JPH05165423A - Counter display device - Google Patents

Abstract

PURPOSE:To provide a counter display device capable of displaying a numeric value larger than decimal number display with the same number of digits, and immediately judging the numeric value being displayed. CONSTITUTION:This device is equipped with a timer 1 which generates a signal (a) at every time interval that becomes reference, a counter 2 which counts a signal (b) generated by the timer 1, a display controller 3 which controls a 7-segment display 4 with plural digits corresponding to a DATA signal (a) representing the numeric value of the counter 2 and the 7-segment display 4 controlled by a display control signal (c) from the display controller 3 and which displays the numeric value of the counter 2. The display controller 3 performs such control that it displays the 7-segment display 4a at the highest digit in the 7-segment display 4 with the plural digits in a hexadecimal number and displays the 7-segment display 4b at the digit other than the most significant digit in the 7-segment display 4 in a decimal number.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a counter display device for counting signals generated by a timer and displaying the counted numerical value on a multi-digit 7-segment display.

[0002]

2. Description of the Related Art A conventional counter display device will be described with reference to the drawings. FIG. 2 is a block diagram of a conventional counter display device. In FIG. 2, 1 is a timer that generates a signal at each reference time interval, 2 is a counter that counts the signal generated by the timer 1, and 3 '
Is a display control device for controlling the numerical value of the counter 2 and the multi-digit 7-segment display 4, and 4 is a multi-digit 7-segment display for displaying the numerical value of the counter 2 in decimal. a is a signal generated at each reference time interval,
b is a DATA signal indicating the numerical value of the counter 2, and c'is a display control signal for controlling the 7-segment display 4 having a plurality of digits.

The operation of the conventional counter display device constructed as above will be described below. The signal a is generated at each time interval based on the timer 1. The generated signal a is counted by the counter 2, and the counted value is output to the display control device 3'as a DATA signal b. The display control device 3'takes in the DATA signal b and outputs the display control signal c'to the multi-digit 7-segment display 4. In the multi-digit 7-segment display 4, all the digits of the value counted by the counter 2 are displayed as a decimal number by the display control signal c '.

[0004]

However, the conventional counter display device configured as described above has a drawback in that the displayed numerical value exceeds the number of digits that can be displayed, and the meaning of the counter is lost. .. The present invention solves the above-mentioned drawbacks, and an object of the present invention is to provide a counter display device capable of displaying a numerical value larger than a decimal number display with the same number of digits and capable of immediately judging the displayed numerical value. It is what

[0005]

In order to achieve the above object, the counter display device of the present invention is a multi-digit 7-segment display device having a 16-segment display of the most significant digit.
Display in decimal, and set the 7-segment display other than the highest digit to 1
It is characterized in that it is displayed in a decimal number.

[0006]

According to the structure of the present invention, by displaying the most significant digit in hexadecimal and the remaining digits in decimal,
It is possible to express a numerical value up to about 1.6 times the decimal number display with the same number of digits, and it is possible to make an immediate judgment as in the case where the displayed numerical value is displayed in decimal only.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a counter display device according to an embodiment of the present invention. In FIG. 1, 1 is a timer that generates a signal a at each reference time interval, 2 is a counter that counts the signal a generated by the timer 1, and 3 is a plurality of digits according to a DATA signal b indicating the numerical value of the counter 2. The display controller 4 for controlling the 7-segment display 4 of 4 is a multi-digit 7-segment display 4 for displaying the numerical value of the counter 2 controlled by the display control signal c from the display controller 3.
Is.

In this counter display device, the display control device 3 displays the most significant 7-segment display 4a of the multiple-digit 7-segment display 4 in hexadecimal notation, and the digit other than the most significant digit is displayed. 7 segment display 4b 1
It is controlled so that it is displayed in a decimal number. The operation of the counter display device of this embodiment constructed as above will be described below.

A signal a is generated at each time interval based on the timer 1.
To occur. The generated signal a is counted by the counter 2, and the counted value is output to the display control device 3 as the DATA signal b. In the display control device 3, the DATA signal b
To output the display control signal c to the 7-segment display 4 having a plurality of digits. In the multi-digit 7-segment display 4, the value counted by the counter 2 is displayed by the display control signal c, and only the most significant digit is displayed by the 7-segment display 4a.
The 7-segment display 4b displays the other digits in decimal notation. In addition, the decimal number 10-15
Is displayed on the most significant 7-segment display 4a,
Display 10 as "A" or "a", 11 as "b", 12 as "C" or "c", 13 as "d", 14 as "E" or "e", and 15 as "F". ..

As described above, according to this embodiment, only the most significant digit of the multi-digit 7-segment display 4 is displayed in hexadecimal, and the other digits are displayed in decimal so that all the digits are displayed. It is possible to display a numerical value up to about 1.6 times that when displayed in decimal, and it is possible to make an immediate judgment as in the case where the displayed numerical value is displayed only in decimal.

[0011]

As described above, according to the present invention, the most significant digit is displayed in hexadecimal, and the remaining digits are displayed in decimal as in the conventional case.
It is possible to display numerical values up to 6 times, and it is possible to make an immediate judgment in the same manner as when the displayed numerical value is displayed in decimal only.

[Brief description of drawings]

FIG. 1 is a block diagram of a counter display device according to an embodiment of the present invention.

FIG. 2 is a block diagram of a conventional counter display device.

[Explanation of symbols]

 1 timer 2 counter 3 display controller 4 multi-digit 7-segment display 4a highest 7-segment display 4b 7-segment display other than highest digit a signal generated by timer

Claims (1)

[Claims] 1. A counter display device that counts a signal generated by a timer for each time interval serving as a reference and displays the counted value on a multi-digit 7-segment display. 7 of the most significant digit in the segment display
A counter display device characterized in that a segment display is displayed in hexadecimal and a 7-segment display other than the most significant digit is displayed in decimal.