Q 1) Choose the correct options.
[10]
1. 010101 is_________________________.
12
21
2. The denary of 10111010 is
.
186
168
3. The denary of 11011011 is
219
120
none
_________________
215
none
4. The hexadecimal of 10101010 is ________________
AA
FF
2A
5. The hexadecimal of 10101111 is ________________
2F
AF
FF
Hexadecimal
Denary
6. Base-2 system is
Binary
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7. Base-10 system is ____________________________
Binary
Hexadecimal
Denary
8. Base-16 system is ______________________________
Binary
Hexadecimal
Denary
9. FF16 is _____________when we change it into binary system
11111111
11111000
none
10. F116 is _____________when we change it into binary system
11110001
11111010
none
Q 2) Write True or False
[10]
a) Base 2 system is Decimal / denary. ____F________
b) 11112 is 15 when we change it into Decimal / denary. ______T______
c) The Byte is the smallest unit of memory in a computer. ______T______
d) A binary digit is commonly referred to as a BIT; 8 bits are usually referred to as a BYTE____T___
e) The HEXADECIMAL SYSTEM is very closely related to the binary system ______T______
f)
0010 in binary is equal to 10 in hexadecimal and 10 in decimal number system. ___F_____
g) A in hexadecimal is equal to 11 in decimal number system. _______F___
h)
0000 in binary is equal to 0 in hexadecimal and 0 in decimal number system. ___T_______
i)
The Binary system is based on the number 10. ___F___
j)
Only the two values 0 and 1 can be used in Decimal system to represent each digit. ___F__
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Q3 Solve the following questions
a. Convert from Binary to Decimal.
[10]
Note: Show all the steps involve in conversion.
(a) 101011102 = (?)10
(b) 1101112 = (?)10
(c) 1111112 = (?)10
b. Convert from Decimal to Binary.
Note: Show all the steps involve in conversion.
(a) 6510 = (?)2
(b) 10010 = (?)2
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Q4
Complete the following problems for the other values.
Binary
Decimal
Hexadecimal
1. 101110102 _______________
_______________
2. 111100112 _______________
_______________
3. 101010102 _______________
_______________
4. 111111102 _______________
_______________
5. 110110112 _______________
_______________
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