WorksheetsG8 - Data Representation
Total questions: 20
Worksheet time: 20mins
How many digits are in Binary system?
One
Two
Four
Eight
The brain of any computer is the micro-processor (or the micro-controller) that contain million of "switches" that can be either switched-ON or switched-OFF. That's why computers can only talk in...
Hexadecimal
Binary
Base-10
Hanzi
The DECIMAL number system (also called DENARY) consists of the following 10 symbols
1, 2, 3, 4, 5, 6, 7, 8, 9, 10
1, 2, 3, 4, 5, A, B, C, D, E
1, 2, 3, 4, 5, 6, 7, 8, 9, 0
A, B, C, D, E, F, G, H, I, J
The BINARY number system consists of the following symbols
0, 1, 2, 3, 4, 5, 6, 7, 8, 9
0, 1
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F
A, B, C, D, E, F
The BINARY number system is also called
BASE-1
BASE-2
BASE-10
BASE-16
The DECIMAL number system is also called
BASE-1
BASE-2
BASE-10
BASE-16
The HEXADECIMAL number system is called BASE-16 because it consists of
2 symbols, which are 1 and 6
6 symbols, which are 1, 2, 3, 4, 5, 6
10 symbols, which are 0, 1, 2, 3, 4, A, B, C, D, E
16 symbols, which are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F
Each "0" or "1" in a binary number is called a BIT. The following is an example of 8-bit binary number:
12345678
08008008
00100111
0100111001100101
Computer's memory (RAM) consists of switches that can store a lot of bits that make up of information. 2-BIT BINARY can only represent 4 different information:
00, 11, 01 and 10
000, 001, 010 and 100
0000, 0001, 1000, 1111
0001, 0010, 0100, 1000
Computer's memory is measured in BYTE unit where one byte consists of 8 bits. The biggest (decimal) number that can be represented by 8-bit binary is
4 which is 00000100
8 which is 00001000
128 which is 10000000
Bigger than 128 which is 11111111
Convert the binary 00100000 into decimal number
128
64
32
8
Convert the binary number 00001000 into decimal number
64
32
16
8
Convert the binary number 1010 into decimal number
8
6
10
2
Convert the binary number 1110 into decimal number
12
14
10
16
Convert the binary number 001001 into decimal number
5
7
9
13
Convert the binary number 100001 into decimal number
11
22
33
44
Convert the 4-bit binary number 0101 into decimal number
1
3
5
8
The decimal number 30 can be represented by the following binary number
11111
11110
11101
11010
The decimal number 9 can be represented by the following binary number
10011
1001
10001
101
The biggest decimal number that can be represented by 4-bit binary is
3
7
15
20
