FREE IGNOU MCS-012 solved assignment 2018-19

(b) Perform the following conversion of numbers:
i) Decimal (56789123)10 to binary and hexadecimal

ii) Hexadecimal (ABCDEF0)H into Octal.

iii) ASCII string “Subject: Computer %$ Sc.” into UTF 8 string
iv) Octal (345123)O into Decimal
(2 Mark)

(c) Design a circuit for the following function:
F(A, B, C, D) = Σ (2,3,4, 5, 10, 11, 12, 13)
Draw the truth table. Use the Karnaugh’s map to design the circuit and draw it
using AND, OR and NOT gates. (4 Marks)

(d) What is the need of a parity bit? Explain with the help of an example. How many
parity bits are needed to detect and correct a single bit error in a 8-bit data?
Explain the process of correction of Single bit error with the help of an example
which is not from your Unit. (4 Marks)

 

(e) Design a two bit down counter (a sequential circuit). The counter states are 11,
10, 01, 00, 11, 10, 01, 00, 11…You should show the state table, state diagram, the
k-map for circuit design and logic diagram of the resultant design using D flipflop
or J-K flip flop. (4 Marks)