Value computing scale

Details Value computing scale Value computing scale

G - Physics

01

G

265/5

G01G 19/413 (2006.01) G01G 23/36 (2006.01)

Patent

CA 1062291

ABSTRACT OF THE DISCLOSURE Improved electronic apparatus for weighing, computing a value and printing a label showing the weight, the price per unit weight and the computed value of each of a plurality of successive commodities. An integrated circuit microcomputer is supplied with the article weight from a load cell scale and with the price per unit weight either from a manual keyboard or automatically from a commodity plate in a label printer. The microcomputer includes an arithmetic logic unit, data registers and a sequence controller which is programmed to cause the microcomputer to correct for scale errors, to check for no motion of the scale, to compensate the measured gross weight for any tare weight, to check various interlocks, to compute an article value and to cause a label to be printed for the article. Input data to the microcomputer and output data from the microcomputer is multiplexed through interface circuitry. Weight data from the microcomputer is supplied to a display and weight, price per unit weight and value data from the microcomputer is supplied to the printer. The display including four indicators for displaying four decades of weight data, one of the indicators including a decimal point display means for sequentially supplying weight data from the computer to the indicators. The indicators are energized one at a time but sufficiently fast as to appear to be continuously energized, the energizing circuit including energizing the units digit and the decimal point substan- tially simultaneously. The keyboard includes a lock switch which must be manually actuated after new price data is supplied to the microcomputer to enable the microcomputer to supply the calculated value data for the weighed commodities to the printer.

312636

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