Implement the following code in LC3 architecture. PLEASE MAKE SURE IT WORKS BEFORE SENDING, it should run and be able to be tested. please provide and explanation at the end, thank you!

Exercises .1 Character twister - Program description - Read a character from the keyboard - Subtract x40, so that ' A ' is 1 , 'B' is 2 , etc. - Multiply by 2 - Subtract 1 - Add 40 back, so that 1 is ' A ', etc - Print the character to the screen - Subroutine breakdown - DoSubtraction: Receive Value01 in R0 and Value02 in R1, return (Value01 - Value02) in GP Register R0. - DoMultiplication: Receive Value 01 in R0 and Value 02 in R1, return (Value01 Value02) in GP Register R0. - DoTwister: Carry out steps in the Program Description, calling TRAP x23 to fetch a character, setting up and making subroutine calls to compute the value to print, calling TRAP 21 to print the character. - Main routine - Initialize Stack Pointer - Call DoTwister - HALT