#self doubt

Question

https://gateoverflow.in/203832/gate1990-1-iv-b

explain it briefly. what 's the change are needed using base 16 and excess 64 format.

Comments

Actually, 7-bit Signed exponent ( By default signed numbers represented in 2's complement ) and Excess-64 are equivalent.

How?

excess-64 ( should be represented by 7 bits ) ===> Minimum =0 and Maximum = 127

===> true exponent are Min = 0-64 = -64 and Max = 127-64 = 63

 

2's complement,signed 7-bit representation, min=-64 and max=+63