USE PROTEUS FOR DESIGPROTEUS

USE MPLAB FOR CODE

USE THESE LIBRARIES

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Use the following components from the Proteus library: PIC16F877 7SEG-MPX2-CC LED-BLUE (3 items) LED-GREEN LED-YELLOW KEYPAD-SMALLCALC Connect items to the microcontroller: (1) Connect the keypad to the PORTC; (2) Connect the 7-segment display unit to PORTC (data) and the lowest to pins of PORTD (selection); (3) Connect three blue LEDs to the highest four pins of PORTE, and (4) Connect other LEDs as you wish. This configuration should function as a simple calculator: It accepts one or two-digit numbers and three operators (+,-./) (divide operator results, integer division). A green LED should be ON while the user is expected to enter numbers. If the user enters a third digit while entering any number, a yellow LED should warn the user by blinking. After entering the first number, the user should select the operation and enter the second number. The user should press the equality (=) key to display the result on display. One of the blue LEDs should indicate the selected operation (+,-/). The 7-segment display shows the first pressed number on the right digit. If the user presses the second number, the first number should shift to the left, and the second number should be on the right. Please consider that the user may enter one or two-digit numbers. The yellow LED becomes ON to indicate the number on display is the result. If the result is negative or greater than 99, the green LED should blink