Sound and images are sampled and stored by:

By the end of this lesson, you will be able to describe key terms such as sampling, resolution, and storage.

Storing data digitally has both advantages and disadvantages. Which of the following best summarizes the pros and cons of digital data storage?

Applying your knowledge of digital data can be done through which of the following methods?

What is the process of changing data from one form to another (e.g., analogue to digital) called?

What is the term for taking small measurements of a continuous signal at regular intervals to create digital data?

What is the amount of detail in a digital image or sound, often measured in pixels or bits, called?

What is the process of saving digital data on a device or medium so it can be accessed later called?

Fill in the blank: ________ data is continuous, like the hands of a clock or the grooves on a record.

Fill in the blank: ________ data is made up of discrete steps, like the numbers on a digital watch or the 1s and 0s in a computer.

Analogue data must be converted to digital so computers can process and store it.

One real-world example of analogue data is:

One key difference between analogue and digital data is:

It is necessary to convert analogue data into digital data for computers because:

What is analogue to digital conversion (ADC)?

Analogue to digital conversion involves measuring the analogue signal at regular intervals and turning those measurements into numbers.

What is the process called where the analogue signal is measured at set intervals and each sample records the signal’s value at that moment?

What happens during quantisation in ADC?

During encoding in ADC, what are the quantised values converted into?

What does 'Sampling Rate' refer to in the context of sound?

What does 'Bit Depth' refer to in digital audio?

Fill in the blank: CD audio uses a sampling rate of ______ Hz and ______-bit depth.

When converting analogue sound to digital, the ____ rate determines how often samples are taken, while ____ depth dictates the accuracy of each sample through a process called ____.

What are pixels in digital images? Fill in the blank: Images are stored as grids of tiny squares called ______. Each pixel holds a colour value.

What does resolution mean in digital images? Fill in the blank: The number of pixels in an image (width × height) is called ______. Higher ______ means more detail and a clearer image.

Which of the following is an example of a resolution for a smartphone photo?

What type of data is stored in a physical form?

Digital data has a ______ range of values.

What does ADC stand for?

A microphone uses an ______ to convert sound to digital data.

What does DAC stand for?

A groove replicates the sound wave.

Wave is sampled to store in binary.

What is one advantage of digital storage related to finding and sharing files?

Which advantage of digital storage refers to storing vast amounts of data in small physical spaces?

Which advantage of digital storage involves protecting data with passwords and encryption?

What advantage of digital storage allows you to access files from any device, anywhere?

What is one disadvantage of digital storage that involves loss of detail due to sampling, especially with low rates or bit depth?

What is one disadvantage of digital storage where digital files can be hacked or corrupted if not properly protected?

What is one disadvantage of digital storage that refers to the high cost of high-quality storage and backup systems?

What is one disadvantage of digital storage that involves the need for careful organisation and maintenance of large amounts of data?

Which term is defined as 'A continuous signal or form of data, like real-world sounds and light'?

Which term is defined as 'Data in a discrete, computer-friendly form using 1s and 0s'?

Which term refers to 'the real-world source being converted by the ADC'?

Which term is defined as 'Regular measurement of an analogue signal to create digital data'?

Which term is defined as 'Rounding sample values to the nearest available digital step'?

Which term is defined as 'A numbering system of 1s and 0s that computers use'?

Which term is defined as 'The frequency at which audio information is recorded per second'?

Which term is defined as 'Tiny squares that make up a digital image'?

Which term is defined as 'The amount of detail in an image, indicated by its number of pixels'?

Which term is defined as 'A reduction in detail or quality, often due to conversion or inadequate settings'?

In today's world, many forms of information start as _____ signals, such as the sound of music or the image your eyes see.

However, computers can only process _____ data, which means that information must go through a process called conversion.

This is done using an _____ to Digital Converter (ADC), which measures the analogue signal at regular intervals—a process known as _____

Each of these measurements, or samples, is then assigned a value by a method called _____

These samples are then encoded into _____ so they can be stored by the computer.

When sound is converted in this way, characteristics such as the _____ rate and bit depth affect the quality of the stored audio.

Digital images work in a similar way. The image is broken into tiny squares called _____, and its detail is determined by the image’s _____.

While storing data digitally offers benefits such as easier sharing and secure access, there are also disadvantages, like the risk of _____ quality and security threats.

Digital storage impacts data quality, security, and accessibility. Should everything be converted and stored digitally?

Fill in the blank: Some analogue formats like vinyl records offer a unique sound quality that can be ______ in digital conversion.

Fill in the blank: Digital storage makes information much easier to share and access quickly from ______, which is a huge benefit.

Fill in the blank: Highly sensitive information might be more vulnerable to ______ when stored digitally compared to physical, secure archives.

Fill in the blank: ______ data must be converted to digital for computers to use it.

Fill in the blank: Sound and images are sampled and stored using rates, bit depth, ______, and resolution.

Digital storage has many benefits, but also some drawbacks. True or False: Digital storage has only benefits and no drawbacks.

Understanding these concepts helps you make sense of the digital world around you! True or False: Understanding how data is converted and stored helps you make sense of the digital world.