9th Computer Chapter # 3 Online Test

1) A.(A+B) simplifies to:

2) What does A+(A.B) simplify to be absorption law?

3) What is the Associative form of (A .B ) .C?

4) Which law states (A +B ) +C =A + (B +C )?

5) What does A+B equal to in the commutative law?

6) According to the idempotent law. A+A equals:

7) What is the result of A.0 according to Null law?

8) According to the Null law, A+1 equals:

9) What is the result of A+0 using identity law?

10) What is the dual of the Boolean expression A.0=0?

11) ...... is used in logic diagrams to represent operations:

12) What is the output of an XOR gate when both inputs are true?

13) What is the output of a NAND gate when both inputs are true?

14) Which gate combines AND and NOT functions?

15) The maximum number of inputs for an NOT gate is:

16) When the input to an NOT gate is HIGH(1), the output is:

17) What is the output of an OR gate if one input is true?

18) Which gate outputs true only when both inputs are true?

19) In a logic gate, what does true represent?

20) Logic gates performs:

21) ...... shows possible inputs values and corresponding output values of a logic circuit:

22) Boolean algebra laid the foundations for:

23) When was George Boole born?

24) Who invented Boolean algebra?

25) Boolean functions produces:

26) The output of a Boolean functions is always:

27) Boolean functions are important in:

28) Boolean functions describe the functions between:

29) The result of NOT 1 is:

30) What does the NOT operation do?

31) In Boolean logic 1+1=

32) What is the output of 1 and 0?

33) The symbol + represents which Boolean operation?

34) What symbol represent the AND operation?

35) Which of the following is used to process binary variables?

36) Boolean algebra uses the values:

37) What is the decimal equivalent of the binary number 1101?

38) Which logic gate outputs true only if both inputs are true?

39) Which of the following Boolean expression represents the OR operation?

40) A binary digit is also known as:

41) The voltage levels used in digital circuits are called:

42) The digital logic is based on:

43) Which device typically uses on ADC?

44) Which device typically uses a DAC?

45) In ADC, analog signals are converter to:

46) What does ADC stand for?

47) What kind of signal used in modern computing systems?

48) Which of the following singles has only two possible values?

49) Which of the following is an example of an analog signal?

50) What kind of single changes continuously over time?

51) The two binary digits used in digital systems are: