 Part I (10 marks)

(Attempting all the answers in this part is compulsory)

1. Convert the following Hexadecimal to binary & decimal 
1. F8     b.   1A        c.  3B                   d.   ACE
2. Perform binary multiplication on the following                     
1. 1010*101           b.1101*0101
3. Convert the following into decimal                                              
1. 1101010    b. 01.111   c. 1001.00101    d. 1010111

Part II (20 marks)

(Attempt any two questions)

Question1.

1. Explain with logic gate diagram why NAND & NOR gates are called universal gates?                                                
2. Explain Full adder circuit with help of logic gate diagram, truth table, Boolean expression?                                      

1. Draw logic gate diagram of (x+y+z).(x’+y+z’) using basic gates.       
2. Explain what is truth table?                                                 
3. Draw logic gate diagram for the following using NOR gate
1. P’Q’+PQ+QR                           

Q3

1. Prove that for the following using truth table?                  
1. A.(A+B)=A
2. (A.B).A’=0
2. Expand the following                                   
• ASCII
• EBCDIC
• ISCII 3. Explain the rule for binary subtraction?                    
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