Grade $/$ Points

$135$

$135$

Questions

If there is a four bit full adder integrated circuit. Add necessary logic ci gates and connections to convert it to an only subtraction unit with conside $2\text{'}$s complement of the data. Explain its work with an example. $($You describe the full adder as a rectangle.$)$

Both AR $($address register$)$ and PC $($program counter$)$ contain address. W addresses are held in these registers? How and why their values can be chan What is the difference between a direct and an indirect address instruction? many references to memory are needed for such type of instruction to brir operand into a processor register?

Answers