Exploring the Basics of Computer Science

What does binary representation mean in computers?

• A method to represent data using only two states: on and off

• A technique to store data using electrical noise

• A way to represent data using multiple states

• A system to represent numbers using decimal points

Why do computers use binary?

• To increase the speed of computations

• To store more data in less space

• Because it's easier to build physical components

• To minimize signal issues and represent true/false values

Who introduced Boolean Algebra?

• Charles Babbage

• George Boole

• Albert Einstein

• Isaac Newton

What is the main advantage of using Boolean Algebra in computers?

• It allows for the representation of complex data structures

• It simplifies arithmetic calculations

• It provides a framework for manipulating true/false values

• It enhances the graphical capabilities of computers

What does a NOT operation do?

• Duplicates the input boolean value

• Compares two boolean values

• Combines two boolean values

• Negates the input boolean value

How can transistors represent a NOT operation?

• By inverting the input signal

• By allowing current to flow only when input is on

• By blocking current regardless of input

• By allowing current to flow when input is off

What is required for an AND operation to output true?

• At least one input is true

• Both inputs are false

• Both inputs are true

• Neither input is true

What does an AND gate output when both inputs are false?

• The gate does not accept two false inputs

• True

• False

• The output is unpredictable

What is the difference between OR and XOR operations?

• XOR outputs true only if both inputs are true

• There is no difference

• XOR outputs true only if one input is true and the other is false

• OR outputs true only if both inputs are false

In what scenario does an XOR operation output true?

• When both inputs are true

• When both inputs are false

• When one input is true and the other is false

• XOR always outputs true