File list (Check if you may need any files):
4x4matrixkeypad project
.......................\4x4matrixkeypad
.......................\4x4matrixkeypad.hex
.......................\4x4matrixkeypad.lnp
.......................\4x4matrixkeypad.M51
.......................\4x4matrixkeypad.Opt
.......................\4x4matrixkeypad.plg
.......................\4x4matrixkeypad.Uv2
.......................\4x4matrixkeypad_Opt.Bak
.......................\4x4matrixkeypad_Uv2.Bak
.......................\main.c
.......................\main.LST
.......................\main.OBJ
.......................\STARTUP.A51
.......................\STARTUP.LST
.......................\STARTUP.OBJ
schematic diagram.pdf
keypad connected to port 2.txt