the resistor R5.

5. A microprocessor according to claim 4, characterized in that: The connection port of the DTR pin RTS of the conversion chip 031 is connected to the pin S8050 of the transistor Q1 through a circuit; and The other two groups of pins of the transistor Q1 are connected to the resistor R4 and the EN interface respectively; and Connect the DTR pin of the conversion chip through the resistor R4; The EN interface is another set of switches in series with the RESET switch, and The RESET switch 045 is connected in parallel with capacitor C3, and Two ends of the capacitor C3 are connected to the ground and a series resistor R3 respectively.

6. A microprocessor according to claim 1, characterized in that: Pin 1 of the regulator is grounded, Pin 2 of the regulator is connected to capacitor C6, and Capacitor C8 is connected in parallel to both ends of the capacitor C6; Pin 3 of the voltage regulator 061 is connected to capacitor C7, The two ends of capacitor C7 are connected in parallel with capacitor C5, and Connect the power supply VCC through the capacitor C7, A transient voltage suppressor is provided in the circuit between the power supply VCC and the capacitor C7.

7. A microprocessor according to claim 6, characterized in that: The input end of the capacitor C5 is connected to the diode D1, and Connect VUSB through diode D1.

8. A microprocessor according to claim 1, characterized in that: The TXD pin of the conversion chip is connected to U-TXD, and Connect resistor R10 through U-TXD, and Connect the RXD pin of the microcontroller through resistor R10; The RXD pin of the conversion chip is connected to U-RXD, and Connect resistor R9 through U-RXD, and Connect the TXD pin of the microcontroller through resistor R9; The V3 pin of the conversion chip 031 is connected to the capacitor C1, and The output terminal of capacitor C1 is grounded; The VCC pin of the conversion chip 031 is connected to a +5V power supply and a capacitor C4 104, respectively. And capacitor C4 104 is grounded.

9. A microprocessor according to claim 3, characterized in that: The D0 interface end of the first connector is connected to a resistor R11, and A third LED lamp is connected via a resistor R11 and is grounded via the third LED lamp; The USB input power is connected to resistor R6, and Connect the fourth LED lamp through resistor R6, The output end of the fourth LED lamp is grounded; The two groups of 3V3 pins of the second connector are respectively connected to the first LED lamp and the second LED lamp; The first LED lamp is connected to a resistor R8, and The output end of the resistor R8 is connected to TXD.

10. A microprocessor according to claim 9, characterized in that: The second LED lamp is connected to a resistor R7, The output end of the resistor R7 is connected to RXD; The third LED lamp (14), the fourth LED lamp (15), the first LED lamp (17) and the second LED lamp (20) are all integrated on the single chip microcomputer.

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