JPS6025796B2 - Display method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display method achieved by a simple circuit configuration of electronic equipment.

In conventional display systems for electronic devices, when displaying code information such as numerical information and its code information, or information indicating that the electronic device is in memory, these display information are stored in one display register. It was held and displayed in the evening.

With this display method, each time the display contents are used for calculation, only the code information is deleted and the numerical information is retrieved, and each time the calculation result is displayed after the calculation is completed, the code information is created again. You have to go through some means. Furthermore, in electronic devices such as electronic desktop calculators and cash registers that use binary IQ Hayabusa numbers to drive them, the code information is expressed in IG Hayabusa numbers (binary numbers) as, for example, 10 (1010). 15 (1111) are used. In order to create such code information, a special circuit configuration is required, which, together with the above-mentioned reason, complicates the circuit configuration and increases the number of logical operation steps. SUMMARY OF THE INVENTION The present invention aims to solve the above-mentioned disadvantage of a complicated circuit configuration, and provides a display system that can be achieved with a simple circuit configuration.

The display method according to the present invention stores and holds numerical information in a display register, and conditionally stores code information such as code information of displayed numerical values and information indicating that an electronic device is in a memory state. It is stored and held in a flip-flop register for display. Examples will be described below with reference to the drawings.

FIG. 1 is a circuit diagram of a conventional display system. The display register 1 is divided into a code information section 2 and a numerical information section 3. The code information section 2 stores and holds code information such as code information of displayed numerical values and information indicating that the electronic device is in a memory state, and the numerical information section 3 stores and holds numerical information. It is configured. These are introduced into the display holding register 4 by a timing signal. Then, from the binary information a, , a2, a3, a4 held for one bit time by the clock pulse, the clock pulse map c
Binary information A, , which is held for one digit time by
, A3, and A4, and are configured to be introduced into the segment decoder 5 and displayed. As described above, this display method has the disadvantage of complicating the circuit configuration and increasing the number of logical operation steps in order to create code information.

FIG. 2 is a circuit configuration diagram of an embodiment according to the present invention.

A numerical information section 7 provided in the display register 6 stores and holds numerical information as display information. Further, a code information section 9 provided in the conditional flip-flop register 8 for storing logical operation formulas stores and holds code information. The code information refers to code information of displayed numerical values, information indicating that the electronic device is in a memory state, and the like. When displayed, the numerical information stored in the numerical information section 7 is introduced into the OR gate 11 through the AND gate 10 in response to the first timing signal. or,
The code information in the code information section 9 is also introduced into the OR gate 11 through the AND gate 12 in response to the second timing signal. The timings of the first timing signal and the second timing signal may or may not match. Then, the output of the OR gate 11 is introduced into the display holding register 13. In the register 3, binary information a. , a2, a3, a4, binary information A, , A2, n, which is held for one digit time by the clock pulse Jc, is created. The binary information A
,,A2,n,n are introduced into the segment decoder 14,
It is configured to be displayed. In the display system according to the present invention, numerical information and code information are stored and held in different registers.

When using the displayed numerical value for calculation, it is sufficient to derive only the numerical information stored in the numerical information section 7, and there is no need to delete the code information stored in the code information section 9 each time. In addition, since the conditional flip-flop register 8 has a function of driving every bit, it is possible to drive a signal used as code information, for example, 10 (1
It is also relatively easy to create 010) to 15 (1111). Furthermore, it is not necessary to always provide a fixed function for storing code information to the code information section 9 provided in the conditional flip-flop register 8; Normal conditional flip. It can be given the function as a top. Therefore, by adopting this display method,
The display function can be made to wait with a simple circuit configuration. Further, there is no need for a special circuit configuration for creating code information, which was conventionally necessary, and there is an effect that the number of logical operation steps is considerably reduced. As described above, in the present invention, the numerical information among the displayed information is stored and held in a register dedicated to numerical values, and the code information such as the code information of the displayed numerical value and the information indicating that the electronic device is in the memory state is It is stored and held in a register dedicated to codes and displayed.

This display method is achieved with a simple circuit configuration, and has the effect of simplifying the logical operation steps. This display method is effective for all electronic devices that display using a shift register method.

[Brief explanation of the drawing]

FIG. 1 is a circuit configuration diagram of a subordinate display method, and FIG. 2 is a circuit configuration diagram of an embodiment according to the present invention. 1, 6...Display register "2, 9...
... Code information section, 3, 7... Numerical information section, 4
, 13... Display holding register, 5, 14... Segment decoder, 8... Conditional flip-flop. Figure 1 Figure 2

Claims (1)

[Claims] 1 In the display method of electronic equipment, when displaying numerical information and its code information, or code information such as information indicating that the device is in memory state, the numerical information of the above display information is placed in a register dedicated to numerical values. At the same time, the code or code information is stored and held in a code-specific register that is separate from the numerical register, and when displaying, the information in the two registers is input to the display section as necessary for display. A display method characterized by: