15 sprites test no alpha channel

local col = {
    ["0"] = 1,
    ["1"] = 2,
    ["2"] = 4,
    ["3"] = 8,
    ["4"] = 16,
    ["5"] = 32,
    ["6"] = 64,
    ["7"] = 125,
    ["8"] = 256,
    ["9"] = 512,
    ["A"] = 1024,
    ["B"] = 2048,
    ["C"] = 4096,
    ["D"] = 8192,
    ["E"] = 16384,
    ["F"] = 32768
}

local function drawChar(image,posX,posY)
    for y = 1,#image do
        term.setCursorPos(posX,posY+y-1)
        local st = ""
        local lastF = col[image[y][1].f]
        local lastB = col[image[y][1].b]
        for x = 1,#image[y] do
            if lastF == image[y][x].f and lastB == image[y][x].b then
                st = st..image[y][x].c
            else
                term.setTextColor(lastF)
                term.setBackgroundColor(lastB)
                term.write(st)
                st = image[y][x].c
                lastF = col[image[y][x].f]
                lastB = col[image[y][x].b]
            end
        end
        term.setTextColor(lastF)
        term.setBackgroundColor(lastB)
        term.write(st)
    end
end

local img = {
    {
        {f = "E",b = "A",c = "T"},
        {f = "E",b = "C",c = "E"},
        {f = "E",b = "D",c = "S"},
        {f = "E",b = "0",c = "T"},
        {f = "A",b = "A",c = " "},
    },
    {
        {f = "A",b = "B",c = "F"},
        {f = "A",b = "B",c = "I"},
        {f = "A",b = "B",c = "L"},
        {f = "A",b = "B",c = "E"},
        {f = "A",b = "A",c = " "},
    },
    {
        {f = "A",b = "A",c = " "},
        {f = "A",b = "A",c = " "},
        {f = "A",b = "A",c = " "},
        {f = "A",b = "A",c = " "},
        {f = "A",b = "A",c = " "},
    },
    {
        {f = "A",b = "A",c = " "},
        {f = "A",b = "A",c = " "},
        {f = "A",b = "A",c = " "},
        {f = "A",b = "A",c = " "},
        {f = "A",b = "A",c = " "},
    },
    {
        {f = "A",b = "A",c = " "},
        {f = "A",b = "A",c = " "},
        {f = "A",b = "A",c = " "},
        {f = "A",b = "A",c = " "},
        {f = "A",b = "A",c = " "},
    },
}

local offX,offY = 1,1

while true do
    term.setBackgroundColor(32768)
    term.clear()
    drawChar(img,offX,offY)
    drawChar(img,offX,offY+6)
    drawChar(img,offX,offY+12)
    drawChar(img,offX+6,offY)
    drawChar(img,offX+6,offY+6)
    drawChar(img,offX+6,offY+12)
    drawChar(img,offX+12,offY)
    drawChar(img,offX+12,offY+6)
    drawChar(img,offX+12,offY+12)
    drawChar(img,offX+18,offY)
    drawChar(img,offX+18,offY+6)
    drawChar(img,offX+18,offY+12)
    drawChar(img,offX+24,offY)
    drawChar(img,offX+24,offY+6)
    drawChar(img,offX+24,offY+12)
    local event = {os.pullEvent("key")}
    if event[2] == 200 then
        offY = offY - 1
    elseif event[2] == 208 then
        offY = offY + 1
    elseif event[2] == 203 then
        offX = offX - 1
    elseif event[2] == 205 then
        offX = offX + 1
    elseif event[2] == 28 then
        return
    end
end