4BIT binary ADDER

Each column is A1|B1, A2|B2, A3|B3, A4|B4 of numbers A1|A2|A3|A4 and B1|B2|B3|B4 Example: 14 + 10 = 24(5bit) 14 = 1110; 10 = 1010; 1110 + 1010 = 11000; 11000 = 24; Dispay shows value un HEXidecimal form. 18(hex)=1*16+8*1=24(dec)