Answer 19
It is invalid statement because CPL works with a register or individual bit.
CPL complements value present in register and stores the result in the same register or it complements a bit and stores result in same bit.
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19. Is the instruction "CPL Pi" a valid instruction? 20. Write a program to toggle P1.2...
Write a program to toggle P1.3, P1.7, and P2.5 continuously without disturbing the rest of the bits.
04. a) Write an 8051 C program to send values 00 through FFH to port Pl. b) Write an 8051 C program to send values -3 to +3 to port P1. c) Write an 8051 C program to toggle all bits of P1 (between 55H and AAH) with some delay d) A door sensor is connected to P1.1 and a buzzer to P1.7. Write an 8051 C program to monitor the sensor and when it opens (0') sound the buzzer...