PDA for w starts and ends with the same symbol$1.$ What is the process and result of adding the two $8-$ bit two's complement numbers $01101010$and $10010101?$Explain how you determine if overflow occurs. $2.$ Explain the trade $-$ off between precision and range in floating $-$ point representations. Why might a designer choose to use double precision instead of single precision? $3.$ Describe IEEE $745$single and double precision representation, including the rationale for design choices made. $4.$ Describe how scientific and multimedia computation performance could be improved by subword parallelism. $5.$ Convert the decimal number $-25.75$to IEEE $754$single $-$ precision floating $-$ point format. Show all steps. $6.$ Perform the following floating $-$ point addition in IEEE $754$single precision: $1.25+0.75.$Show all steps.