Microprocessor and Embedded system In PIC 16F84A, Four switches are connected to PORTA] (RA0-RA3) and four LEDs are connected to PORTB (RB0-RB3). Write a program that does the following: a) Moves push button switch values from PORTA to W register. b) Subtract 30h to the W register. c) Displays the W register to the four LEDs in PORTB