CSP U1 Digital Information

How many values can a bit store?

• two values at a time

• one of two values

• one of ten values

• ten values at a time

In the settings menu, what is the minimum number of bits needed to represent the options?

• 2

• 4

• 1

• 3

There are 32 bits in 4 bytes

• True

• False

A computer uses 4 bits to represent numbers, which of the following would result in overflow?

• 1 + 15

• 2 x 4

• 8 x 3

• 12 + 3

Which of the following can be represented using a byte with 2 bits for the fractional part?

• 0.5 + 0.1

• 16.5 x 3

• 1.5 + 7.25

• 1.2 + 0.05

How ASCII many characters are encoded in 0101101000110001

• 1

• 2

• 3

• none

This could represent?

• english characters

• characters in any language

• an image

• sound

Which of these is the best description of analog data?

• Data that varies between positive and negative values.

• Data that changes smoothly over time.

• Data that changes in discrete intervals over time.

• Data that has been sampled by a computer.