| 摘要 |
The aging voltage generating circuit of a fluorescent display comprises a data input unit; a computer for supplying various data input to the data input unit via an interface; a display unit for displaying the input data to the external; a system controller for controlling peripheral circuits to generate an aging voltage; a data storing unit for storing the input data and a system control program; a voltage control signal generating unit for generating a voltage control signal; a voltage generating unit for supplying a voltage to a fluorescent display; a frequency control signal generating unit for outputting a frequency control signal; a frequency generating unit for outputting a frequency with a predetermined cycle; first to third pulse width determining signal generating units for outputting a pulse signal to determine the pulse width; first to third frequency modulating units; first to third aging voltage selecting units; and first to third aging voltage generating units.
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