Clock

[spywhere]

Bitmap

00000     1 22222 33333 4   4 55555 66666 77777 88888 99999
0   0     1     2     3 4   4 5     6         7 8   8 9   9   :
0   0     1 22222 33333 44444 55555 66666     7 88888 99999
0   0     1 2         3     4     5 6   6     7 8   8     9   :
00000     1 22222 33333     4 55555 66666     7 88888 99999

Bitmap encoded into numbers

[x, y]=0123456789:

[0, 0]=10111111110 1534
[1, 0]=10110111110 1470
[2, 0]=10110111110 1470
[3, 0]=10110111110 1470
[4, 0]=11111111110 2046

[0, 1]=10001110110 1142
[1, 1]=00000000000 0   
[2, 1]=00000000001 1   
[3, 1]=00000000000 0   
[4, 1]=11111001110 1998

[0, 2]=10111110110 1526
[1, 2]=00111110110 502 
[2, 2]=00111110110 502 
[3, 2]=00111110110 502 
[4, 2]=11111111110 2046

[0, 3]=10100010100 1300
[1, 3]=00000000000 0   
[2, 3]=00000000001 1   
[3, 3]=00000000000 0   
[4, 3]=11011111110 1790

[0, 4]=10110110110 1462
[1, 4]=10110110110 1462
[2, 4]=10110110110 1462
[3, 4]=10110110110 1462
[4, 4]=11111111110 2046

Code to generate encoded bitmap

function digit(x, y)
  local y_2 = y % 2
  local ey = y // 2
  local oy = (y - 1) // 2

  if x == 4 then
    if y_2 == 0 then
      return 2046
    else
      return 1998 - 208 * oy
    end
  elseif y == 4 then
    return 1462
  elseif x == 0 then
    if y_2 == 0 then
      return 1534 - 8 * ey
    else
      return 1142 + 158 * oy
    end
  elseif y_2 == 0 then
    return 1470 - 968 * ey
  elseif y_2 == 1 then
    return 1 - (x % 2)
  end
  return 0
end

local time = os.date('*t')
local hour = time.hour
local minute = time.min
-- local hour = time.min
-- local minute = time.sec

for y=0, 4 do
  local str = ''

  for c=0, 4 do
    local ch = '#'
    local n = 0
    if c == 0 then
      n = hour // 10
      -- ch = tostring(n)
    elseif c == 1 then
      n = hour % 10
      -- ch = tostring(n)
    elseif c == 2 then
      n = 10 + (time.sec % 2)
      -- ch = ':'
    elseif c == 3 then
      n = minute // 10
      -- ch = tostring(n)
    elseif c == 4 then
      n = minute % 10
      -- ch = tostring(n)
    end

    for x=0, 4 do
      local d = digit(x, y)
      if (d >> (10 - n)) & 1 == 1 then
        str = str .. ch
      else
        str = str .. ' '
      end
    end

    str = str .. ' | '
  end

  print(str)
end