Hello dude as you want the BCA Semester IV Exam Papers of IGNOU so here I am providing you the same…..

1. (a) Find the l's and 2's complement for the following
Fixed-point numbers r
(i) 1100101
(ii) 00110011
(b) Convert the lollowing :
(i) Decimal number 56 125 to binary
(ii) Binary number 1011.0101 to octal
(c) What is a ripple-counter? Design a 4-bit ripple
Counter using JK-flip flops and explain its
Functioning.

(d) Using 4 x I multiplexers, design a four bit bus system
and exPlain Your design.
2. (a) Explain the following Arithmetic Instructions of 8086
with the helP of an examPle lor each :
(i) ADC
(iil DIV
(iii) cMP
(iv) DEC
(b) Map the function having four variables in a
Karnaugh's maP and simPlifY :
F(A, B, C, D) = X(2,3,5,9, ro, 11, 12, 14' 15)
(c) Deline a microinstruction. Give an example'
Differentiate between Branching and Non-branching
microinstructions.
g. (a) Write an assembly language program to swap the
rralues of two variables'
(b) Use J-K flip flops to design a 3 bit counter' Explain
'
your design.
4. (a) Discuss the Polling bus arbitration meihod' 7
(b) Design and explain a 4 x 16 decoder' I

.Expfain the foffowing : 5x3=15
(i) D-flip flop and its application
(ii) Interleaved memories
(iii) Register Indireci Addr€ssing mode
(iv) Fetch cycle and Execute cycle
(v) Use of code segment register

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Attached Files

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