2.  Do the following conversions:  Solve the following:  1101.1011+10001.01  1011011-011010  101100/100  10010*110 DecimalOctalHexadecimalBinary 78-- -73-- --FA- ---0101001

3.  Subtract using 2’s Complement ◦ 11001111 from 1111001001001  Encode data bits 1001 into 7 bits even parity hamming code.  Represent Decimal no 8620 in:  BCD  Excess 3 code  2421 code  As a binary number

4.  Write a short note on the following:  ASCII code  EBCDIC code  Simplify the following expression by K-Map:  Y(A,B,C,D)=∑(0,2,4,6,8,10,12,14,15)  AB’C+ABC’+A’BC+ABC+AB’C’+A’B’C’  F(A,B,C,D)= ∑(0,2,3,6,7,12,13,14)+ ∑D(1,4,11,15)

5.  Explain NAND & NOR as an universal gate.  Distinguish between demultiplexer & decoder.