# Unit IV: Combinational Logic with MSI and LSI | BCA 1st Semester Digital Logic System Notes Pdf

Boolean functions are meant to be simplified in order to provide an algebraic expression with fewer literals and logic gates. Low-cost circuit implementation is the outcome of this. The preceding sections' descriptions of the design process for combinational circuits are meant to reduce the number of logic gates needed to accomplish a particular function. This traditional method creates the logic circuit with fewer gates on the grounds that it will be less expensive. However, this idea is always true in actual design because of the introduction of many integrated circuits (IC).

Since many logic gates are included in a single IC package, it is cost-effective to employ as many gates as possible from a used package, even if doing so increases the overall number of gates. It is also more cost-effective to utilize these types of ICs to reduce the external interconnections or wirings among the IC pins as much as feasible because part of the interconnections among the gates in many ICs is internal to the chip.

In this “Combinational Logic with MSI and LSI - Digital Logic System” you will learn about the following topics:

1. Introduction to Combinational Logic with MSI and LSI
2. Design procedures
3. Half and full adders
4. Subtractors
5. Code conversion:
6. BCD to excess- 3
7. 8, 4,-2,-1 code to BCD
8. 2, 4, 2, 1 code to 8, 4, -2, -1 code
9. Decoder and Encoder
10. Multiplexers and Demultiplexers
11. BCD to seven segment decoder
12. ROM and its implementation
13. PLA

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The article Combinational Logic with MSI and LSI - Digital Logic System is contributed by Aakrity Chapagai, a student of LA GRANDEE International College.

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