Interface a 4x4 Matrix keyboard and single digit 7- segment display (SSD) with 8051 Microcontroller and...

 

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Interface a 4x4 Matrix keyboard and single digit 7- segment display (SSD) with 8051 Microcontroller and simulate it in proteus to read the key pressed and display corresponding digit (0 to F) on SSD. While doing so: - Row lines of (calculator) keyboard are connected to P1 and Column lines are connected to P2 while SSD is connected to P3 b. Use polling method to detect key press. c. Use 20msec delay to de-bounce the key. C. d. Generate Control words for displaying 0 F as per following keys: - ON 0123456789+-X÷= IC e. - € 12345678988CJEF 0 The last digit should keep on displaying until next key is pressed. f. // Use appropriate comments in code so that it is understood by the reader. 2. Suggest improvements) in the design (by replacing existing adding new components SO that computational burden on microcontroller can be reduced. Interface a 4x4 Matrix keyboard and single digit 7- segment display (SSD) with 8051 Microcontroller and simulate it in proteus to read the key pressed and display corresponding digit (0 to F) on SSD. While doing so: - Row lines of (calculator) keyboard are connected to P1 and Column lines are connected to P2 while SSD is connected to P3 b. Use polling method to detect key press. c. Use 20msec delay to de-bounce the key. C. d. Generate Control words for displaying 0 F as per following keys: - ON 0123456789+-X÷= IC e. - € 12345678988CJEF 0 The last digit should keep on displaying until next key is pressed. f. // Use appropriate comments in code so that it is understood by the reader. 2. Suggest improvements) in the design (by replacing existing adding new components SO that computational burden on microcontroller can be reduced.