To develop a program for the PIC 16F84Ausing the MPLAB v8.86 IDE simul ator software.

The program is to function as a 10 second countdown timer which, when started, will display

the number 9 on a seven segment display. The number will then be automatically

decremented, displayed, decremented etc. until zero is reached. Each number is displayed for

1 second. The countdown sequence will then repeat.

Objectives:

Describe your program using properly structured flowcharts

(main program and

subroutines)

.

Demonstrate the use of subroutines e.g To initialize the peripheral registers and to set the time delays, etc

.

Demonstrate the use of indexed addressing to retrieve data from a table in memory.

Describe the operation of the program in

writing

.

Provide a properly formatted program listing

.

Use the MPLAB IDE software to assemble, run and debug the program.