Assignment

• Create a Program, Download, Breadboard, Test and Troubleshoot a program which will count in binary the number of times a single switch is pushed.
• You must debounce the switch.
• You should add a reset switch
• Your count should be from 0 to 255, then repeat
• The count should be displayed in binary using 8 leds on port B. You must calculate the resistor size such that the total current does not exceed the maximum current for the port indicated on the spec sheet.
• Your input switches should be connected to port A

What to Hand in

• A demonstration of system working
• A flow chart of your program and the source code in basic
• A print out of the applicable page of the spec sheet indicating the maximum current of Port B
• A calculation of the resistor values in order not to exceed the total allowable current
• Answer the foloowing Question
  1. Why is pin RA4 perhaps not suitable for use as a source output to drive a LED ?
  2. What special function can pin RA4 have if used as an input ?