JPH0133794B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a calendar display device in which a period consisting of a plurality of specific days can be easily set in a small electronic calculator or the like having a calendar function.

2. Description of the Related Art Conventionally, some small electronic calculators are equipped with a calendar function, that is, they are capable of displaying a calendar by specifying an arbitrary year and month. Furthermore, this small electronic calculator with a calendar function allows you to specify and memorize specific dates such as birthdays, anniversaries, company holidays, etc. in advance, and when the calendar is displayed, a A system is being considered in which a separate display is lit to clearly indicate a specific date. However, in the conventional method of setting specific days mentioned above, the date must be entered for each specific day, so when specifying a long period of time, such as summer vacation, even if the specific days are consecutive, it is necessary to enter the date for each specific day. Specifying operations had to be performed for all dates, which was extremely troublesome.

This invention was made in view of the above points,
By entering the specified starting date and number of days,
It is an object of the present invention to provide a calendar display device in which a period from the starting date to the elapse of the number of days can be set as a specific day.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing the system configuration of a small electronic calculator. In the figure, 11 is a key input section, including a "DATE" key 11a for inputting the year, month, and day, a "CALE" key 11b for displaying a calendar, a "SET" key 11c for setting a period,
It includes a numeric keypad section 11e and a function key section 11f. Further, 12 is a ROM (read-on memory) in which various microinstructions are stored, and from this ROM 12, address control signals are sent to the address control section 13, and control signals are sent to the control section 14.

The address control section 13 sends addressing signals to the first RAM 15 and the second RAM 16. In addition, the first RAM 15 and the second RAM 1
6 sends an output signal to the latch circuit 17 and the address control section 13. Further, the data held in the latch circuit 17 is sent to the arithmetic circuit 18, and arithmetic is performed based on the arithmetic designation signal output from the control section 14.
And the calculation result is sent to the second RAM 16.
Note that the ROM 12 is connected to one of the input terminals of the arithmetic circuit 18.
A code signal (not shown) is input from. Further, a carry signal and a data signal are sent from the arithmetic circuit 18 to the control section 14. Then, the control unit 14 controls the ROM 12 based on these signals.
Outputs the next address designation signal. Furthermore,
The address control section 13 is supplied with a control signal for the address register AD from the control section 14 . Furthermore, the control unit 14 controls the first RAM 15 and the second RAM 15 .
Chip enable signal CE ₁ to RAM16,
CE ₂ and read/write signals R/W are provided, respectively. Further, data supplied from the key input section 11 is inputted to a T register of a first RAM 15, which will be described later, via an arithmetic circuit 18. One output of the latch circuit 17 is supplied to a display section 19 including a display buffer HB and the key input section 11 via a data bus.

Next, Figure 2A shows the first RAM in Figure 1.
15 is a diagram showing the configuration of No. 15. As shown in the figure, the first RAM 15 includes A to F registers, S, T
Equipped with a register and a calculation register (not shown),
A, E, and F registers are for temporary storage, B to D registers are for date information storage, and S
The register is for year information storage or temporary storage, T
The register is used for storing numeric information.

Also, Figure 2B shows the second RAM in Figure 1.
16 is a diagram showing the configuration of No. 16. As shown in Figure B, the second RAM 16 can store one year's worth of set dates. The second RAM 16 is composed of, for example, eight digits corresponding to each month, and can store four bits of information for each digit. Then, the storage area for each month (M ₁
~ _M12 ), "1st", "2nd" in order from the rightmost bit.
Setting information for "3rd day", "3rd day", etc. is stored, and when "1" is written in a certain bit, it indicates that the date corresponding to that bit is the set date.

The operation of the present invention configured as above will be explained. For example, the operation when setting 14 days from March 16, 1980 as a specific date will be described. First, use the key input section 11 to select □1□9□8□0.
DATE□3DATE□1□6DATE□＋□1□4
When SET is operated in sequence, the operation of the flowchart shown in FIG. 3 is started. And the steps
At _S11 , the numeric data stored in the T register is transferred to the B register (see FIG. 4A).
The states of the registers are shown in FIG. 4 below. ). Next, in step _S12 , the content "16" of _B2,3 (representing the 2nd and 3rd digits of the B register; the same applies hereinafter) is transferred to the _F3,4 digit. Then, in step _S13 , a digit designation subroutine I, the details of which will be described later with reference to FIG. 5, is executed.

This digit specification subroutine I is executed in the second RAM1.
This is to set the set date to 6, and the digit designation of the second RAM 16 and the numerical value to be set are calculated using the 3rd _and 4th digit date. Then, the digit designation data is stored in _F0 , and the numerical value is stored in _F2 .

Next, in step _S14 , the content of _F0 output as a result of the above digit specification subroutine I is "3".
is stored in A ₀ . Then, in step _S15 , the content "8" of _F2 output as a result of the digit designation subroutine I is stored in _A2 . (FIG. 4B) Next, in step _S16 , the reference number of days is calculated from the contents of _B2 to _B9 , ``19800316''.

This standard number of days refers to a certain standard date (for example,
means the number of days from March 1, 1900 to the current date. This standard number of days is calculated using a known calculation formula. Next, in step _S17 , the content "14" of the reference number of days _B0,1 obtained in step _S16 is added to obtain a date corresponding to this reference number of days, and this date is stored in _D2 to _D9 digits. (Figure 4C) Next,
In step _S18 , the content "29" of _D2,3 is transferred to _F3,4 . Then, in step _S19 , digit designation subroutine I is called and executed. Next, in step _S20 , the content "7" of _F0 , where the result of the digit designation subroutine I is stored, is stored in _C0 . Next, in step _S12 , the content " ₁ " of F2, where the result of the digit designation subroutine I is stored, is stored in _C2 . (Fig. 4E) Next, in step _S22 , the month information "3" to which the starting date belongs, stored in _B4 , ₅ , and the month information "3" after the elapsed period, stored in _D4,5 , are combined. be compared. In step _S22 , it is determined whether the month changes by inputting a predetermined period from the start date. In step _S22 , if the comparison results are equal, step _S23 is executed; if not, step _S24 is executed. Next, in step _S23 , the calculation "C ₀ -A ₀ " is executed.

If the result of this calculation is "0", step _S38 ;
If it is "1", the process branches to step _S33 , and if it is greater than "1", the process branches to step _S24 . In step _S23 , the digit where the flag is raised on the starting day in the set date memory for March is compared with the digit where the flag is raised on the day after the predetermined period of "14 days" has elapsed. In this case, “C ₀ −A ₀ ”
Since the content of is 4, proceed to step _S24 . In this step _S24 , the contents of _A0 specifying the digit of the second RAM 16 are incremented by "+1" and stored in _E0 . Next, in step _S25 , the content "4" of _E0 is set to _AD0 , ₁ digit of the address register AD of the address control section.
Transfer the content "3" of BB _4,5 to AD _2,3 .

Row designation is performed based on the contents of address registers _AD0,1 . Then, in step _S26 , "1111" (decimal number "15") is changed to the AD content "0304".
The setting date for March is stored in the fourth digit of the memory area _M3 of the second RAM 16 whose address is modified by . next,
In step _S27 , the contents of _E0 are incremented by "+1".
Next, in step _S28 , the contents of _E0 and "8" are compared. Here, this "8" is the second RAM
It shows the maximum number of digits within 16. In other words, one digit is 4
Since it is a bit structure, if there are 8 digits, it is "1 day".
~Can store information for the date "31st". If it is determined that "E ₀ = 8" in step _S23 , the contents of _B4,5 are added to + in step _S29 .
1 and transfer to E _1,2 and advance the month by "+1 month". Further, in step _S30 , " ₀ " is stored in E0. On the other hand, if it is determined in step _S28 that "E ₀ ≠8", the process advances to step _S31 . Then, in step _S31 , the month information stored in _E1,2 is compared with the month information stored in _D4,5 , which belongs to the last day of the period setting. In this case, the period set is March 16
Since it is March 29th, proceed to step _S32 .
Then, in step _S32 , the number of digits in the set date storage areas for each month stored in _E0 and _C0 are compared. In this case, it is determined that the contents of E ₀ and C ₀ are not equal. Then step S ₂₅ →S ₂₆ →S ₂₇
→S ₂₈ →S ₃₁ →S ₃₂ →S ₂₅ →S ₂₆ →S ₂₇ →S ₂₈ →SS ₃₁ →
The process of S ₃₂ → is repeated until E ₀ =C ₀ , and “1111” is stored in the 4th to 6th digits in the set date storage area M ₃ for March (FIG. 4F). Next, if it is determined in step _S23 that C ₀ -A ₀ =1, or if it is determined that E ₀ =C ₀ in step _S32 , the process advances to step _S33 . Then, in step _S33 , a digit designation subroutine whose details will be described later in FIG. 6 is executed.

In this digit specification subroutine, the A register
Add a predetermined number to the contents of the A ₂ digits and the C ₂ digits of the C register. Next, in step _S34 , the digit to which the end of the period belongs is specified. The content of C ₀ is “7”
In AD _0,1 , the content "3" of D _4,5 , which specifies the month to which the period belongs, is stored in AD _2,3 . Next, step S ₃₅
In this step, an OR operation is performed between "1" stored in _C2 and a predetermined area (7th digit of _M3 ) of the second RAM 16 specified by the address register AD.
Next, in step _S36 , the content "3" of A ₀ , which specifies the digit to which the first day of the period belongs, is set to AD _0,1 , and the content "3" of B _4,5 , which specifies the month to which the period belongs, is set to AD 0,1.
Stored in AD _2,3 . Next, in step _S37
"8" stored in A ₂ and address register
A predetermined area of the second RAM 16 (third digit of _M3 ) specified by AD is OR-added. (Fig. 4) On the other hand, in step _S23 , C ₀ −A ₀ =0
If it is determined that the first day and the last day of the setting period are located in the same digit in the setting date storage area (M ₁ to _{M 12} of the second RAM 16), the process advances to step _S38 . In step _S38 , a digit designation subroutine, which will be described later in FIG. 6, is executed. Then, in step _S39 , _A2 and _C2 output from the digit designation subroutine are OR-added, and the result is stored in _A2 . Thereafter, steps _S36 and _S37 are executed, and the process ends.

Next, the operation of the digit designation subroutine will be explained using the flowchart shown in FIG. When the digit designation subroutine is called, the date stored in F3 _{and F4} is divided by "4" in step _S41 , the quotient is stored in _F0 , and the remainder is stored in _F1 . next,
In step _S42 , it is determined whether _F1 is "0".
Then, when F ₁ = 0 _, "F ₀
-1” is stored in F ₀ . That is, if there is no "remainder" in the calculation in _S41 , the date is a multiple of 4, so the digit address to be specified is shifted by one digit. In order to correct this, F ₀ is set by "-1".
For example, if the date is "8th", F ₀ = 2, F ₁ =
It is 0 and the digit address is the second digit. As it is, the 9th to 12th bits of M ₁ to _{M 12} of the second RAM 16 are designated, but the 8th bit corresponds to "8th day". Therefore, the first digit must be specified. Next, in step _S44 , "8" is stored in _F2 .

If F ₁ ≠ 0 in step S ₄₂ above, step S ₄₅
is executed. In step _S45 , F ₁ is "1",
It is determined whether it is "2" or "3". Step S ₄₅ above
If it is determined that F ₁ = 1 in
In _S46 , 1 is stored in _F2 . Above steps
If it is determined in _S45 that F ₁ =2, 2 is stored in F ₂ in step _S47 . Furthermore, if it is determined in step _S45 that F ₁ =3, 4 is stored in F ₂ in step _S48 .
The digit address in the set date storage area ( _M1 to _M12 ) of the second RAM 16 for the date input in the digit specification subroutine as described above is set to _F0 ,
The numerical value within that digit is stored in _F2 .

Next, the processing of the digit designation subroutine will be explained using the flowchart shown in FIG. This subroutine takes as input A2, which stores the numerical value to be written in the digit that belongs to the start date of the setting period, and _{C2 ,} which stores the numerical value to write in the digit that belongs to the final day of the setting period,
Perform processing to set a flag between the start date and the last day of the set period. First, in step _S51 , it is determined whether _A2 or "8". Above steps
If A ₂ is ``8'' in S <sub>51</sub> , the process branches to step S <sub>56</sub> , and if it is determined that A <sub>21</sub> is not ``8'', the process proceeds to step S ₅₂ . In step _S52 above, A ₂ =
If it is determined to be 1, "15"("1111") is stored in _A2 in step _S53 . On the other hand, step
If it is determined in _S52 that A ₂ =2, the process proceeds to step _S54.
"14"("1110") is stored in _A2 . Furthermore, if it is determined in step _S52 that A ₂ =4, "12"("1100") is stored in A ₂ in step _S55 . and steps S ₅₁ , S ₅₃ to S ₅₅
After processing, the process advances to step _S56 . Above steps
In _S56 , it is determined whether _C2 is "1". Then, in step _S56 , if _C2 is "1", the process ends, and if it is determined that _C2 is not "1", the process proceeds to step _S57 . If it is determined in step _S57 that _C2 =2, "3"("0011") is stored in _C2 in step ^S58 . Also,
In step ^S57 , if it is determined that C ₂ =4,
In step _S59 , "7"("0111") is stored in _C2 . Furthermore, in step S ₆₀ , C ₂
If it is determined that =8, "15"("1111") is stored in _C2 in step _S60 . Then, after the steps _S56 , _S58 to _S60 are processed, the process of the flowchart ends.

Next, the operation for displaying the calendar stored in the second RAM 16 will be explained using the flowchart shown in FIG. To display the calendar for March 1980, □1□9□8□0DATE□3
If you enter DATE CALE in sequence,
The processing in the flowchart of FIG. 7 is executed. First, in step _S61 , the numeric data "198003" stored in _T0-7 is transferred to _B0-5 . next,
In step _S62 , the date of the first Sunday is calculated from the year and month information stored in _{B0 to B5} , and the date is stored in _B8 . Then, in step S ₆₃ , B ₈
The date of the first Sunday stored in is stored in the display buffer HB ₈ . Then, in step _S64 , unnecessary days when the calendar is displayed on the display section are deleted. put it here,
If the current month is a smaller month than the year and month information stored in B 0 to _{B 5} , "1" is stored in B ₉ , and if the current month is February, "7" is stored in B ₉ . If the current month is February of a leap year, "3" is stored in _B9 . Next, in step _S65 , _B9 is stored in the display buffer _HB9 . Next, in step _S66 , the year of the calendar stored in the second RAM stored in _S6-9 is compared with the year displayed on the display section stored in _B2-5 . If it is determined in step _S66 that the two are equal,
At step _S69 , the month "3" stored in B _0,1 is stored in AD _2,3 . Next, step S ₆₈
The second address qualified with AD _2,3 in
The contents of the March setting date storage area _M3 on the RAM 16 are transferred to display buffers HB0 to _HB7 . On the other hand, if it is determined in step _S66 that the two are not equal, no display is performed. On the other hand, the step
If it is determined in _S66 that the two are equal, the display buffer HB 0 to HB _{0 to 7} will be displayed as shown in Figure 8.
The calendar for March 1980 will be displayed. In FIG. 8, the dates are arranged in a matrix, and a Sunday indicator 21 is set for each column. A specific day display segment 22 is arranged below each date. Additionally, the 29th, 30th, and 31st are masked by a mask body 23 so that they are not displayed in unnecessary months. Then, the display buffer
A Sunday display 21 is displayed according to the contents of HB ₈ , and specific day display segments 22 for dates from March 16th to March 29th, which are preset in the second RAM 16, are displayed.

Note that when inputting a period, it is of course possible to input a period earlier than the starting date.

Further, in the embodiment, the date data is calculated sequentially using the starting date and number of days data, but the present invention is not limited to this, and date data and number of days data of the starting date may be stored.

As described in detail above, according to the present invention, by simply inputting the date data and the number of days data of the starting date, the dates within this period can be calculated and stored in sequence, making it easy to set the period. It is possible to provide a calendar display device that can perform

[Brief explanation of drawings]

The drawings show one embodiment of the invention.
The figure shows the overall system configuration of an electronic desk calculator.
2A is a diagram showing the internal configuration of the first RAM 15 in FIG. 1, and FIG. 2B is a diagram showing the internal configuration of the first RAM 15 in FIG.
A diagram showing the configuration of the RAM 16, FIG. 3 is a flowchart for explaining the operation, and FIG. 4 is a diagram showing the states of A or each register and setting date storage area.
FIG. 5 is a flowchart showing a digit designation subroutine, FIG. 6 is a flowchart showing a digit designation subroutine, FIG. 7 is a flowchart for display processing, and FIG. 8 is a diagram showing a calendar display. 11...Key input section, 11a...DATE key,
11b...CALE key, 12...ROM, 13...
...Address control unit, 15...First RAM, 16
...Second RAM.

Claims (1)

[Claims] 1. A display means capable of displaying 1 to 31 dates for displaying at least one month's calendar;
An input means for inputting desired month and day data as the starting date and number of days data representing a predetermined period from the above starting date, and based on the starting date and number of days data input from this input means, the above number of days from the above starting date. A calculation means for calculating the dates of the period up to the elapse of the data, a storage means for storing each date calculated by the calculation means as a specific date, and the above display based on the specific date information stored in the storage means. 1. A calendar display device comprising display control means for displaying that the date displayed on the means is a specific day.