EXPERIMENT NO: 2
Name – Surname: ...................................................................................................................... ID : ...............................................................
ZIRVE UNIVERSITY
ELECTRICAL-ELECTRONICS DEPARTMENT
EEE342 – MICROPROCESSORS
LABORATORY
OBJECTIVES
 To learn basic properties of EX8B2 microcontroller development board.
 To write a basic assembly program with using PIC16F84A.
 To learn using PIC16F84A ports as input and output.
EXPERIMENTAL WORK
Development Board : EX8B2
Microcontroller : PIC16F84A
Ports to be used : PORTA(RA0-RA4) & PORTB(RB0-RB7)
Experiment:



Write an assembly program with using ports RA0 to RA4 as input and RB0 to RB7 as output.
If you press the RA0 button, RB0 and RB1 LEDs must be ON , if you press the RA1 button, RB1
and RB2 LEDs must be ON and the sequence must continue like this till you press the RA4
button.
All LEDs must be OFF when you release your finger from buttons or when you don’t press any
of the buttons.
Example:
RB0
RA0
RA1
RA2
RA3
RA4
RA5
RE0
RE1
Press RA3
RB1
RB2
BUTTONS
 RB3 and RB4 LEDs must be ON when
RA3 button is pressed.
RB3
RB4
RB5
RB6
RB7
LEDS
1