Design Problem A display driver Integrated Circuit (IC) for a seven-segment LCD display can be seen below in Figure 1.

Figure 1 – 7 segment display driver IC Using the truth table, in Table 1, it is possible to model this system using digital logic gates. The assignment task is as follows:

1. Derive the Boolean expression for the output 'g' in terms of its sum of products (SoP). 2. Further simplify this expression without the use of K maps.. 3. Make up this circuit using logic gates in Multisim and simulate it to obtain a truth-table proving

correct operation.

4. Find the SoP simplification of the circuit using a K-Map. 5. Find the Product of Sums (PoS) simplification using a K-Map.

6. Comment on how each circuit has simplified and whether the solution using SoP or PoS is simpler. 7. Derive the NOR equivalent circuit of your best simplification from parts 4 and 5 above and simulate it in Multisim to show correct operation.

o Implement this circuit in Multisim and simulate to verify that it is correct. o Implement this circuit in Multisim and simulate to verify that it is correct.

A B C D a b c d e f g Displa 0 0 0 0 1 1 1 1 1 1 0 "0" 0 0 0 1 0 1 1 0 0 0 0 "1"

0 0 1 0 1 1 0 1 1 0 1 "2"

0 0 1 1 1 1 1 1 0 0 1 "3" 0 1 0 0 0 1 1 0 0 1 1 "4"

0 1 0 1 1 0 1 1 0 1 1 "5"

0 1 1 0 1 0 1 1 1 1 1 "6" 0 1 1 1 1 1 1 0 0 0 0 "7"

1 0 0 0 1 1 1 1 1 1 1 "8"

1 0 0 1 1 1 1 1 0 1 1 "9"

Table 1 – Truth table for 4 input, 7 output display driver IC y

Presentation of Evidence

A technical report which will need to include the following:  Boolean expressions where relevant (use equation editor in MS office to write these!)

 The schematic capture part of Multisim to show the circuit(s) you are simulating.  The simulated results.  Diagrams of your K-Maps.

 Concise, yet informative commentary on the above to demonstrate your understanding of the subject matter throughout the report.

Good luck! Document Creation Tips In order to take screenshots of your work in Windows 7, the snipping tool can be used. A video

demonstrating the snipping tool can be found at: http://windows.microsoft.com/en-GB/windows7/products/features/snipping-tool

Make sure your screenshots are legible….I can't mark what I can't read/see! Make sure you're overall file size isn't above 20MB. Details on how to compress your pictures in Word can

be found at (select the option for print resolution (300dpi) to keep the quality high):

http://www.youtube.com/watch?v=wNYkEuKcViM (PowerPoint 2010, but instructions are the same for

Word 2010) If you're creating your document on anything OTHER than MS Word on a Windows PC, then I recommend

submitting your file as a PDF to ensure that the formatting is correct on the version I mark! o No more than 1000 words should be necessary in this respect.