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The circuit of the BCD-to-seven-segment code converter has four binary inputs. Code Converter The BCD-to-excess-3 code converter converts a given BCD.
Excess-3 to BCD converter In this post on code conversions, we are going to see Excess-3 to BCD converter using k map technique. If you are unfamiliar with this topic, have a look to the Excess-3 to BCD converter: EXCESS-3 INPUT BCD OUTPUT E3 E2 E1 E0 B3 B2 B1 B0 0 0 0 0 X X X X 0 0 0 1 X X X X 0 0 1 0 X X X X 0 0 1 1 0 0 0 0 0 1 0 0 0 0 0 1 0 1 0 1 0 0 1 0 0 1 1 0 0 0 1 1 0 1 1 1 0 1 0 0 1 0 0 0 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1 1 1 1 0 1 1 1 0 0 0 1 1 0 0 1 0 0 1 1 1 0 1 X X X X 1 1 1 0 X X X X 1 1 1 1 X X X X The excess-3 input starts only from 2, so the don’t care conditions are added for BCD output (o,1,2). The Binary Coded Decimal has only 10 i.e (3 to 12) and the remaining are don’t care conditions. K-map for B3: Also, read: K-map for B2: K-map for B1: K-map for B0: Logic Diagram: Why code converters are needed?. To successfully retrieve the information sent from the sender. To securely send the data. To avoid stealing of data.
Here we have discussed only a few code converters but in reality, there are more code converters. The code conversion is only possible if a sender and receiver know the logic behind conversion or it should be guessed. Just watch a movie Interstellar, if you want the best example. Let me cover it short, In that movie, the receiver guesses a pattern which was sent from space.
I suggest watching that movie once for better clarification. Another example was, an unknown “WOW” signal received from somewhere. It was believed that the signal has come from aliens. Still, we can’t get identify the complete pattern. Check these articles related to ‘WOW’ signal. If you need some other information related to code conversion or Excess-3 to BCD converter using k map technique, comment below. You may also like.
BCD to Excess-3 converter In this post on a code converter, we are going to see BCD to Excess-3 converter using the technique. If you are new to this topic BCD to Excess-3 Converter, better have a look on to. BCD to Excess-3 using K-map.
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BCD to Excess-3 conversion: BCD INPUT EXCESS-3 OUPUT B3 B2 B1 B0 E3 E2 E1 E0 0 0 0 0 0 0 1 1 0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 1 0 0 1 1 0 1 1 0 0 1 0 0 0 1 1 1 0 1 0 1 1 0 0 0 0 1 1 0 1 0 0 1 0 1 1 1 1 0 1 0 1 0 0 0 1 0 1 1 1 0 0 1 1 1 0 0 1 0 1 0 X X X X 1 0 1 1 X X X X 1 1 0 0 X X X X 1 1 0 1 X X X X 1 1 1 0 X X X X 1 1 1 1 X X X X A BCD ( ) can be converted into Excess-3 by Taking the 3 rd value as a start and continue up to 9. After the 9, make it as a don’t care. A don’t care is a condition which can be used in.
There is no necessity for all the don’t care should be mapped, a don’t care should be mapped only if it is needed. All the procedure for mapping remains the same. K-map for E3: Here K-mapping is done with the don’t care conditions. Here on the red framed section, there is two 1’s.
Here don’t care condition also mapped because to make it a higher possibility of mapping i.e 8. (You should always map towards a higher possibility) Next, to 8, the preference should be given to 4. The green framed and a blue framed section has the mapping of 4 respectively. K-map for E2: Here the mapping is done for 4 elements and 2 elements since there is no availability for mapping the 8 elements. (Mapping can be done anyways like the above k-map, elements are mapped with the first row and last row. Mapping can also be done for the first column and last column if it is necessary.) K-map for E1: Here the mapping is done for 4 elements since there is no possibility for 8 elements mapping. On the third column don’t care is included because to make the preference to 4.
K-map for E0: Here also the mapping is done for 4 elements. Logic Diagram: Remember don’t care conditions should be mapped only if it is necessary to make higher order mapping. Note: On can get a different logic diagram rather than the one which was shown above because of simplifaction. Don’t worry about the logic, just draw a logic diagram as per your simplified value. You may also like:.