LIQUID CRYSTAL MODULE DRIVE CIRCUIT OF CHARACTER DISPLAY EQUIPMENT

摘要

The liquid crystal module driving circuit for checking the liquid crystal module of a large scale comprises an oscillator (10) for generating fundamental pulses to drive the LC module and a divider (20) for freq.- dividing the fundamental pulse into a number of predetermined signals. A display data memory (50) stores the data to be displayed on the LC screen. An address generator (30) receives the output signals from the divider (20) to designate an address of the display data memory (50). A controller (40) comprises the logic gates (47,48,49) having enable inputs connected to the outputs of the counter (46), and the divider (20). A reset unit (60) comprises and AND gate having three inputs to clear the counters of the generator (30).