Pre lab Exercises

1.    Redraw the combinational logic schematic diagram of FIGURE 1 in your log book.

2.    Obtain the Boolean Equation for R3, R2, R1 and R0.

3.    Derive the Truth Table from the Boolean Equation that you have obtained. This is called the reverse engineering process.

4.   From the Truth Table, derive Boolean Equation again. Compare the Boolean Equation from Truth Table and the one you obtained directly from the circuit in (2). Are there any differences?

5.    Identify the equivalent TTL IC numbers that are needed to implement the circuit in the lab.

6.    Assign the pin numbers that you would use to make connections to the circuit in the lab.

7.    Give the "component requirement listing" of the hardware implementation of the circuit. Refer dix B in your laboratory manual. You need to follow the format as shown in Table 2 of Appendix B.

8.    What do you think is the function performed by thus combination logic circuit.

9.    Why is the output R3 not obtained from one 4 input AND gate? Instead two gates are used to realize R3.
 

OBJECTIVES | PRE LAB | PROCEDURE | DIAGRAM | RESULTS