CN206431619U - A kind of electronic calculator of simple type - Google Patents

Abstract

The utility model discloses a simple electronic calculator, which comprises a memory, a casing, a solar power supply module, a wireless network module, a power supply device, an LCD display, a USB interface device, a keyboard, and an RS232 communication device; the wireless network module and processing The wireless network module has a built-in wireless network receiver and a wireless network transmitter, which are used to connect to the wireless device terminal, and transmit the calculated mathematical operation results to the wireless intelligent terminal through the wireless device, so that users can view the calculation anytime, anywhere As a result, the wireless device terminals include smart phones and IPADs with wireless reception functions to complete mathematical calculations and wireless transmissions. The utility model realizes the calculation and remote transmission of mathematical formulas, has the characteristics of simple operation and convenient use, and can produce good economic and social benefits.

Description

A simple electronic calculator

technical field

The invention relates to the technical field of enterprise management, more specifically, to a simple electronic calculator.

Background technique

In recent years, the calculation of mathematical formulas often encounters such as square root operation, cubic operation, sine function operation, cosine function operation, tangent function operation, cosine function operation, arcsine function operation, arccosine function operation, arctangent function operation , Inverse cosine function operation, differential function operation, integral function operation, exponential function operation, logarithmic function operation and other function operations, the calculation formula is complicated, the settlement result is generally difficult to obtain, manual calculation is time-consuming and laborious, and its calculation cost is high.

General mathematical calculators can meet the requirements of simple calculations, but the previous electronic calculator systems cannot meet the above calculation requirements.

There are some following disadvantages in the electronic calculators in the past:

(1) Previous electronic calculators did not use memory, casing, solar power supply module, wireless network module, power supply device, LCD display, USB interface device, keyboard, RS232 communication device, and their structure was complex and inconvenient to operate;

(2) The previous electronic calculators did not use solar power supply modules. When there is sunlight, the solar power supply modules cannot be used for power supply. This does not solve the problem of insufficient electricity for the calculator due to field power supply, and cannot guarantee a simple electronic calculator. The calculator is functioning normally;

(3) The previous electronic calculators did not use solar power supply modules. When there is sunlight, the solar power supply modules cannot be used for power supply. This does not solve the problem of insufficient electricity for the calculator due to field power supply, and cannot guarantee a simple electronic calculator. The calculator is functioning normally;

(4) The previous electronic calculators did not use wireless network modules to transmit the calculation results of mathematical formulas, which cannot solve the problem that general calculators cannot transmit mathematical formulas to smart phones and IPADs due to lack of network devices, and do not have the ability to receive mathematical formulas;

(5) The electronic calculators in the past did not use USB interface devices, and could not be connected to computers through USB interfaces and data lines, which could not improve the calculation ability of mathematical formulas, did not have convenient interfaces, complicated operations, and were inconvenient to use;

(6) The electronic calculators in the past cannot realize the calculation of mathematical formulas and the management of mobile terminals, which cannot save manpower, have low production efficiency, and cannot produce good economic and social benefits.

Contents of the invention

The utility model provides a simple electronic calculator in order to overcome the above disadvantages.

Technical scheme of the present invention is as follows:

A simple electronic calculator, including a memory, a casing, a solar power supply module, a wireless network module, a power supply device, an LCD display, a USB interface device, a keyboard, and an RS232 communication device; the casing is provided with a memory, and the Storer comprises SDRAM memory, CF card memory, and described SDRAM memory, CF card memory are connected with processor respectively, and described SDRAM memory stores mathematical formula, arithmetic operation table, and the needs calculation mathematical formula of described CF card memory store , symbol; the LCD display is installed in the middle of the shell, used to display the symbols and results of mathematical operations, the LCD display is connected to the controller; the solar power supply module is connected to the processor for solar energy Power supply; the power supply device is installed on the upper end of the shell, and the power supply device is provided with an AC power supply device, a socket, and a power module; the power supply module is provided with a lithium battery, and the AC power supply device, the power module and the processing The wireless network module is connected with the processor, and the wireless network module has a built-in wireless network receiver and a wireless network transmitter, which are used to connect to the wireless device terminal and transmit the calculated mathematical operation results through the wireless device On the wireless intelligent terminal, it is convenient for the user to check the calculation results anytime and anywhere. The wireless device terminal includes a smart phone and an IPAD with a wireless receiving function to complete mathematical calculation and wireless transmission.

Further, the keyboard is installed on the outer end of the casing.

Further, the keyboard is connected with the processor.

Further, the keyboard includes number keys, up keys, down keys, and function keys.

Further, the number keys include 1, 2, 3...9.

Further, the number keys also include a 0 key, a 0.0 key, and a 0.00 key.

Further, the function keys include F1 key, F2 key and F3 key.

Further, the F1 key includes a sine function processing system, a cosine function processing system, a tangent function processing system, a cotangent function processing system, an arcsine function processing system, an arccosine function processing system, an arctangent function processing system, an arccos cut function processing system.

Further, the F1 key also includes a common differential function operation processing system and a special differential function operation processing system.

Further, the F1 key is also commonly used with an integral function calculation processing system and a special integral function calculation processing system.

Further, the said F2 includes a return key and a page turning key.

Further, the F3 key includes a custom function key.

Further, the USB interface device is provided with a USB interface and a data line.

Further, the USB interface device is connected to the processor, and the USB interface device is connected to the computer through a USB interface and a data line.

Further, the RS232 communication device is connected with the processor.

Further, the RS232 communication device is connected with the network communication equipment, and transmits operation symbols of mathematical formulas.

Compared with the prior art, the utility model invention has the following advantages and outstanding effects:

(1), a kind of simple electronic calculator that the present invention adopts, comprises memory, shell, solar power supply module, wireless network module, power supply device, LCD display, USB interface device, keyboard, RS232 communication device; Described shell It is provided with memory, and described memory comprises SDRAM memory, CF card memory, and described SDRAM memory, CF card memory are connected with processor respectively, and described SDRAM memory stores mathematical formula, arithmetic operation table, and described CF The card memory stores the mathematical formulas and symbols that need to be calculated; the LCD display is installed in the middle of the casing for displaying the symbols and results of mathematical operations, and the LCD display is connected to the controller; the solar power supply module is connected to the The processors are connected for solar power supply; the power supply device is installed on the upper end of the shell, and the power supply device is provided with an AC power supply device, a socket, and a power module; the power supply module is provided with a lithium battery, and the The AC power supply unit and the power supply module are connected to the processor; the wireless network module is connected to the processor, and the wireless network module has a built-in wireless network receiver and a wireless network transmitter for connecting to the wireless device terminal and computing The mathematical calculation results are transmitted to the wireless intelligent terminal through the wireless device, so that users can view the calculation results anytime and anywhere. The wireless device terminal includes a smart phone and an IPAD with a wireless receiving function to complete mathematical calculation and wireless transmission;

(2), the memory that the present invention adopts comprises SDRAM memory, CF card memory, and described SDRAM memory, CF card memory are connected with processor respectively, and described SDRAM memory stores mathematical formula, arithmetic operation table, and described CF Card memory storage needs to calculate mathematical formulas and symbols;

(3), the solar power supply module used in the present invention is connected with the processor for solar power supply; the power supply device is installed on the upper end of the casing, and the power supply device is provided with an AC power supply device, a socket, and a power supply module; The power module described above is provided with a lithium battery, and the AC power supply unit and the power module are connected to the processor; the wireless network module is connected to the processor;

(4) The wireless network module used in the present invention is connected to the processor. The wireless network module has a built-in wireless network receiver and a wireless network transmitter, which are used to connect to the wireless device terminal, and pass the calculated mathematical operation results through the wireless device Transmitting to the wireless intelligent terminal, it is convenient for the user to check the calculation result anytime and anywhere. The wireless device terminal includes a smart phone and an IPAD with a wireless receiving function to complete mathematical calculation and wireless transmission;

(5), the keyboard used in the present invention is installed on the outer end of the shell; the keyboard is connected to the processor; the keyboard includes number keys, up keys, down keys, and function keys; the number keys include 1 , 2, 3...9; the number keys also include 0 keys, 0.0 keys, and 0.00 keys; the function keys include F1 keys, F2 keys, and F3 keys; the F1 keys include sine function processing systems, Cosine function processing system, tangent function processing system, cotangent function processing system, arcsine function processing system, arccosine function processing system, arctangent function processing system, inverse cotangent function processing system; the F1 key also includes commonly used differential Function operation processing system, special differential function operation processing system; the F1 key is also commonly used integral function operation processing system, special integral function operation processing system; the F2 includes key return key, page turning key; Including custom function keys;

(6), the USB interface device that the present invention adopts is provided with USB interface, data line; Described USB interface device is connected with processor, and described USB interface device is connected with computer through USB interface, data line;

(7) The RS232 communication device used in the present invention is connected to the processor; the RS232 communication device is connected to the network communication equipment to transmit the operation symbols of mathematical formulas.

In addition to the above, the present invention uses a solar power supply module. When there is sunlight, the solar power supply module can be used for power supply, which solves the problem of insufficient electricity for the calculator due to field power supply. Using the solar power supply module for power supply ensures a simple The electronic calculator operates normally; the present invention uses the wireless network module to transmit the calculation results of mathematical formulas, which solves the problem that general calculators cannot transmit mathematical formulas to smart phones and IPADs without network devices, and has the ability to receive mathematical formulas; the present invention also The USB interface device is connected with a computer through a USB interface and a data line, which improves the calculation ability of mathematical formulas, has the characteristics of convenient interface, simple operation, and convenient use, and can generate good economic and social benefits.

Other advantages, objectives and features of the present utility model will be set forth in the following specification to some extent, and to some extent, will be obvious to those skilled in the art based on the investigation and research below, or can be Get teaching from the practice of the utility model. The objectives and other advantages of the utility model can be realized and obtained by the following description and claims.

Description of drawings

Fig. 1 is the structural representation of a kind of simple electronic calculator of the present invention;

Markings in the figure: 1. CF card memory, 2. SDRAM memory, 3. memory, 4. shell, 5. solar power supply module, 6. wireless network module, 7. AC power supply device, 8. socket, 9. lithium battery, 10. Power supply device, 11. LCD display, 12. USB interface device, 13 keyboard, 14. RS232 communication device.

Fig. 2 is the relational diagram of the connection structure of the controller in a kind of simple electronic calculator of the present invention;

Fig. 3 is a flowchart of a simple electronic calculator according to the present invention to realize the calculation of mathematical formulas and the remote wireless transmission process.

detailed description

Implementation example 1

In order to enable those skilled in the art to better understand the technical solution of the present invention, and to make the above-mentioned purpose, features and advantages of the present invention more obvious and comprehensible, the present invention and its implementations will be further described in detail below in conjunction with the accompanying drawings.

As shown in Figures 1 and 2, as shown in Figure 1, a simple electronic calculator includes a memory 3, a casing 4, a solar power supply module 5, a wireless network module 6, a power supply device 10, an LCD display 11, and a USB interface Device 12, keyboard 13, RS232 communication device 14; Described shell 4 is provided with memory 3, and described memory 3 comprises SDRAM memory, CF card memory, and described SDRAM memory, CF card memory are connected with processor respectively , the SDRAM memory stores mathematical formulas and arithmetic operation tables, and the required calculation mathematical formulas and symbols stored in the CF card memory; the LCD display 11 is installed in the middle position of the shell 4, and is used to display the symbols of mathematical operations and As a result, the LCD display 11 is connected with the controller; the solar power supply module 5 is connected with the processor for solar power supply; the power supply device 10 is installed on the upper end of the casing 4, and the power supply device 10 is provided with AC power supply device 7, socket 8, power supply module 9; Described power supply module 9 is provided with lithium battery, and described AC power supply device 7, power supply module 9 are connected with processor; Described wireless network module 6 Connected with the processor, the wireless network module 6 has a built-in wireless network receiver and a wireless network transmitter, which are used to connect to the wireless device terminal, and transmit the calculated mathematical operation results to the wireless intelligent terminal through the wireless device, so that the user can use it at any time The calculation results can be viewed anywhere. The wireless device terminals include smart phones and IPADs with wireless reception functions to complete mathematical calculations and wireless transmissions.

As a further preferred embodiment, the processor uses STC12C5A60S as the core processor of a simple electronic calculator.

The invention adopts a solar power supply module, and when there is sunlight, the solar power supply module can be used for power supply, which solves the problem of insufficient power of the calculator due to field power supply, and uses the solar power supply module for power supply to ensure that a simple electronic calculator works normally Running is another notable feature of the present invention.

Again, a kind of simple electronic calculator that the present invention adopts comprises memory, shell, solar power supply module, wireless network module, power supply device, LCD display, USB interface device, keyboard, RS232 communication device; There is memory, and described memory comprises SDRAM memory, CF card memory, and described SDRAM memory, CF card memory are connected with processor respectively, and described SDRAM memory stores mathematical formula, arithmetic operation table, and described CF card memory Stored mathematical formulas and symbols that need to be calculated; the LCD display is installed in the middle of the casing for displaying symbols and results of mathematical operations, and the LCD display is connected to the controller; the solar power supply module is connected to the processor connected with each other for solar power supply; the power supply device is installed on the upper end of the shell, and the power supply device is provided with an AC power supply device, a socket, and a power module; the power supply module is provided with a lithium battery, and the AC power supply The device and the power supply module are connected to the processor; the wireless network module is connected to the processor, and the wireless network module has a built-in wireless network receiver and a wireless network transmitter, which are used to connect to the wireless device terminal and calculate the mathematical The calculation result is transmitted to the wireless intelligent terminal through the wireless device, which is convenient for users to view the calculation result anytime and anywhere. The wireless device terminal includes a smart phone and an IPAD with a wireless receiving function, and completes mathematical calculation and wireless transmission, which is a significant aspect of the present invention. features.

Again, the memory that the present invention adopts comprises SDRAM memory, CF card memory, and described SDRAM memory, CF card memory are connected with processor respectively, and described SDRAM memory stores mathematical formula, arithmetic operation table, and described CF card memory The storage needs to calculate mathematical formulas and symbols, which is another notable feature of the present invention.

Also, the solar power supply module adopted in the present invention is connected with the processor for solar power supply; the power supply device is installed on the upper end of the shell, and the power supply device is provided with an AC power supply device, a socket, and a power supply module; The power module is provided with a lithium battery, and the AC power supply unit and the power module are connected to the processor; the wireless network module is connected to the processor, which is another notable feature of the present invention.

The present invention uses the wireless network module to transmit the calculation results of mathematical formulas, which solves the problem that general calculators cannot transmit mathematical formulas to smart phones and IPADs due to the lack of network devices, and the ability to receive mathematical formulas is another notable feature of the present invention.

In addition, the wireless network module used in the present invention is connected to the processor, and the wireless network module has a built-in wireless network receiver and a wireless network transmitter, which are used to connect to the wireless device terminal, and transmit the calculated mathematical operation results to the On the wireless smart terminal, it is convenient for users to view the calculation results anytime and anywhere. The wireless device terminal includes a smart phone and an IPAD with a wireless receiving function to complete mathematical calculation and wireless transmission, which is another notable feature of the present invention.

Further as a preferred embodiment, the keyboard 13 is installed at the outer end of the casing 4 .

Further as a preferred embodiment, the keyboard 13 is connected to the processor.

Further as a preferred embodiment, the keyboard 13 includes number keys, up keys, down keys, and function keys.

As a further preferred embodiment, the number keys include 1, 2, 3...9.

As a further preferred embodiment, the number keys also include a 0 key, a 0.0 key, and a 0.00 key.

As a further preferred embodiment, the function keys include F1 key, F2 key and F3 key.

Further as a preferred embodiment, the F1 key includes a sine function processing system, a cosine function processing system, a tangent function processing system, a cotangent function processing system, an arcsine function processing system, an arccosine function processing system, and an arctangent function processing system System, inverse cotangent function processing system.

As a further preferred embodiment, the F1 key further includes a common differential function operation processing system and a special differential function operation processing system.

As a further preferred embodiment, the F1 key is also commonly used with an integral function calculation and processing system, or a special integral function calculation and processing system.

As a further preferred embodiment, the F2 includes the key return key and page turning key.

As a further preferred implementation, the F3 key includes a custom function key.

And, the keyboard that the present invention adopts is installed on the outer end of shell; Described keyboard is connected with processor; Described keyboard comprises number key, up key, down key, function key; Described number key comprises 1,2 , 3...9; the number keys also include 0 keys, 0.0 keys, and 0.00 keys; the function keys include F1 keys, F2 keys, and F3 keys; the F1 keys include sine function processing systems, cosine function Processing system, tangent function processing system, cotangent function processing system, arcsine function processing system, arccosine function processing system, arctangent function processing system, inverse cotangent function processing system; the F1 key also includes commonly used differential function operations Processing system, special differential function operation processing system; described F1 key is also commonly used integral function operation processing system, special integral function operation processing system; described F2 includes key return key, page turning key; described F3 key includes automatic Defining the function keys is another notable feature of the present invention.

As a further preferred embodiment, the USB interface device 12 is provided with a USB interface and a data line.

As a further preferred embodiment, the USB interface device 12 is connected to the processor, and the USB interface device is connected to the computer through a USB interface and a data cable.

Again, the USB interface device that the present invention adopts is provided with USB interface, data line; Described USB interface device is connected with processor, and described USB interface device is connected with computer by USB interface, data line, is another one of the present invention Notable features.

Further as a preferred embodiment, the RS232 communication device 14 is connected to the processor.

As a further preferred embodiment, the RS232 communication device 14 is connected to network communication equipment to transmit operation symbols of mathematical formulas.

In addition, the RS232 communication device used in the present invention is connected with the processor; the RS232 communication device is connected with the network communication equipment to transmit the operation symbols of mathematical formulas, which is another notable feature of the present invention.

Implementation Example 2

A simple electronic calculator realizes the calculation of mathematical formulas and the process of remote wireless transmission, as shown in Figure 3; it includes a simple electronic calculator, which starts to work; power supply device, solar power supply module power supply; keyboard Input the mathematical formula; the processor works; judges whether the calculation of the mathematical formula is completed; the wireless network module works; the USB interface device works; the RS232 communication device works;

Step 1: A simple electronic calculator starts to work;

Step 2: Power supply from the power supply device and solar power supply module, including the following steps:

(1), power supply device power supply;

(2), solar power supply module power supply.

Step 3: Keyboard input mathematical formula;

Step 4: Processor work;

Step 5: judging whether the calculation of the mathematical formula is completed;

Case 1. If the calculation of the mathematical formula has not been completed, perform step 3 and enter the mathematical formula with the keyboard;

Situation 2: If the calculation of the mathematical formula is completed, go to step 6;

Step 6: The wireless network module works; the USB interface device works; the RS232 communication device works, specifically including the following steps:

(1), the wireless network module works;

(2), USB interface device work;

(3), RS232 communication device works.

Step 7: Realize the calculation of mathematical formulas and remote wireless transmission.

Notable features of the present invention:

1), a kind of simple electronic calculator that the present invention adopts, comprises memory, casing, solar power supply module, wireless network module, power supply device, LCD display, USB interface device, keyboard, RS232 communication device; On the described casing Be provided with memory, described memory comprises SDRAM memory, CF card memory, described SDRAM memory, CF card memory are connected with processor respectively, and described SDRAM memory stores mathematical formula, arithmetic operation table, and described CF card The memory stores the mathematical formulas and symbols that need to be calculated; the LCD display is installed in the middle of the casing for displaying the symbols and results of mathematical operations, and the LCD display is connected to the controller; the solar power supply module and the processing The device is connected for solar power supply; the power supply device is installed on the upper end of the casing, and the power supply device is provided with an AC power supply device, a socket, and a power module; the power module is provided with a lithium battery, and the AC The power supply device and the power supply module are connected to the processor; the wireless network module is connected to the processor, and the wireless network module has a built-in wireless network receiver and a wireless network transmitter for connecting to the wireless device terminal, and the calculated Mathematical calculation results are transmitted to wireless intelligent terminals through wireless devices, which is convenient for users to view calculation results anytime and anywhere. The wireless device terminals include smart phones and IPADs with wireless receiving functions to complete mathematical calculations and wireless transmission.

2), the memory that the present invention adopts comprises SDRAM memory, CF card memory, and described SDRAM memory, CF card memory are connected with processor respectively, and described SDRAM memory stores mathematical formula, arithmetic operation table, and described CF card The memory stores mathematical formulas and symbols that need to be calculated.

3) The solar power supply module used in the present invention is connected with the processor for solar power supply; the power supply device is installed on the upper end of the housing, and the power supply device is provided with an AC power supply device, a socket, and a power supply module; The power supply module is provided with a lithium battery, the AC power supply unit and the power supply module are connected to the processor; the wireless network module is connected to the processor.

4) The wireless network module used in the present invention is connected to the processor. The wireless network module has a built-in wireless network receiver and a wireless network transmitter, which are used to connect to the wireless device terminal, and transmit the calculated mathematical operation results through the wireless device On the wireless intelligent terminal, it is convenient for users to check the calculation results anytime and anywhere. The wireless device terminal includes a smart phone and an IPAD with a wireless receiving function to complete mathematical calculation and wireless transmission.

5), the keyboard used in the present invention is installed on the outer end of the shell; the keyboard is connected to the processor; the keyboard includes number keys, up keys, down keys, and function keys; the number keys include 1, 2, 3...9; the number keys also include 0 key, 0.0 key, 0.00 key; the function keys include F1 key, F2 key, F3 key; the F1 key includes sine function processing system, cosine Function processing system, tangent function processing system, cotangent function processing system, arcsine function processing system, arccosine function processing system, arctangent function processing system, inverse cotangent function processing system; the F1 key also includes commonly used differential functions Operation processing system, special differential function operation processing system; described F1 key also commonly used integral function operation processing system, special integral function operation processing system; described F2 includes key return key, page turning key; described F3 key includes Custom function keys.

6) The USB interface device used in the present invention is provided with a USB interface and a data line; the USB interface device is connected to the processor, and the USB interface device is connected to the computer through the USB interface and the data line.

7) The RS232 communication device used in the present invention is connected to the processor; the RS232 communication device is connected to the network communication equipment to transmit the operation symbols of mathematical formulas.

8) The present invention adopts a solar power supply module. When there is sunlight, the solar power supply module can be used for power supply, which solves the problem of insufficient electricity for the calculator due to field power supply. Using the solar power supply module for power supply ensures a simple electronic The calculator runs normally; the present invention uses the wireless network module to transmit the calculation results of mathematical formulas, which solves the problem that general calculators cannot transmit mathematical formulas to smart phones and IPADs without network devices, and has the ability to receive mathematical formulas; the present invention also uses USB The interface device is connected with a computer through a USB interface and a data line, which improves the calculation ability of mathematical formulas, has the characteristics of convenient interface, simple operation, and convenient use, and can generate good economic and social benefits.

In addition to the above-mentioned embodiments, the present invention can also have other implementations. All equivalent replacements or equivalent transformation and deformation technical solutions are within the protection scope of the present invention. The many features and advantages of the embodiments of the present invention are apparent from this detailed description, and thus it is intended by the appended claims to cover all such features and advantages of the embodiments which fall within their true spirit and scope. Moreover, since many modifications and changes will readily occur to those skilled in the art, it is not intended that the embodiments of the present invention be limited to the precise construction and operation illustrated and described, but to encompass all suitable modifications and changes falling within the scope thereof. equivalent.

Parts not described in detail in the present invention are technologies well known to those skilled in the art.

Claims (4)

1. a kind of electronic calculator of simple type, it is characterised in that：Including memory（3）, shell（4）, solar powered module （5）, wireless network module（6）, electric supply installation（10）, LCD display（11）, USB interface device（12）, keyboard（13）、RS232 Communication device（14）；Described shell（4）It is provided with memory（3）, described memory（3）Including SDRAM memory, CF cards Memory, described SDRAM memory, CF card memorys are connected with processor respectively, described SDRAM memory storage number Learn formula, arithmetic operator table, computational mathematics formula, symbol the need for described CF card memorys storage；Described LCD display （11）Installed in shell（4）Center position, symbol and result for showing mathematical operation, described LCD display（11）With Controller is connected；Described solar powered module（5）It is connected with processor, for solar powered；Described power supply Device（10）Installed in shell（4）Upper end, described electric supply installation（10）Provided with ac power supply apparatus（7）, socket（8）, electricity Source module（9）；Described power module（9）Provided with lithium battery, described ac power supply apparatus（7）, power module（9）With processing Device is connected；Described wireless network module（6）It is connected with processor, described wireless network module（6）Built-in wireless network Network receiver, wireless network transmitter, for connecting wireless device terminal, wireless device is passed through by the mathematical operation result of calculating It is transmitted into intelligent wireless terminal, facilitates user to check operation result whenever and wherever possible, described wireless device terminal includes having Smart mobile phone, the IPAD of radio function are received, the calculating of mathematics is completed and is wirelessly transferred.

2. a kind of electronic calculator of simple type as claimed in claim 1, it is characterised in that：

Described keyboard（13）Installed in shell（4）Outer end；

Described keyboard（13）It is connected with processor；

Described keyboard（13）Including numerical key, upper key, lower key, function key；

Described numerical key includes 1,2,3 ... 9；

Described numerical key also includes 0 key, 0.0 key, 0.00 key；

Described function key includes F1 keys, F2 keys, F3 keys；

Described F1 keys include SIN function processing system, cosine function processing system, tan processing system, cotangent Processing system, arcsin function processing system, inverse cosine function processing system, arctan function processing system, arc cotangent function Processing system；

Described F1 keys also include conventional differentiation function arithmetic processing system, special differentiation function arithmetic processing system；

Described F1 keys also common integral functional operation processing system, special integral functional operation processing system；

Described F2 includes key return key, page turning key；

Described F3 keys include soft key.

3. a kind of electronic calculator of simple type as claimed in claim 1, it is characterised in that：

Described USB interface device（12）Provided with USB interface, data wire；

Described USB interface device（12）It is connected with processor, described USB interface device passes through USB interface, data wire and meter Calculation machine is connected.

4. a kind of electronic calculator of simple type as claimed in claim 1, it is characterised in that：

Described RS232 communication devices（14）It is connected with processor；

Described RS232 communication devices（14）It is connected with network communication apparatus, transmits the oeprator of mathematical formulae.