Electronic circuits logic design lab manual

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Necessary Necessary. Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information. Only one value can change at a time in adjacent rows or columns.

For example, in Table 5, the columns change from 00 to 01 to 11 to Table 5 illustrates the K-map for the ATM example. To develop the simplified Boolean equation , look for the cells that have the 1 value in common.

Look for cells that can physically be boxed together, where the number of cells in the box is a power of 2 1, 2, 4, or 8 and so on. The boxes are allowed to overlap so the same cells can be used more than once.

Look for the biggest boxes first, and keep finding smaller boxes until all the cells with a 1 in them are used. This means that sometimes just single cells will remain at the end. In this example, all the cells containing a 1 were covered with two boxes. This means is that if the conditions for either box are true, the output will be true. This also means that the simplified Boolean equation will only have two terms.

The term for each box can be determined by observing which variables are constant throughout each cell of that box. For the red box, only remains constant through the four cells. For the blue box, and remains constant through the two cells, while switches from the left cell to the right cell. The two boxes yield the simplified Boolean equation shown in Figure 4. This equation meets the conditions in the truth table in Table 1 and achieves the desired result with the minimum number of logic elements.

Lastly, a combinational logic circuit can be created using the simplified equation. Then, the and inverted are inputted into an AND gate, as denoted by them being multiplied in Figure 4.

Finally, the result of the AND operation between the and inverted and the are inputted into an OR gate, as denoted by the addition function in Figure 4. The final combinational logic circuit can be seen in Figure 5. Farmer Georgi owns a acre dairy farm in upstate New York. It is imperative that Farmer Georgi protects the hen that produces eggs for his business.

Farmer Georgi has two barns, one hen, and a supply of corn. A fox has been attempting to eat the hen by hiding in a barn. The hen can move freely from one barn to the other. Farmer Georgi sometimes stores corn in one barn and sometimes in the other, but he never stores it in both at the same time. The hen would like to eat the corn and the fox would like to eat the hen. Farmer Georgi needs an alarm system that uses digital logic circuits to protect the hen and the corn.

The design should use the fewest logic gates and input variables possible. The alarm will sound if:. If the procedure is completed without verifying that the ICs work, problems may occur in the circuit that require additional time and troubleshooting. First, load the chip onto the Arduino board Figure 6 and start the Serial Monitor on the Arduino program. The code compares those results to the expected result.

The goal is to determine if the gates are outputting the correct results. After, remove the chips carefully from the Arduino board. The lab work is now complete. Please clean up the workstation. Return all unused materials to a TA. The following points should be addressed in the appropriate section of the lab report. Remember: Lab notes must be taken.

Experimental details are easily forgotten unless written down. Use the lab notes to write the Procedure section of the lab report. One point of extra credit is awarded if the lab notes are attached at the end of the lab report. Keeping careful notes is an essential component of all scientific practice. Follow the presentation guidelines laid out in the EG Lab Presentation Format in the Technical Presentations section of the manual. When preparing the presentation, consider the following points.

Boole, George , Encyclopedia Britannica, Encyclopedia Britannica Online. Jump to: navigation , search. Figure 1: Logic Gate Symbols.

Figure 7: IC Numbers and Pins. Laboratory Experiments. Back to Main Page.