Question

Digital Logic Fundamentals. Need help with this assignment!!!

Want to make sure I'm on the right track with the truth table and K-MAPS.

Also I'd like to know how to design the LOGISIM circuit.

Thank you.

igital Logic Fundamentals An Excess-3 code exists for the following reason: The primary advantage of excess-3 coding over non-biased coding is that a decimal number can be nines' complemented (for subtraction) as easily as a binary number can be ones' complemented: just by inverting all bits. That won't make any sense except..it's useful We shall be discussing complement sy stems again later in the course -just know that this code is useful Design logic to accept 4 inputs A, B, C and D which is a number in the range 0 to 9. Inputs 10 to 15 will never be input to your circuit so the corresponding cells in the Karnaugh map will be "don't cares" (X). (Budget, 4 pins per circuit total for input. I don't want several separate circuits). The outputs will be W, X, Y and Z, representing, in binary, the input number plus three. Line up your outputs in a line horizontally, from left to right W (8's), X( 4's), Y (2's) and Z (1's). This is the final design and simulation that is combinational. Counters next, then multiplexers. So, fill out the table below knowing that "D" is the "eights" of the inputs and that "W" is the eights of the outputs Design and implement a minimal circuit with D, C, B, A as inputs (4 pins only total appearing on your circuit) which should be displayed on l.e.d.s, and outputs W, X, Y and Z, which should also be displayed on l.e.d.s. Use the LABEL property for pins and l.e.d.s to place a meaningful label on inputs and outputs. There is a budget of only 4 pins and only 4 inverters. DO NOT USE MORE THAN THIS BUDGET TOTAL FOR THE WHOLE CIRCUIT. This will be the last of the combinational circuits that you design and simulate Fill out this truth table: NAME AND ID: CD 01 10 01 10 CD 01 01 12 14 15 13 10 10 AB AB 10 CD 00 10 CD 0 01 01 01 10 10 AB 10 CD 00 01 10 CD00 01 01 10 10 Keep AND terms in alphabetical order: Penalty if not. Industry standards. X- Y- LOOP YOUR MAPS. SUBMIT THIS PAGE

Answer 1

0 Oo O o ㅡ.x.x o ol Do