= “PH¹M VI BIÓU DIÔN CÑA SÈ NGUYªN KIÓU BYTE

21) = “Ph¹m vi biÓu diÔn cña sè nguyªn kiÓu Byte: “ (21, 1) =”-127->128 “ (21, 2) = “0->255 “ (21, 3) = “0->256 “ (21, 4) =”-32768->32767 “*