1. Concept of Basic Electrical and Electronics Engineering

2. Digital Logic and Microprocessor (AExE02)

3. Programming Language and Its Application

4. Computer Organization and Embedded System (ACtE04)

5. Concept of Computer Network and Network Security System ACtE05)

6. Theory of Computation and Computer Graphics (ACtE06)

7. Data Structures and Algorithm, Database System and Operating System (ACtE07)

8. Software Engineering and Object-Oriented Analysis & Design (ACtE08)

9. Artificial Intelligence and Neural Networks (ACtE09)

10. Project Planning, Design and Implementation (AALL10)

COMPLETE NOTES -ALL TOPIC

Number System

  • Question: What is the binary equivalent of the decimal number 25?
    a) 11001
    b) 10101
    c) 11111
    d) 10001

  • Answer: a) 11001
    Explanation: To convert decimal 25 to binary, repeatedly divide by 2 and note the remainders from bottom to top: 25/2 = 12 R 1, 12/2 = 6 R 0, 6/2 = 3 R 0, 3/2 = 1 R 1, 1/2 = 0 R 1. The binary equivalent is 11001.
  • Question: What is the octal equivalent of the binary number 110101?
    a) 155
    b) 65
    c) 315
    d) 65.1

  • Answer: a) 155
    Explanation: Group the binary digits into sets of three from right to left (110 101), then convert each set to its decimal equivalent (6 5). The octal equivalent is 65.
  • Question: Which of the following is a valid hexadecimal digit?
    a) 8
    b) G
    c) 2F
    d) 14

  • Answer: c) 2F
    Explanation: Hexadecimal uses digits 0-9 and letters A-F, where A=10, B=11, ..., F=15. Therefore, 2F is a valid hexadecimal representation.
  • Question: What is the decimal equivalent of the hexadecimal number 1A?
    a) 16
    b) 26
    c) 21
    d) 31

  • Answer: b) 26
    Explanation: In hexadecimal, A is 10 and 1A is (1 * 16) + 10 = 16 + 10 = 26 in decimal.
  • Question: How many bits are required to represent 64 different values?
    a) 4
    b) 6
    c) 8
    d) 10

  • Answer: c) 8
    Explanation: To represent 64 values, you need 2^6 bits, as 2^6 = 64.
  • Question: What is the binary complement of 101001?
    a) 110110
    b) 010110
    c) 101001
    d) 010010

  • Answer: b) 010110
    Explanation: The 1's complement is obtained by changing 1s to 0s and 0s to 1s. The 2's complement is then obtained by adding 1 to the 1's complement.
  • Question: Which of the following is a power of 2?
    a) 15
    b) 16
    c) 25
    d) 32

  • Answer: b) 16
    Explanation: A power of 2 is a number that can be expressed as 2^n, where n is an integer. 16 is 2^4.
  • Question: What is the binary sum of 1011 and 1101?
    a) 11000
    b) 10110
    c) 10100
    d) 10010

  • Answer: d) 10010
    Explanation: Binary addition: 1011 + 1101 = 11000. Ignore the overflow and the correct sum is 0010, which is 10 in decimal.
  • Question: In the BCD (Binary Coded Decimal) system, what is the maximum decimal number that can be represented by a 4-bit binary code?
    a) 7
    b) 9
    c) 15
    d) 10

  • Answer: d) 10
    Explanation: BCD uses 4 bits to represent each decimal digit, so the maximum value with 4 bits is 9.
  • Question: Which of the following is not a valid binary number?

a) 101010
b) 11011.01
c) 111100
d) 1001

Answer: b) 11011.01

Explanation: Binary numbers only contain 0s and 1s. The presence of a decimal point makes the number invalid in the binary system.