Binary Basics
What number system do computers use to represent data?
Binary
What is the value of the rightmost binary place?
1s place.
Convert the decimal number 2 to binary
0010
Convert binary 0001 to decimal
1
What is 0 + 1 in binary?
1
In binary, what does the digit 1 represent?
ON
What comes after the 1s place in binary?
2s place
Convert the decimal number 5 to binary
0101
Convert binary 0011 to decimal
3
What is 1 + 1 in binary?
0 carry 1
Why can computers only use 0s and 1s?
They use switches that are ON or OFF.
What are the place values in a 4-bit binary number?
8, 4, 2, 1
Convert 7 to binary
0111
Convert binary 0100 to decimal
4
Add binary: 0101 + 0001.
0110
What base is the binary number system?
Base 2.
In the binary number 0101, which place contributes a value of 4?
The second place from the left.
Convert 10 to binary
1010
Convert binary 1010 to decimal
10
Add binary: 0011 + 0011.
0110
What do we call the smallest unit of data that is a 0 or 1?
A bit
In binary, each place value doubles. What comes after the 8s place?
16s place
Convert 15 to binary
1111
Convert binary 1101 to decimal
13
Add binary: 1111 + 0001
0000 with overflow