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i m using micro-controller p89v51rd2 in that i m trying program of keypad which out put show on 7 segment but in that when i m hold the key than out put will be show but after relished the key out put dont show or say my out put was not hold. so any one tell me how to hold my out put.
sir i m using 7 segment not lcd so i want to hold data when another key was not press