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    • 5. 发明专利
    • LIQUID CRYSTAL DISPLAY TYPE PROTRACTOR
    • JPS60202304A
    • 1985-10-12
    • JP5905784
    • 1984-03-27
    • SAITO NAOKIHORIKOSHI SHINICHI
    • SAITOU NAOKI
    • G01B3/56G01B21/22
    • PURPOSE:To display the numerical value of an angle between arbitrary angle scales, which are detected by sensors, by forming the angle scales, which are displayed on a liquid crystal display, at the liquid crystal display part in a flat shape at an equal angle interval, and providing sensors in correspondence with the scale angles. CONSTITUTION:A CPU21 always monitors the flag bits of a keyboard I/F20 and sensor I/F22. When the ten keys of operating keys 6 are depressed, the flag bits of the keyboard I/F20 rise, and the angle data, which is inputted from the operating keys 6, is sent to the CPU21. The CPU21 sends the angle data to a liquid crystal driving I/F23 and an angle display I/F24. The liquid crystal driving I/F23 selects a transparent display electrode 14 corresponding to the angle data, and the angle scales, which are inputted from the operating keys 6 are displayed by the liquid crystals. The angle display I/F24 drives an angle display part 9, and the numerical value of the angle is displayed in synchronization with the input from the operating keys 6. Thus the arbitrarily specified angle scales can be displayed by the liquid crystals. The angle, which is formed by two sensors, can be detected and displayed by the numerical value.