1. CHAPTER 6 - FUNCTIONS OF COMBINATIONAL LOGIC The logic symbol below is a Sum Input bits Outputs Sum Input bits Outputs Sum Input bits Outputs

4. The logic symbol below is a S Input A 2 Sum bits Cou Output carry Input carry An input of 1 on Input A, an input of 1 on Input B and an input of 0 on C-IN produces an output on Sum of 2 Input A E Sum bits Cout Output carry Input carry Cin 6. An input of 1 on Input A, an input of 1 on Input B and an input of 1 on C-IN produces an output on Sum of Input A Sum bits out Output carry Input carry Lin

7. An input of 1 on Input A, an input of 1 on Input B and an input of 1 on C-IN produces an output on C-OUT of E Input A E Sum bits B Cout Output carry Input carry Cin 8. Below is the logic diagram for a E =AOB = AB + AB D Cout = AB B

9. This 2-bit parallel adder can be used to add two 3-bit numbers. A B General format, addition of two 2-bit numbers: AA 0 + B2 BI A B Cin A FA2 FAI COUL (MSB) Z3 E (LSB) 10. This 4-bit parallel adder can be used to add two 4-bit numbers. 4-bil number Sum - Co A BC. A B Cit A BG, Binary (MSB) FA4 FA3 FAZ FAI (LSB) number I CA Output curry caTy (a) Block diagram bj Logic symbol