Question 1

Pitch is the highness or lowness of a sound.

Accepted Answer

This statement is true. Pitch refers to how high or low a sound is, and is determined by the frequency of the sound wave. Higher frequencies result in higher pitched sounds, while lower frequencies result in lower pitched sounds.

Question 2

The sum-of-products algorithm always produces an optimal circuit.

Accepted Answer

False

Question 3

An arithmetic overflow is an error condition that occurs when an operation in a computer produces a number that exceeds the maximum allowable value.

Accepted Answer

An arithmetic overflow occurs when a calculation produces a value outside of the range that can be represented in the computer's memory. This may happen when performing operations on integers or floating-point numbers.

Question 4

To construct an OR gate, two transistors are connected in parallel.

Accepted Answer

In an OR gate, two or more transistors are connected in parallel to allow the output to be high if any of the inputs are high.

Question 5

In an analog representation, objects can take on any value.

Accepted Answer

In analog representation, objects can take on any continuous value, unlike digital representation where values are discrete.

Question 6

A decoder has only 1 output line.

Accepted Answer

A decoder has multiple output lines, typically one for each possible input combination.

Question 7

A stark black/white image has greater storage requirements than an image represented using a gray scale.

Accepted Answer

A stark black/white image only needs to store binary information (1's and 0's) for each pixel, while a grayscale image needs to store a range of values for each pixel, resulting in a larger file size.

Question 8

Analog signals must first be digitized to be stored in the computer.

Accepted Answer

Analog signals are continuous and need to be converted into digital signals in order to be stored in a computer. This process is called analog-to-digital conversion (ADC). Once converted, the digital signal can be processed and manipulated by the computer.

Question 9

A byte consists of 16 bits.

Accepted Answer

A byte consists of 8 bits.

Question 10

Information is stored in the memory of a computer using the decimal numbering system.

Accepted Answer

Information is stored in the memory of a computer using the binary numbering system, not the decimal numbering system.

Question 11

The way information is stored in the memory of a computer is known as the magnetic core of information.

Accepted Answer

The way information is stored in the memory of a computer is through a series of electronic switches called transistors, not magnetic cores. Magnetic cores were used in early computer memory technologies, but have since been replaced by more efficient methods.

Question 12

Two's complement is a signed integer representation that does not suffer from the problem of two zeros.

Accepted Answer

In two's complement, the most significant bit is used as a sign bit, which eliminates the problem of having both positive and negative zero values. Therefore, the statement is true.

Question 13

After we normalize a number, its first significant digit is immediately to the left of the binary point.

Accepted Answer

- right

Question 14

Sequential circuits contain feedback loops.

Accepted Answer

Sequential circuits store information and use it to determine the next output. This requires feedback loops between different parts of the circuit to keep track of past inputs and outputs.

Question 15

Every Boolean expression can be represented pictorially as a circuit diagram, and every output value in a circuit diagram can be written as a Boolean expression.

Accepted Answer

This statement is true, as Boolean expressions can be easily represented as logic gates in a circuit diagram and vice versa.

Question 16

To construct an AND gate, two transistors are connected in parallel.

Accepted Answer

To construct an AND gate, two transistors are connected in series, not in parallel.

Question 17

The binary-to-decimal algorithm is based on successive divisions by 2.

Accepted Answer

The binary-to-decimal conversion is based on multiplying each binary digit by 2 raised to the power of its position and summing all these values, not on successive divisions by 2.

Question 18

ASCII mapping is the process of assigning a printable letter in our alphabet a unique number.

Accepted Answer

The answer of ASCII mapping is the process of assigning...

Question 19

A multiplexor has 2^N output lines.

Accepted Answer

This is not a valid format for describing a multiplexor. The format typically used for a multiplexor is of the form 2^N input lines and N output lines. The given format has several different types of lines (S, U, P, NS) and does not follow this standard format.

Question 20

The Boolean AND is a unary operator.

Accepted Answer

The Boolean AND is a binary operator, as it takes two operands to perform the logical operation.

Quiz 4: The Building Blocks: Binary Numbers, Boolean Logic, and Gates