Digital input and output

 

# Prototyping board (breadboard)
# Power supply connector
# 5-15VDC power supply
# Assorted wires
# 5V regulator
# PIC 18F452 or BX-24
# Serial cable
# DB9 female serial connector & headers
# 4MHZ crystal for PIC
# 22pF capacitors for crystal
# LED's
# Switches
# 10Kohm resistors
# 220 ohm resistors

Microcontrollers: what they are, different types, levels.
Intro to PIC and PIC Programming
Digital input and output
Serial Output

Output - LED

code: input portb.0 output portd.1 main: if portb.0 = 1 then ' if the switch is closed on pin RB0 high portd.1 ' set pin RD1 high else law portd.1 ' set RD1 law endif goto main

Input - Serial out

code: code: input portb.0 output portd.1 output portc.6 main: if portb.0 = 1 then ' if the switch is closed on pin RB0 High portd.1 ' set pin RD1 high SEROUT2 portc.6, 16468, ["You are pressing the botton!", 13,10] else low portd.1 ' set RD1 low endif goto main