--giant clock--
local sSide = {
"left",
"right",
"top",
"bottom",
"back",
"front"
}
--peripheral check
for i=1,#sSide do
if peripheral.isPresent(sSide[i]) then
    if peripheral.getType(sSide[i]) == "monitor" then mon = peripheral.wrap(sSide[i])
    elseif peripheral.getType(sSide[i])==nil then
        error("No peripheral attached")
    end
end
end
--variables
local digits = {}
digits[0]={"   ___  ",
 "  / _ \\ ",
 " | | | |",
 " | | | |",
 " | |_| |",
 "  \\___/ "}
digits[1]={"   __   ",
 "  /_ |  ",
 "   | |  ",
 "   | |  ",
 "   | |  ",
 "   |_|  "}
digits[2]={"  ___   ",
 " |__ \\  ",
 "    ) | ",
 "   / /  ",
 "  / /_  ",
 " |____| "}
digits[3]={"  ____  ",
 " |___ \\ ",
 "   __) |",
 "  |__ < ",
 "  ___) |",
 " |____/ "}
digits[4]={" _  _   ",
 "| || |  ",
 "| || |_ ",
 "|__   _|",
 "   | |  ",
 "   |_|  "}
digits[5]={"  _____ ",
 " | ____|",
 " | |__  ",
 " |___ \\ ",
 "  ___) |",
 " |____/ "}
digits[6]={"    __  ",
 "   / /  ",
 "  / /_  ",
 " | '_ \\ ",
 " | (_) |",
 "  \\___/ "}
digits[7]={" ______ ",
 "|____  |",
 "    / / ",
 "   / /  ",
 "  / /   ",
 " /_/    "}
digits[8]={"   ___  ",
 "  / _ \\ ",
 " | (_) |",
 "  > _ < ",
 " | (_) |",
 "  \\___/ "}
digits[9]={"   ___  ",
 "  / _ \\ ",
 " | (_) |",
 "  \\__, |",
 "    / / ",
 "   /_/  "}
digits[10]={"   ___  ",
 "  / _ \\ ",
 " | | | |",
 " | | | |",
 " | |_| |",
 "  \\___/ "}
digits[11]={"   __   ",
 "  /_ |  ",
 "   | |  ",
 "   | |  ",
 "   | |  ",
 "   |_|  "}
digits[12]={"  ___   ",
 " |__ \\  ",
 "    ) | ",
 "   / /  ",
 "  / /_  ",
 " |____| "}
local colon = {
 "   ",
 " _ ",
 "(_)",
 "   ",
 " _ ",
 "(_)"
}
local am = {
"     ___       ___  ___  ",
"    /   \\     |   \\/   | ",
"   /  ^  \\    |  \\  /  | ",
"  /  /_\\  \\   |  |\\/|  | ",
" /  _____  \\  |  |  |  | ",
"/__/     \\__\\ |__|  |__| "
}
local pm = {
" ______    ___  ___  ",
"|   _  \\  |   \\/   | ",
"|  |_)  | |  \\  /  | ",
"|   ___/  |  |\\/|  | ",
"|  |      |  |  |  | ",
"|__|      |__|  |__| "
}
--functions
function digits12(h,m)
mon.clear()
--hours
if h == 0 then
    for i = 1,6 do
        mon.setCursorPos(1,i+2)
        mon.write(digits[1][i])
        mon.setCursorPos(11,i+2)
        mon.write(digits[2][i])
    end
elseif h < 12 then
    if h < 10 and h >= 1 then
        for i = 1,6 do
            mon.setCursorPos(1,i+2)
            mon.write(digits[0][i])
            mon.setCursorPos(11,i+2)
            mon.write(digits[h][i])
        end
    elseif h >= 10 and h < 20 then
        for i = 1,6 do
            mon.setCursorPos(1,i+2)
            mon.write(digits[1][i])
            mon.setCursorPos(11,i+2)
            mon.write(digits[h][i])
        end
    end
elseif h == 12 then
    for i = 1,6 do
        mon.setCursorPos(1,i+2)
        mon.write(digits[1][i])
        mon.setCursorPos(11,i+2)
        mon.write(digits[2][i])
    end
elseif h > 12 and h < 24 then
    local h = h - 12
    if h < 10 then
        mon.setCursorPos(1,3)
        for i = 1,6 do
            mon.setCursorPos(1,i+2)
            mon.write(digits[0][i])
            mon.setCursorPos(11,i+2)
            mon.write(digits[h][i])
        end
    elseif h >= 10 and h < 20 then
        for i = 1,6 do
            mon.setCursorPos(1,i+2)
            mon.write(digits[1][i])
            mon.setCursorPos(11,i+2)
            mon.write(digits[h][i])
        end
    end
end
--colon
for i = 1,6 do
    mon.setCursorPos(20,i+2)
    mon.write(colon[i])
end
--minutes
if m < 10 then
    for i = 1,6 do
        mon.setCursorPos(24,i+2)
        mon.write(digits[0][i])
        mon.setCursorPos(34,i+2)
        mon.write(digits[m][i])
    end
elseif m >=10 and m < 20 then
    local m = m-10
    for i = 1,6 do
        mon.setCursorPos(24,i+2)
        mon.write(digits[1][i])
        mon.setCursorPos(34,i+2)
        mon.write(digits[m][i])
    end
elseif m >=20 and m < 30 then
    local m = m-20
    for i = 1,6 do
        mon.setCursorPos(24,i+2)
        mon.write(digits[2][i])
        mon.setCursorPos(34,i+2)
        mon.write(digits[m][i])
    end
elseif m >=30 and m < 40 then
    local m = m-30
    for i = 1,6 do
        mon.setCursorPos(24,i+2)
        mon.write(digits[3][i])
        mon.setCursorPos(34,i+2)
        mon.write(digits[m][i])
    end
elseif m >=40 and m < 50 then
    local m = m-40
    for i = 1,6 do
        mon.setCursorPos(24,i+2)
        mon.write(digits[4][i])
        mon.setCursorPos(34,i+2)
        mon.write(digits[m][i])
    end
elseif m >=50 then
    local m = m-50
    for i = 1,6 do
        mon.setCursorPos(24,i+2)
        mon.write(digits[5][i])
        mon.setCursorPos(34,i+2)
        mon.write(digits[m][i])
    end
end
if h < 12 then
    for i = 1,6 do
    mon.setCursorPos(44,i+2)
    mon.write(am[i])
    end
elseif h >= 12 then
    for i = 1,6 do
    mon.setCursorPos(44,i+2)
    mon.write(pm[i])
    end
end
end


while true do
local MChours = math.floor(os.time())
local MCminutes = math.floor((os.time()-math.floor(os.time()))*60)
digits12(MChours,MCminutes)
sleep(0)
end