Understanding Analog and Digital Data

Consider a computer that uses 5 bits to represent integers, using 1 bit for the sign and 4 bits for the actual value.

Which of the following operations would result in integer overflow?

• 8 x 2

• 7 +1

• 6+9

• 12 +3

• 2 x 4

VSCII is a character encoding scheme developed in the 1990s in order to encode text written in Vietnamese. VSCII uses one byte to encode each character.

This binary data is a VSCII encoding of a single Vietnamese word:

1010111010111000

How many characters are encoded in that binary data?

• 1

• 2

• 5

• 4

Which of these data sources is analog?

• A list of teams in a soccer tournament

• A swimmer’s position in a pool as the swim from one end to the other

• The number of players sitting on the bench

• The final score of ten basketball games.

Which of these data sources is analog?

• The number of reported sightings of a bird in a specific zip code.

• The altitude of the bird in the sky

• A list of birds that are commonly seen in the park

• The average length of the song sung by the bird

What is true about the process of converting the concert's audio waves into a digital recording?

• In order for the digital recording to be a more accurate representation of the concert, the recording should use fewer bits to represent each sample.

• As long as the musician purchases a computer with enough storage capacity, the digital recording can record every detail of the original analog data.

• To capture the most amount of details in the digital recording of the concert, the recording process must take samples at the largest interval possible.

• If the recording equipment uses a very small sampling interval, the digital recording will be a very good representation but will not contain every detail.