20 flashcards · Shared on 19 August 2026 by AtomAI Library
Flip each card to check yourself.
What is a bit?
A single binary digit with a value of 0 or 1
What is a bit?
A single binary digit with a value of 0 or 1
How many bits are in one byte?
8
What are the place values in the binary number 1101, from left to right?
8, 4, 2, 1
What is the decimal value of the binary number 101101?
45
Which binary number represents decimal 26?
11010
What is the result of the binary addition 1011 + 0110?
10001
What is hexadecimal?
A base-16 number system using digits 0 to 9 and letters A to F
What is the hexadecimal equivalent of the binary number 11010110?
D6
Which hexadecimal value represents decimal 58?
3A
Why is hexadecimal commonly used to display binary data?
Each hexadecimal digit represents exactly four bits
What range can be represented by an unsigned 8-bit binary number?
0 to 255
What is binary overflow?
A result that requires more bits than the available representation provides
In 8-bit two's complement, which binary pattern represents -1?
11111111
What range can be represented using 8-bit two's complement?
-128 to 127
What does a character encoding specify?
How characters are represented using numeric values
Which statement correctly distinguishes Unicode from ASCII?
Unicode provides code points for characters from many writing systems, while ASCII contains a much smaller character set
What does the colour depth of a bitmap image determine?
The number of bits used to represent each pixel's colour
An uncompressed image is 100 pixels wide, 50 pixels high and has a colour depth of 24 bits. What is its data size, excluding metadata?
15,000 bytes
What does the sample rate of digital audio measure?
The number of sound samples taken per second
How does lossless compression differ from lossy compression?
Lossless compression allows the original data to be reconstructed exactly