Step 1 Addressing the cells of KMap table When you try yourself solving the min-term SOP of for 3 variables, Users can use this online Karnaugh's map solver for 4 variables to verify the results of manual calculations.
#KMAP FOR HALF ADDER TRUTH TABLE HOW TO#
Users may refer the below rules & step by step procedure to learn how to find the minimum sum of products (SOP) for the Boolean expression using 4 variables A, B, C & D. Users may refer the below details to learn more about 4 variables Karnaugh's map or use this online calculator to solve the SOP or generate the complete work for minimum SOP for 4 variables A, B, C & D. For example, the combinations A B C D, A B CD, A BC D, A BCD, AB C D, AB CD, ABC D, ABCD, A B C D, A B CD, A BC D, A BCD, AB C D, AB CD, ABC D & ABCD represents 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 & 15 respectively. The numeric or decimal equivalent for the combinations A, B, C, D, A, B, C & D represents the cell or place values from 0 to 15 in the table of K-Map solver. Any 4 combinations of A, B, C, D, A, B, C & D represents the place values of 0 to 15 to address the cells of table in KMAP solver.įor example, the combinations A B C D, A B CD, A BC D, A BCD, AB C D, AB CD, ABC D, ABCD, A B C D, A B CD, A BC D, A BCD, AB C D, AB CD, ABC D & ABCD represents the binary values of 0000, 0001, 0010, 0100, 0101, 0110, 0111, 1000, 1001, 1010, 1011, 1100, 1101, 1110 & 1111 respectively. Similarly, each inverted variable A, B, C & D equals to 0. Each variable A, B, C & D equals to value 1. For example, the Boolean expression y = ∑Ī is the most significant bit (MSB) and B is the least significant bit (LSB).
The min-term SOP is often denoted by either ABCD, 1s & 0s or decimal numbers. The gray code conversion method is used to address the cells of KMAP table. The four variables A, B, C & D are the binary numbers which are used to address the min-term SOP of the Boolean expressions. It's an alternate method to solve or minimize the Boolean expressions based on AND, OR & NOT gates logical expressions or truth tables. 4 Variables Karnaugh's Map often known as 4 variables K-Map.