def loop
myLCD.clearscr "Alphabet Chars?n"
0x41.upto(0x5a) do |i|
@a = i
myLCD.print @a
delay 50
end
0x61.upto(0x7a) do |i|
@a = i
myLCD.print @a
delay 50
end
delay 3000
myLCD.clearscr "Numeric Chars?n"
0x30.upto(0x39) do |i|
@a = i
myLCD.print @a
delay 50
end
delay 3000
myLCD.clearscr "Other Chars?n"
0x21.upto(0x2f) do |i|
@a = i
myLCD.print @a
delay 50
end
0x3a.upto(0x40) do |i|
@a = i
myLCD.print @a
delay 50
end
0x5b.upto(0x60) do |i|
@a = i
myLCD.print @a
delay 50
end
0x7b.upto(0x7f) do |i|
@a = i
myLCD.print @a
delay 50
end
delay 3000
end