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Interface HEX keypad and seven segment display to 8051 and write assembly language program to display the key pressed on the display.
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written 8.9 years ago by
teamques10
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HEX keypad is essentially a collection of 16 keys arranged in the form of a 4 x 4 matrix. HEX keypad usually have key representing numeric 0 to 9 and character A to F. The hex keypad has 8 communication lines namely R1, R2, R3, R4, C1, C2, C3, and …
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