• Table 1: Truth table of Half Adder(HA)
  

• Table 2: Truth table of Full Adder(FA)
  

• Fig. 1: Circuit diagram of Full Adder
  

• Fig. 2: Block diagram of Ripple Carry Adder(RCA)
  

• Fig. 3: Schematic diagram of Subtractor using Adder
  

• Fig. 4: Carry Lookahead Generation
  

• Fig. 5: 2-bit Carry Lookahead Adder(CLA)
  

• Fig. 6: 4-bit CLA using cascaded 2-bit CLA
  

• Fig. 7: Block diagram of 4-bit CLA
  

• Fig. 8: Block diagram of 4-bit Barrel Shifter
  

• Fig. 9: 1-bit Arithmetic-Logic Unit(ALU)