4-Bit-Signed_Calculator

Hey Guys, this is 4 Bit Signed Calculator designed using Xilinx ISE 14.7 Features of Calculator:

1. It performs arithmetic operations like 𝙰𝚍𝚍𝚒𝚝𝚒𝚘𝚗, 𝚂𝚞𝚋𝚝𝚛𝚊𝚌𝚝𝚒𝚘𝚗, 𝙼𝚞𝚕𝚝𝚒𝚙𝚕𝚒𝚌𝚊𝚝𝚒𝚘𝚗, 𝙳𝚒𝚟𝚒𝚜𝚒𝚘𝚗

2. Two inputs will be given of size 4-Bit each

3. M0 and M1 pins are used to decide which one arithmetic operation out of four must be performed at a time, as, [M1, M0] = Operation

   • 00 = Addition
   • 01 = Subtraction
   • 10 = Multiplication
   • 11 = Division

The signs of the input values are decided by two allotted pins as Sign_A and Sign_B as, [Sign_A, Sign_B] = Sign (for value 2), Sign (for value 1)

1) 00 = Positive, Positive
2) 01 = Positive, Negative
3) 10 = Negative, Positive
4) 11 = Negative, Negative