I have some misunderstandings with Q format. Please help me in understanding this.
If I say Q8 [unsigned] then there will be $8$ fractional bits. Is it ? How can I represent a $1$ and $1.5$ in this case?
If I say Q8 [ signed ] then there will be $1$ sign bit and $7$ fractional bits. Here how can I represent a $1$ and $1.5$?
When I say Q1.7 means I have $1$ integer bit and $7$ fractional bits. And the minimum number I can store in Q1.7 is $-1$ and maximum number is $1-1/2^7$. Is this understanding is correct ?