Tag Archives: 8m


What do you understand by a decision-control statement? Give an example of each. 8m Jun 2010

What do you understand by a decision-control statement? Give an example of each. 8 In a C program, a decision causes a one-time jump to a different part of the program, depending on the value of an expression. Decisions in C can be made in several ways. The most important is with the if…else statement,… Read More »

Write a program in ‘C’ to check whether the given year is leap or not. Also explain the logic of the program. 8m Dec2008

Write a program in ‘C’ to check whether the given year is leap or not. Also explain the logic of the program. 8m Dec2008 The leap year formula is: A leap year is divisable by 4, but not by 100 (except if divisable by 400.)   #include<stdio.h> void main(){ int year; clrscr(); printf(“Enter any year:… Read More »

Explain the operation of a micro programmed control unit with the help of a diagram. 8m Jun2008

Explain the operation of a micro programmed control unit with the help of a diagram. 8m Jun2008   THE MICRO-PROGRAMMED CONTROL The logic of the control unit is specified by a micro-program. A micro-program is also called firmware (midway between the hardware and the software). It consists of: (a) One or more micro-operations to be… Read More »

Draw logic circuit for a converter that converts 4 bit binary input to its equivalent BCD number. 8m Jun2008

Draw logic circuit for a converter that converts 4 bit binary input to its equivalent BCD number. 8m Jun2008 A four bit number can be any number value between 0 to 15  i.e.  0 to F in Hexadecimal. BCD is a number which is represented in binary as a decimal number hence it can have… Read More »

Simplify the following Boolean function in SOP form using K-Map: F (A, B, C, D) = Σ ( 0,1, 2, 4, 6, 8, 9, 12, 14, 15 ). Draw logic circuit diagram. 8m Jun2008

Simplify the following Boolean function in SOP form using K-Map: F (A, B, C, D) = Σ ( 0,1, 2, 4, 6, 8, 9, 12, 14, 15 ). Also, draw the simplified logic circuit diagram. 8m Jun2008  K-Map for F is: Thus, the simplified equations for F (A, B, C, D) = Σ (0,1, 2, 4, 6,… Read More »

Differences between structure and union in C programming with example

What are the differences between structure and union? Give one illustrative example of usage of the union. 8m Jun2008 Structure in C programming Structure is commonly referred to as a user-defined data type. C’s structures allow you to store multiple variables of any type in one place (the structure). A structure can contain any of… Read More »

Design and draw a 3 x 8 decoder using NOT gates and AND gates and explain its working. 8m Jun2007

Decoder converts one type of coded information to another form. A decoder has ‘n’ inputs and an enable line (a sort of selection line) and 2n output lines. Let us see diagram of 3×8 decoder which decodes a 3 bit information and there is only one output line which gets the value 1 or in… Read More »

Simplify Boolean function using Karnaugh map method F(A,B,C,D) = Σ(1,2,5,6,7,8,9,11,12,15) Also, draw the corresponding logic circuit diagram. 8m Jun2007

Simplify the following Boolean function using Karnaugh map method F( A ,B , C , D ) = Σ ( 1, 2 , 5 , 6 , 7 , 8 , 9 , 11 , 12 ,15 ) Also, draw the corresponding logic circuit diagram. 8m Jun2007   K-Map for F is: Thus, the simplified equations for F (A,… Read More »

Explain the following: Parity bit, Floating point notation, Refresh rates in video controllers and an l/O channel 8m Jun2006

Explain the following with the help of an example or a diagram, whichever is appropriate:    8m jun2006 (i)                 Parity bit (ii)               Floating point notation (iii)             Refresh rates in video controllers (iv)             An l/O channel     Parity bit An error bit changes from 0 to 1 or 1 to 0. One of the simplest… Read More »