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Heeeeeelp please easy for u?by luizza
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#1
Apr2205, 10:29 AM

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Digital Logic Design Lab
(do this project with circuit maker design (7485 comparator)) Design 8 bit adder/subtractor (a+b, or ab) with following: specifications: 1. Inputs: tow operands [A,B](8bit each), operation(0addition,1subtraction), load(1load new data,0perform operation). 2. Outputs: 9  bit (8bit will be stored in A again). 3. Modes of operations: a. Check if B is 0, then the output will be A. b. Check if A is 0, then the output will be B OR B' depend on the operation. c. Otherwise , perform the addition or subtraction. 4. Display result on two seven segment displays + 1 LED. please if u know the answer help me and i will be thankfull i do it dut there is a problem and this is my attachment please do it for me?? 


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