JPH01265352A - Compact electronic computer - Google Patents

Abstract

PURPOSE:To quickly and clearly know the meaning of the memory contents and to easily call out the memory contents by displaying at one time the numerical value and the header showing the meaning of the numerical value in a pair and at the same time searching and reading out a memory from the first character of the head or the head itself. CONSTITUTION:The character data on the first character 'KI' of a header 'KINGAKU', for example, showing the meaning is inputted to the storage data of a RAM 15 via a KANA (Japanese syllabary) key. The character data on 'KI' is stored in an upper-stage display buffer 18a and then displayed at an upper-stage display part 19a. When a search key 115 is operated, a CPU 12 searches the inside of the RAM 15 and checks successively whether the first character of each data is coincident or not with the character data held by the buffer 18a. If the coincident character data is confirmed, the upper-/lower- stage storage data are read out of the RAM 15 and sent to the CPU 12. Then these storage data are written into the buffer 18a and a lower-stage display buffer 18b. In such a way, the meaning of the memory contents is displayed together with the numerical value and the memory contents can be easily called out.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an electronic calculator that displays headings along with numerical data.

[Prior art and its problems] Conventionally, small electronic calculators such as electronic desktop calculators are equipped with independent memory, and the rM+J (rM-J) key is used to add (X) (subtract) to the memory register.
The memory contents can be read out again on the display section by pressing the key, or the memory can be designated by multiple memory stores, such as rMinJ, "M+", "M-", rMR.
There are devices that allow multiple numerical values to be memorized by a combination of a memory key such as J and a numeric keypad.

However, in this type of conventional small electronic calculator, the user must remember the meaning of the numerical values input into the memory, which is extremely troublesome. Also, it is not possible to search or display the meaning of the memory contents.

[Object of the Invention] The present invention has been made in view of the above points, and it is possible to display the meaning of memory contents together with numerical values, and to easily recall the memory contents by simply remembering a part of the memory contents. The purpose is to provide an electronic calculator that can be used.

[Summary of the Invention] The present invention makes it possible to display a pair of numerical values and headings indicating their meanings at one time, and to search the memory using the initial letter of the heading or the heading itself and use it for calculations. It's something.

[Embodiment of the Invention] An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, 11 is a key input section, where numbers, characters, keys 11
1, a function key 112, a memo key 113, a display selection Φ-114, a search key 115, and the like. Then, the key manual data from the key input section 11 is as follows:
It is input to the key determination unit 121 of the CPU J2. The CPU 12 is provided with various control functions as well as a flag register F for storing function data. and.

The CPU J 2 includes a ROM 13% calculation register group 14 that stores various control instructions, and a RAM 15 that stores specified data. ')'-) Circuit 16, gate control, circuit 17, etc. are connected. Register details for the above calculation 1
4 is provided with registers for calculations such as x, y, z, etc. Thus, the CPU J 2 sends key manual data, calculation data, etc. to the upper display buffer 18a1 and the lower display buffer 18b via the dart circuit 16. Then, the data held in the upper display buffer 18a and the lower display buffer 18b are sent to the display section 19. This display section 19 includes an upper display section 19h.
and a lower display section 91519b, and an upper display section 19g.
The data held in the upper display buffer 18a is displayed, and the data held in the lower display buffer 111b is displayed in the lower display section 19b.

In this case, the upper display section 19ts is dedicated to displaying only character data, and the lower display section 19b is dedicated to displaying numerical data only. Further, the data held in the upper stage optical display buffer 18h is sent to the RAM 15. This R
In the AM J 5, as shown in FIG. 2, each data area is provided with an upper data storage area 15a and a lower data storage area 15b. Above upper data storage area 15a
and the lower data storage area 15b are separated by the upper and lower delimiter code CJK. Furthermore, a data delimiter code C2 is written between each data area.

Thus, the data read from the RAM J 5 is input to the CPU J 2 as well as to the upper and lower delimiter code identifying section 20. The upper/lower delimiter code identification unit 20 identifies the upper/lower delimiter code C from among the data read from the RAM 15, and upon identification, sends an rlJ signal to the dart control circuit 77. This f-) control circuit 17 memorizes the signal from the CPU J 2 To or the upper and lower delimiter code identification unit 20.
The data is stored and the switching control of the dart circuit 16 is performed. That is, the dart control circuit 17 writes the memory lJMKrlJ when character display data is output from the CPU J 2, so in that case, the dart control circuit 16 is switched to the upper display buffer 181 side, and the CPU When numerical display data is output from J2, the memory MKrOJ is written, so in that case, the dirt circuit 16 is switched to the lower display buffer 1Bb side.

Next, the operation of the above embodiment will be explained with reference to FIG. In Figure 3, for example, an item with a unit price of r26,000J yen is labeled "5".
The figure shows the key operations, changes in the display state in response to the key operations, and changes in the contents stored in the flag register F of the memory M1 when calculating the total amount when purchasing an item and storing the unit price and the total amount in the RAM 15. It is something. When starting an arithmetic operation, first, as shown in (1) in FIG. 3, the all clear key rAcJ in the middle input section 11 is operated. By operating this all clear key rAcJ,
The contents of the calculation register group 14, the upper display buffer 18a, and the lower display buffer 18b are cleared and the %
Flag register F of CPU J 2 and memory M of dart control circuit 12 are cleared.

As a result, under the control of the dart control circuit 17, the dart rotation w
116 is switched to the lower optical display buffer 18b side, and the CP
"O6" is written from U 12 to the lower display buffer 18b, and "0." is displayed on the lower display section 19b.Then, as shown in FIG. 3 (2), the unit price "26000J" is written from the key input section 11. is input, and then the multiplication key rXJ is operated.The unit price r26 inputted from the key input section 11 is
oooJ is sent to the CPU 12, and the key content is determined by the key determination unit 121. When the CPU 12 receives numerical data, it outputs a "0" signal to the control circuit 17 and writes it into the memo IJM. If the content of the memory M is "0", the dart control circuit 17 switches the dart circuit 16 to the lower display buffer 18b side. Therefore, CPU 12
The numerical data output according to key operations is r-)
The data is written to the lower display buffer 18b via the circuit 16 and displayed on the lower display section 19bK. (9) The above numerical input data is sent from the CPU 12 to the calculation register group 14 and set in the X register. Then, as mentioned above, when the multiplication key rXJ is operated after the numeric key,
A multiplication flag is set in the flag register F of the CPU 12.

Next, the display selection key 114 is operated as shown in FIG. 3(3)K. When you operate this display selection --114, CP
A "1" signal is sent from UJ2 to the dart control circuit 17 and written to the memo IJH. ff-) control-w! r
17 switches the dart circuit 16 to the upper stage display buffer 18a@ when "1" is written in the memo M. At this time, the upper display section 19a displays a cursor at the most significant digit to indicate the next character input position, and the lower display section 19b displays the numerical data as is. In this state, the third
As shown in FIG. (4)K, for example, the heading character ``Tanriki'' indicating the meaning (unit price) of the above numerical data is inputted using the keypad. This kana character data is written to the upper display buffer 18mVC from the CPU 12 via the dart time %16, and is displayed on the upper display section 19a. In this case, each time you enter one character of data, the cursor will shift to the right,
Indicates the next character input position.

After inputting the character data, the memo key 113 is operated as shown in FIG. 3(5). CPtJ J 2 is.

When the operation of the memo key 113 is detected, first, it is checked whether or not there is data in the upper display buffer 18&, and if there is data, it is transferred to the RAM 15, and the upper and lower delimiter υ code C1 is written at the data end. Add. Subsequently, the CPU Ij checks the presence or absence of data in the lower display buffer l1lb, and if there is data, inputs the data into the RAM 15 following the upper and lower delimiter code CI.

At this time, the CPU 12 adds a data delimiter code C2 as an end mark to the end of the data.

Thereafter, as shown in FIG. 3(6), the numerical value "5" indicating the number of items is inputted from the key input section 11.

By inputting this numerical data K, the dart circuit 16 is switched to the lower display buffer 18b side as described above, and the contents of the upper light display buffer 18m and the lower display buffer 18b are cleared. Thereafter, the input numerical value "5" is written into the lower display buffer 111b and displayed on the lower display section 19b. Also, at this point, the multiplication flag is held in flag register F.

The input data "5" is sent as an operation/X number to the operation register #14 and written to the Y register.

In this state, as shown in Figure 3 (7) K, the equal key "="
” to operate. When the equal key "=" is operated, the CPU J Z multiplies the data r26000J held in the X register of the calculation register group 14 by the data "5" held in the Y register, and executes the multiplication. Result r 130000J'iX Write to register and lower display buffer 18b.

The multiplication result written in this lower display buffer JgbK is displayed on the lower display section 19b.

Next, the display selection key 114 is operated as shown in FIG. 3(8). By operating this light display selection key 114, the dirt circuit 16 is switched to the upper display buffer 111 as described above.
At the same time, a cursor is displayed on the most significant digit of the lower display section 19a.

In this state, as shown in FIG. 3(9)K, the heading character "Kingaku" indicating the meaning of the display data r 130000J (total gold II) at that time is input to the keypad.

Then, as shown in FIG. 3, the memo key 113 is operated. When the CPU 12 detects the operation of the memo key 113, it first checks whether there is data in the upper display buffer 18aK and stores the character data "Kingaku" in the RAM.
15, and the upper and lower delimiter sicode C is added to the data end.
Add 1. Next, the CPU 12 checks the presence or absence of data in the lower display buffer 18b, and stores the data r130.
000J followed by the above upper and lower separator code C, and then RAM
15 Input large IC. At this time, the CPU 12 adds a data delimiter code C2 as an end mark to the end of the data. As described above, the RAM 75K, unit price, and total amount are written together with character data indicating their meaning.

Next, the fourth section describes the operation when the data stored in the RAM J5 as described above is subsequently read out and used.
This will be explained with reference to the figures. For example, if you want to calculate the unit price from the total amount and number of items stored in the RAM 15, first operate the all clear key rAcJ as shown in Figure 4 (1), and The contents of the buffer 18a, the lower light display buffer 18b, the flag register F, and the memory M of the dart control circuit 17 are cleared.In this state, as shown in FIG.
For the stored data of s, if the initial letter of the index character indicating the meaning, for example, the character data is ``kingari'', the character data of shi ``ki'' is inputted to the kana key. This character data is input to the upper display buffer 18m, and the upper display section 19&
will be displayed. Next, the search key 115 is operated as shown in FIG. 4(3). When this search key 115 is operated, the CPU 12 searches the RAM 15,
It is sequentially checked whether the first character of each data matches the character data held in the upper display buffer 18m. If there is matching character data, the stored data in the upper and lower rows, that is, in this case, "Kingari" and r130000J are transferred from the RAM 15 to the CPU.
12 K read, upper display buffer J8m, lower display buffer 18bKl are loaded. The nine data read into the upper display buffer 181 and the lower display buffer 18b are stored in the upper display section 19a and the lower display section 7, respectively.
51b. Also, Konoto@RAM
15 to the CPU I2 and the nine amount data “13
0000J is sent to the calculation register group 14 and written to the X register.

Then, as shown in FIG. 4(4)k, the division key "+" is operated. By operating this division key, a division flag is set in the flag register F of CPU Jj.

Next, as shown in FIGS. 4(5) and 4(6), the first letter "Yu" of "Tanriki" is input from the key input section 11 and the search key 115 is operated. By inputting the above character data, the upper display buffer 181 and the lower display buffer l1
The contents of lb are cleared and the input character data "ri" is written to the upper display buffer 18&. Thereafter, the RAM 15 is searched by operating the search key 115,
Character data "Toniki" and numerical data r26000J are read from the RAM 15 to the upper light display buffer 18& and the lower display buffer 18b via the CPU J 2, and are then read out to the upper light display section 191. The display can be completed in the lower display section 19b.

Also, at this time, the unit price r26000J read out from the RAM J5 to the CPU 12 is stored in the calculation register group 1.
4 and written to the Y register.

In this state, as shown in Figure 4 (7), the equal key "
Operate =". For CPU J 2, press the equal key “=
” is detected, the contents of the upper display buffer 18m and the lower display buffer Job are cleared, and the set flag of the flag register F is set to the data r1 held in the X register of the calculation register group 14.
30000j is the data r2 held in the Y register
Divide by 6oooJ and write the result of the division, that is, the number of items "5" to the X register and the upper display buffer 18m. Therefore, the lower light display section 19b displays the above performance X4.
The number of items requested by C is displayed, ``5''.

In the above embodiment, the initial letter of the heading letter is p R
Although the AM J 5 t-search is performed, it is also possible to search the RAM J 5 using the index character itself. Furthermore, the heading characters are not limited to kana, but may also be alphabetic characters.

[Effects of the Invention] As detailed above, according to the present invention, a numerical value and a heading indicating its meaning can be displayed as a pair, and the memory can be searched by the initial letter of the heading or the heading itself. Since the meaning of the memory contents is clear at a glance, the contents of the memory can be easily recalled just by memorizing a portion of the contents.

Furthermore, it is possible to perform calculations by successively reading out the memory contents using pseudo characters, which can be extremely effective in practical terms.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a block diagram showing the circuit configuration, FIG. 2 is a diagram showing data acquisition of the RAM in FIG. 1, and FIG. 3 is a diagram showing input data processing and processing. FIG. 4 is a diagram for explaining the writing process to the memory, and FIG. 4 is a diagram for explaining the successive output of data stored in the memory and the arithmetic processing using the read data. 11...Key input section, 12...CPU, 74...
Arithmetic register group, 15...RAM, 16...
Gate circuit, 17...ff-) control circuit 74, 1llh
... Upper display buffer, 18b... Lower display buffer, 19... Display section, 19a... Upper display section,
19b...Lower display section, 20...Upper and lower delimiter code identification section. Applicant's agent Patent attorney Takehiko Suzue Figure 4

Claims (1)

[Claims] A key input section for inputting numerical data and character data, a numerical display section for displaying numerical values, a character display section for displaying headings for the numerical values, a group of calculation registers, a memory for storing designated data, and this memory. means for storing a designated numerical value and a heading for this numerical value as a pair; means for searching and reading out the stored contents of this memory using the heading or a part of the characters of the heading; and reading from the key input section or the memory. A small electronic calculator characterized by comprising a calculation means for performing calculations based on data.