WorksheetsBinary & ASCII Review
Total questions: 16
Worksheet time: 13mins
ASCII is a character-encoding scheme that uses a numeric value to represent each character. For example, the uppercase letter “G” is represented by the decimal (base 10) value 71. A partial list of characters and their corresponding ASCII values are shown in the table above.
ASCII characters can also be represented by binary numbers. According to ASCII character encoding, which of the following letters is represented by the binary (base 2) number 1010100?
N
P
T
W
Which of the following decimal (base-10) values is equivalent to the binary (base-2) value 101001?
22
37
41
82
The above procedure check is called in a program after each time a True or False question is answered. If the user types in True True False True as their answers for four questions on a quiz, what should their overall score be?
25%
50%
75%
100%
ASCII is a character-encoding scheme that uses 7 bits (8 bits if you are using the extended ASCII table) to represent each character. The decimal (base 10) values 65 through 90 represent the capital letters A through Z, as shown in the table above.
Which ASCII character is represented by the binary (base 2) number 1000001?
A
B
C
D
How many bytes long is the following sequence of bits?
1 0 1 1 1 1 1 1 1 1 0 1 0 0 0 1 1 1 1 1 1 1 0 1
12
3
4
24
Which of the following is a single byte of digital information?
Each choice is expressed in binary.
1101010
101011010111
0
10101101
Convert this binary code to decimal: 00101110
52
50
46
34
Convert 1 1 1 1 1 1 1 1 to decimal
How many bits are in a single byte?
4
8
12
16
What is the highest number you can count to using only three bits? (your answer should be a single number)
(a)
In the decimal system, the place values (starting from the right) go: 1, 10, 100, 1000, and so on. In binary, how do the place values (starting from the right) go?
0, 2, 4, 8, etc.
1, 2, 4, 8, etc.
0, 1, 2, 4, etc.
1, 4, 16, 32, etc.
What is a pixel?
A tiny square of colour
A tiny circle of colour
A tiny piece of music
A tiny triangle of colour.
How do we represent more colours other than black and white in our images?
We use more bits per pixel
We stop using binary
We just type the colour in that we want
We just type the colour in that we want
