Unit 3 - Units & Data Representation
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How many bits form a byte?
8 bits form a byte.
How many bytes form a kilobyte?
1000 bytes form 1 kilobyte.
How many combinations can 4 bits (nibble) produce?
4 bits (a nibble) can produce 16 different combinations.
How many combinations can 8 bits (1 byte) produce?
8 bits (1 byte) can produce 256 different combinations.
How many base numbers are there in denary?
Denary has a base 10 number system.
How many base numbers are there in hexadecimal?
Hexadecimal is a base 16 number system (0-9 and then A-F).
How many base numbers are there in binary?
Binary has a base 2 number system (0 and 1).
How do you calculate the largest number that can be held in a certain amount of bits?
To find the largest number of bits, you do 2^n, where n is the number of bits available.
Which numbers are stored in one bit?
0 and 1 are numbers that are stored in one bit.
How many bits are there in a nibble?
There are 4 bits in a nibble.
How many bits are there in a byte?
There are 8 bits in a byte.
What are the units after a kilobyte?
The units after a kilobyte are megabyte (MB), gigabyte (GB), terabyte (TB), and petabyte (PB).
What is zero as an 8 bit binary number?
0000 0000 is zero represented as an 8 bit binary number.
What is 255 in binary?
1111 1111 is 255 represented in binary.
What is 39 as an 8 bit number?
0010 0111 is 39 represented as an 8 bit binary number. (32+4+2+1)
How can you tell if a binary number is odd or even?
Even numbers will not have a 1 at the end, whereas odd numbers will.
Convert “F” from hexadecimal to denary.
F in hexadecimal is 15 in denary.
Convert 10 from denary to hexadecimal.
10 in denary is A in hexadecimal.
What is 27 (hex) in denary?
27 (hex) in denary is 39. (2x16+7)
What is 3B in binary? (workings needed)
3B is equal to 001 1011 (split the hex characters into nibbles)
What is C (hex) in denary?
C in hexadecimal is 12 in denary.
What is 2B (hex) in denary?
2B (hexadecimal) is 43 in denary. (16x2 + 1x11 = 32+11 =43)
What is 1010 0011 in hexadecimal?
1010 0011 (binary) is A3 in hexadecimal.
Perform a left shift on the binary number 0110 1011 (107).
0110 1011 (107) when shifted left is 1101 0110 (214.) A left shift DOUBLES a number.