Huge 74181 Is A Classic ALU You Can Actually Understand | Hackaday
2 x 74LS181 4 bit ALU's cascaded to form 8 bit ALU, Cin problem? - Electrical Engineering Stack Exchange,Explaining The Operation Of The 74181 ALU | Hackaday,Huge 74181 Is A Classic ALU You Can Actually Understand | Hackaday,Inside the vintage 74181 ALU chip: how it works and why it's so strange