Veronica Ulrich

I need an example. 01101011. Knowing our mantissa we know where our decimal goes: .1011 By our exponent we turn it into 010 from our original number (110). By this number we have that we move the decimal positive 2 to the right. My question is why is it "positive"? Thus our answer would be 10.11 which represents 2 and 3/4ths. 10111100 Knowing our mantissa we know where our decimal goes: .1100 By our exponent we turn it into 101 from our original number (011). By this number we have that we move the decimal negative 1 to the left. My question is how does 101 represent the value (-1) I can understand the first exponent representing 2 because 010 is 2. But I can't understand the second exponent where 101 becomes negative one when to me it looks like a positive 5. Can someone help me here?

Can someone please tell me how to decode a byte in Floating-Point Notation? -Veronica Ulrich