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Worksheetsunit 1 -8 Grade quiz
Total questions: 20
Worksheet time: 17mins
(short for binary digit) is the smallest unit of data in a computer. A (short for binary digit) has a single binary value, either 0 or 1
Bit
Binary
Digit
Byte
a unit of data that is eight binary digits long. Often used to represent a character such as a letter, number, space
Bit
Byte
Binary
Digit
error that occurs when a computer approximates real numbers due to limitations in precision.
Overflow Error
Roundoff Error
Underflow Error
Syntax Error
occurs in a computer or similar device when a mathematical operation results in a number which is larger than what the device is capable of storing.
Overflow Error
Round Off Error
Syntax Error
Debugging Error
a minute area of illumination on a display screen, one of many from which an image is composed.
Pixel
Pixar
Dreamworks
Byte
Which of the following best describes how computing devices represent information?
A computer will either represent information as bits or bytes but not both
A computer represents data as a byte which is either a 0 or a 1.
A computer represents data as bits which is either a 0 or a 1.
A computer represents information as bits which contain 8 bytes.
How many numbers can be represented with an 8-bit binary system?
128
256
127
255
What is the minimum number of bits you would need to encode the 26 letters of the alphabet plus a space - a total of 27 characters?
2 bits
3 bits
5 bits
6 bits
Convert the decimal (base-10) number 129 to binary (base-2).
1000 0001
1100 0001
0110 0110
0001 1111
What is the 4-bit binary number for the decimal number 10?
0010
1010
0110
0101
Convert the binary (base-2) number 0011 0001 to decimal (base-10).
49
64
32
121
Your computer uses 4 bits to represent decimal numbers (0, 1, 2, 3 and so on) in binary. What is the SMALLEST number for which an overflow error occur?
14
15
16
17
Information (numbers, words, measurements, observations, etc) that is in a computer-readable form is called:
Bio-Data
Data
Abstraction
Number System
The number system we use in out everyday lives. It has 10 digits, 0-9.
Binary Number System
Decimal Number System
Hexadecimal Number System
Number System
American Standard Code for Information Interchange protocol for encoding text information as bits. 7-bit character set containing 128 characters.
Binary
Bit
ASCII
RGB Encoding
For black and white images 0 is for :
Pixel
RGB Encoding
white
black
How many bits are needed to represent 8 colors?
8 bits
24 bits
1 hex digit
3 bits
Consider the following three binary numbers:
01010
010000
1110
Which of the following lists the numbers in order from least to greatest?
010000
1110
01010
01010
1110
010000
01010
010000
1110
1110
01010
010000
Which of the following methods are used to represent negative numbers in binary :
2's compliment
A computer represents a number with 0 and 1 only no negative numbers
0 is for negative number and 2 's compliment
msb decides positive or negative number
and
2's compliment
Which of these binary (base-2) numbers is the smallest?
1000 0001
1100 0001
0110 0110
0001 1111
