computercraft clock
--Works best with 5x5 or 4x4 monitors--

print("12-Hour-System? (Y/N)")
hour = read()
print("")
print("Monitorheight: ")
height = tonumber(read())
print("")
print("Monitorlength: ")
length = tonumber(read())
print("")
computercraft clock How to use it? computercraft clock
print("Clock is running")



local monitor = peripheral.wrap("back")
 
monitor.setTextScale(5)
 
while true do
    local decimalTime = os.time()
computercraft clock How to use it? computercraft clock
    local hours = math.floor(decimalTime)
    local minutes = math.floor((decimalTime - hours) * 100 * 0.6)
    local ampm = "PM"

    if hour == "Y" then
		if hours > 12 then
    	    hours = hours - 12
    	    ampm = "PM"
   		else
        	ampm = "AM"
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    	end
	else
		ampm = ""
	end

    monitor.clear()
    monitor.setCursorPos(length - 1.5,height - 1)
    if minutes < 10 then
        monitor.write(hours..":0"..minutes.." "..ampm)
    else
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        monitor.write(hours..":"..minutes.." "..ampm)
    end
    sleep(2)
end
computercraft clock