Write a note on Sign extension of a number. Consider a computer that has a byte-addressable memory organization in 32-bit words according to Big-endian scheme and another computer that adopts little endian scheme. A program stores the equivalent ASCII character entered at the keyboard and stores them in successive byte location starting at location 1000. Show the content of two memory words at location 1000 and 1004 after ABCDEFG has been entered in both the computers.