This Course is computer architecture course :

A CPU executes the following sequence of instructions, starting with the Program Counter $($PC$)$ set to $1000.$ Each instruction is $4$ bytes long. Answer the questions below.

Instruction Sequence:$$

$-$ Fetch an instruction at address $1000.$

$-$ Fetch an instruction at address $1004.$

$-$A jump instruction causes the PC to update to $1040.$

$-$ Fetch an instruction at address $1040.$

$-$ Fetch an instruction at address $1044.$

Questions:$$

$1.$What is the value of the PC after each step in the instruction sequence?

$2.$ If a branch instruction at address $1044$ modifies the PC to $1012,$ what happens next?