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Author: Admin | 2025-04-28
Quick look, some questions are very interesting while others can be extremely stupid (sorry) – who cares! What matters in my eyes, is that the forum is building a database of questions and answers that can help you and others.I assume that most of my readers are on the passive side of things (just a hunch). I hope this post will make you open an account on one of the forums and start posting.p.s. please use the comments section to recommend your favorite design related forums or groups. Posted in General | 5 Comments » Interview Question – BCD Digit, Multiplied by 5 December 21, 2008 A while back, someone sent me the interview question I am about to describe, asking for help. I think it serves a very good example of observing patterns and not rushing into conclusions.I will immediately post the answer after describing the problem. However, I urge you to try and solve it on your own and see what you came up with. On we go with the question…Design a circuit with minimum logic that receives a single digit, coded BCD (4 wires) and as an output gives you the result multiplied by 5 – also BCD coded (8 wires).So, I hope you got a solution ready at hand and you didn’t cheat 😉 .Let’s first make some order and present the input and required outputs in a table (always a good habit).Looking for some patterns we can see that we actually don’t need any logic
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