**CS64: Introduction to Computer Organisation** Year: 2006 TEE: December Time 3 Full Marks 75 Question number 1 is cumpulsory. Answer any three questions from the rest.
Q.1(e): Convert the two's complement number 1101 1010 to decimal equivalent.
| **Q.1(f):** Simplify the following boolean function using sum of product form, by K-map: F(A, B, C, D) = Σ (0, 2, 4, 6, 9, 12, 14) and design the circuit.: [6]
**Q.1(g):** Assume that in a 8086 microprocessor the registers have following values: BX = 678B_{H} SI = 23A4_{H} Offset/displacement = 8085_{H} Find the effective address using the above data for the following addressing modes:
- Register Indirect Address (using SI)
- Register Addressing (Using BX)
- Displacement Addressing using base register BX
- Based-Index Relative Addressing of 8086 microprocessor.
: [6]**Q.1(h):** Why is a multiplexer required? How is it different from a decoder? Draw the circuit diagram of a 4 x 1 multiplexer and a 2 x 4 line decoder with enable input and also give the corresponding truth tables.: [6]
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