Course Code Course Title
: :
MCS-012 Computer Organisation and Assembly Language Programming
Assignment Number Maximum Marks Weightage Last Dates for Submission
: : : :
MCA(1)/012/Assign/08
100 25% 15th April, 2008 (For January Session) 15th October, 2008 (For July Session)
There are four questions in this assignment, which carries 80 marks. Rest 20 marks are for viva voce. You may use illustrations and diagrams to enhance the explanations. Please go through the guidelines regarding assignments given in the Programme Guide for the format of presentation. Answer to each part of the question should be confined to about 300 words. Q1: (a)
Use an 8 bit binary representation for integer using signed 2’s complement notation. Use this representation to perform the following operations on decimal numbers: (2 marks) (i) Add – 52 and 60 (ii) Subtract 20 – 100 Please indicate the overflow if it occurs.
(b)
Convert the hexadecimal number F5B6D3 to binary and octal.
(2 marks)
(c)
Write your father’s name in ASCII using 8 bit code with the leftmost bit always 0. Include a space between names. (1 mark)
(d)
Draw a logic diagram of a 2 to 4 line decoder with only NOR gate. Include an enable input E so that the circuit is enabled when E=1 and disabled when E=0. Also list the truth table. (5 marks)
(e)
A sequential circuit has two D flip flops A and B, two inputs x and y and one output z. Flip flops input equations and the circuit output are as follows: DA = x’y + xA (5 marks) DB = x’B + xA Z=B
(f)
(i)
Draw the logic diagram of the table.
(ii)
Tabulate the state table.
Represent the number (55.5) 10 on a floating-point binary number with 24 bits. The normalized fraction mantissa has 16 bits and the exponent has 8 bits. (5 marks)
Q2: (a)
(b)
Design a counter with the following repeated binary sequence: 0, 1, 2, 3, 4, 5, 6, 7, 8 using JK Flip Flop.
(5 marks)
Draw a pipeline configuration to carry out the following task:
(5 marks)
(Ai + Bi + Ci + Di) (Ei – Fi). List the contents of all the registers in the pipeline for i = 1 through 6.
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