Topic 5.2 - Number Bases

Question 1

What is the number base for a decimal number?

Answer 1

Base 10

Question 2

What is the number base for a binary number?

Answer 2

Base 2

Question 3

What is the number base for a hexidecimal number?

Answer 3

Base 16

Question 4

How do you convert between decimal and binary?

Answer 4

minus 128 from number, if possible, then write 1, if not possible then write 0

repeat until you have reached 0

Question 5

How do you convert between decimal and hex?

Answer 5

Convert to binary then convert to hex

Question 6

How do you convert between binary and hex?

Answer 6

value of 4 least significant bits is letter/number on the right

value of 4 most significant bits is the letter/number on the left

e.g. 1010 1101 in hex would be
AD

Question 7

Why is hex used as a shorthand for binary?

Answer 7

Since it is a lot easier to comprehend and is a lot easier to represent large values.
It also uses much less memory space.