JPS6020776B2 - Calculator with printing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a calculator with a printing device having trigonometric function functions such as sin, cos, and tan.

In calculating trigonometric functions, the unit of the numerical value is 1Q Hayabusa degree (DE
C), arc degree (RAD), or degree fraction (DMS), and if there is a setting error, the result will be of no value, and if you do not realize this and use the result as is, there will be a big problem. It became.

Also, if you print out the results of a previous calculation and save it, if you forget which mode you used to calculate it, it will become just a piece of paper with no value and no purpose in storing it. It will become.

The present invention has been made to solve these conventional drawbacks, and provides a calculator with a printing device that records in which mode the calculation was performed along with the calculation result.

FIG. 1 shows a main part of a circuit block assembled in a computer according to an embodiment of the present invention, and FIG. 2 shows an example of printing.

Printing example shown in Figure 2 Hazu 13 (No Negoshi Ryoha 2)
...This is a printout of the calculation example of ■. DEGMODE 0 is printed at the bottom of the answer, which is not printed in the past.

According to FIG. 1, first, the mode setting switch SW has contacts corresponding to each mode (indicated as DMS, RAD, and DEC in the figure), and each contact has a strobe signal of T, to T3. is applied and one of the signals is selectively output to the AND gate ○. Numerical keys (numeric keypad method)
, sin, cos, tan, etc., are encoded via the key coder EC as they are operated, and input into the buffer register BR. The shift controller CPC is controlled by the output of the key encoder EC, and sequentially stores information associated with the 0 operation of each key in the buffer register BR. For example, when the execution key EXE is operated after inputting the formula (■) through each predetermined key operation, a signal is applied to the shift controller CPC, and a signal is applied to the buffer register B.
The stored contents of R are sequentially shifted and sent to the decoder DC, and the output thereof is input to the arithmetic processing unit CPU. Since the equation (2) contains a sine function, the OR gate G2 detects this and outputs it to the Asor gate G. When the calculation is done, a print control signal PC is output and the printer
P starts printing. As shown in Figure 2, this printing first prints the calculation formula, then changes the column and answers, and then outputs an instruction from the AND gate G to the character generator CG to print "DEGMODE" on the next column. It has become. It should be noted that the configuration of each block such as the key encoder EC and the transmission and reception of signals between the blocks may be of the known type and will not be described here. If necessary, a program calculator sold by the applicant MODELPC-36
Please refer to 00. In the above example, the trigonometric function sin,
We have only mentioned cos and n, but the inverse trigonometric function sin
-1, cos-1, tan-1 → r, 8 → ×, y, etc., which are related to trigonometric functions, can similarly be printed with corresponding mode symbols in parallel with the answers.

In addition, in a calculator with a display device, if the mode display means such as a lamp is used for display,
It is obvious at a glance whether the displayed answer is the number of 1G ships, the solitary degree, or whether it was calculated in degrees, minutes, and seconds mode. As described above, according to the present invention, when a calculation involving a trigonometric function or a function related thereto is performed, the mode name related to the calculation can be printed together with the calculation result. You can also check it later.

Moreover, the printing of the mode name is based on the output of the switch means for mode setting and the arithmetic expression input by key.
The mode name printing operation becomes more reliable because it is performed based on the detection output when any one of the above is detected.

[Brief explanation of the drawing]

FIG. 1 shows a main part of a circuit block diagram of a computer which is an embodiment of the present invention, and FIG. 2 shows an example of printing thereof. Figure 2 Figure 2

Claims (1)

[Claims] 1. In a calculator that is equipped with switch means for setting each mode of decimal degrees (DEG), arc degrees (RAD), and degrees/minutes (DMS) and is capable of executing functional operations, sin, cos, means for detecting whether any of tan is included; a gate circuit for gate-controlling the mode setting output of the mode setting switch means according to the detection output; and a mode setting output corresponding to the mode setting output output from the gate circuit. 1. A calculator with a printing device, comprising means for printing mode names side by side with calculation results.