# User:Anjuagrawal/Assignments

**B.Sc.(Hons) Electronics II Year**
Assessment I
Max.Marks:25 Time: 1Hr

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Q1. | IF 10111010 is a signed binary number, what is its decimal equivalent? | 1 |

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Q2. Find the Gray code of the binary no. 101101101? What is the significance of the Gray code? 2 Q3. What range of signed and unsigned values can be represented in 8 bits? 2 Q4. Add 78910 to 18310 in 8421 BCD 2 Q5. (355.125)10 = (x)8 = (y)16 = (z)2 Find x y and z. 3 Q6. Subtract 10011.11 from 1000001.0001 using 1’s complement and 2’s complement method 4 Q7. Find the decimal equivalent of (AE4)16 1 Q8. ) Perfor Perform 2’s complement subtraction on decimal numbers using 8 bits 4210 - 9010 3 Q9. Which code is referred to as ‘REFLECTIVE CODE’? Why? 1 Q10 Perform XS3 addition 2 Q11. Differentiate between LCD and LED 2 Q12 Express 7892 in BCD 2421 and Excess-3 code. 2