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Zero in Computer Science: Delving into Its Importance in Binary Code and Digital Systems

Description: Zero in Computer Science: Delving into Its Importance in Binary Code and Digital Systems
Number of Questions: 15
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Tags: binary code digital systems computer science
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In binary code, the value of a bit is either 0 or 1. What does the bit value of 0 represent?

  1. False

  2. True

  3. Null

  4. Undefined


Correct Option: A
Explanation:

In binary code, the bit value of 0 represents the absence of a signal or a logical state of false.

In digital systems, the concept of zero is crucial for:

  1. Representing the absence of a signal

  2. Performing arithmetic operations

  3. Storing data in memory

  4. All of the above


Correct Option: D
Explanation:

Zero plays a vital role in digital systems by representing the absence of a signal, enabling arithmetic operations, and facilitating data storage in memory.

In binary addition, when adding two 1-bit numbers, what is the result when both bits are 1?

  1. 0 with a carry of 1

  2. 1 with a carry of 0

  3. 0 with a carry of 0

  4. 1 with a carry of 1


Correct Option: A
Explanation:

When adding two 1-bit numbers in binary, if both bits are 1, the result is 0 with a carry of 1.

In binary subtraction, when subtracting a 1-bit number from another 1-bit number, what is the result when the minuend is 0 and the subtrahend is 1?

  1. 1 with a borrow of 1

  2. 0 with a borrow of 0

  3. 1 with a borrow of 0

  4. 0 with a borrow of 1


Correct Option: A
Explanation:

In binary subtraction, when subtracting a 1-bit number from another 1-bit number, if the minuend is 0 and the subtrahend is 1, the result is 1 with a borrow of 1.

In binary multiplication, when multiplying two 1-bit numbers, what is the result when both bits are 1?

  1. 0

  2. 1

  3. 10

  4. 11


Correct Option: B
Explanation:

In binary multiplication, when multiplying two 1-bit numbers, if both bits are 1, the result is 1.

In binary division, when dividing a 1-bit number by another 1-bit number, what is the result when the dividend is 1 and the divisor is 1?

  1. 0 with a remainder of 1

  2. 1 with a remainder of 0

  3. 1 with a remainder of 1

  4. 0 with a remainder of 0


Correct Option: B
Explanation:

In binary division, when dividing a 1-bit number by another 1-bit number, if the dividend is 1 and the divisor is 1, the result is 1 with a remainder of 0.

In digital logic circuits, the value of a logic gate output is determined by:

  1. The input values and the logic operation performed by the gate

  2. The power supply voltage

  3. The temperature of the circuit

  4. The type of semiconductor material used


Correct Option: A
Explanation:

In digital logic circuits, the value of a logic gate output is determined by the input values and the logic operation performed by the gate.

In a digital computer, the central processing unit (CPU) performs arithmetic and logical operations using:

  1. Binary code

  2. Decimal code

  3. Hexadecimal code

  4. Octal code


Correct Option: A
Explanation:

In a digital computer, the central processing unit (CPU) performs arithmetic and logical operations using binary code.

In computer memory, data is stored in the form of:

  1. Binary digits (bits)

  2. Decimal digits

  3. Hexadecimal digits

  4. Octal digits


Correct Option: A
Explanation:

In computer memory, data is stored in the form of binary digits (bits).

The concept of zero in computer science is essential for:

  1. Representing the absence of a signal or a logical state of false

  2. Performing arithmetic operations

  3. Storing data in memory

  4. All of the above


Correct Option: D
Explanation:

The concept of zero in computer science is essential for representing the absence of a signal or a logical state of false, performing arithmetic operations, and storing data in memory.

In binary code, the value of a bit is either 0 or 1. What does the bit value of 1 represent?

  1. True

  2. False

  3. Null

  4. Undefined


Correct Option: A
Explanation:

In binary code, the bit value of 1 represents the presence of a signal or a logical state of true.

In digital systems, the concept of zero is crucial for:

  1. Representing the absence of a signal

  2. Performing arithmetic operations

  3. Storing data in memory

  4. All of the above


Correct Option: D
Explanation:

Zero plays a vital role in digital systems by representing the absence of a signal, enabling arithmetic operations, and facilitating data storage in memory.

In binary addition, when adding two 1-bit numbers, what is the result when both bits are 0?

  1. 0 with a carry of 0

  2. 1 with a carry of 1

  3. 0 with a carry of 1

  4. 1 with a carry of 0


Correct Option: A
Explanation:

When adding two 1-bit numbers in binary, if both bits are 0, the result is 0 with a carry of 0.

In binary subtraction, when subtracting a 1-bit number from another 1-bit number, what is the result when the minuend is 1 and the subtrahend is 0?

  1. 1 with a borrow of 0

  2. 0 with a borrow of 1

  3. 1 with a borrow of 1

  4. 0 with a borrow of 0


Correct Option: A
Explanation:

In binary subtraction, when subtracting a 1-bit number from another 1-bit number, if the minuend is 1 and the subtrahend is 0, the result is 1 with a borrow of 0.

In binary multiplication, when multiplying two 1-bit numbers, what is the result when one bit is 1 and the other bit is 0?

  1. 0

  2. 1

  3. 10

  4. 11


Correct Option: A
Explanation:

In binary multiplication, when multiplying two 1-bit numbers, if one bit is 1 and the other bit is 0, the result is 0.

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