Abstract: An analog voltage representing the weight of an article being weighed is provided by a strain-gage type load cell. The analog voltage is converted into digital weight value data by means of an analog/digital converter. If the weight value data which are provided after the lapse of a predetermined time period following the turning on of a power supply, are within a predetermined range, the weight value data are stored in a memory as an offset value. The data stored in the memory are used for subtraction from further weight value data are displayed in digital manner by a display. If the weight value data provided after the lapse of a predetermined time period is off the predetermined range, a renewal setting of the offset value in the memory is prevented.

Abstract: An electronic weighing apparatus comprises a load cell which provides an analog voltage associated with the weight of an article being placed on the apparatus. The analog voltage is converted into digital data responsive to each timing pulse by means of an analog/digital converter. The digital data is loaded in a digital display buffer responsive to each timing pulse and is then displayed in a digital manner by a display. On the other hand, a stable state detecting circuit compares the current digital data obtained from the analog/digital converter with the preceding digital data and determines the weighed value having reached a stable state upon coincidence of both the current and preceding pieces of the data. The timing pulse and thus the digital data is prevented from being loaded in the display buffer responsive to the output from the stable state detecting circuit, whereby the display buffer continues to maintain the digital data at the time point when the stable state is reached.

Abstract: An electronic weighing apparatus, is provided with a load cell which is responsive to the weight of an article being weighed. A preamplifier amplifies the analog output signal from the load cell which is representative of the weight of the article, by a predetermined amplification factor. An analog-to-digital converter converts the amplified weight representing analog output signal into a digital signal representative of the weight. The analog-to-digital converter has an enhanced resolution which may be as high as five times the resolution of a conventional A/D converter. An adder adds a first predetermined digital signal representative of the decimal value "2" to the weight representing digital signal. A divider divides the sum output from the adder by a second predetermined digital signal representative of the decimal value "5".

Abstract: The present electronic weighing apparatus comprises a load convertor, a direct current amplifier for amplifying the converted output, an analog-digital converter controlled by an enable signal for the analog-digital converting of the output from the dc amplifier, an enable signal generator for providing a periodical conversion enable signal to the analog-digital converter, and a digital display for displaying the output from the analog-digital converter. A zero tracking circuit is connected between the A/D converter and the display and comprises a storing circuit responsive to a store enable signal for storing the output from the analog-digital converter, a digital subtracter for evaluating the difference between the output from the analog-digital converter and the output from the storing circuit. The output from the digital subtracter is applied to the digital display as the weighed output. A zero judging or sensing circuit determines whether the output from the digital subtracter is zero.