Binary Conversion Flashcards
(24 cards)
What are the three types of values used to communicate information in computers?
Decimal values, binary values, and characters
What is the binary system’s significance in computer communication?
Shapes the rules and conventions of how computers interact
What is represented by 8 bits in binary?
Decimal numbers
How many decimal numbers can be represented with 1 byte?
256
What is the value of the 1st (leftmost) bit in a byte?
128
What is the value of the 2nd bit in a byte?
64
What is the value of the 3rd bit in a byte?
32
What is the value of the 4th bit in a byte?
16
What is the value of the 5th bit in a byte?
8
What is the value of the 6th bit in a byte?
4
What is the value of the 7th bit in a byte?
2
What is the value of the 8th bit in a byte?
1
Fill in the blank: To convert binary to decimal, you fill the ‘Off or on’ row with the values of each bit in the byte, then sum the decimal values of columns with a 1 in the ‘Off or on’ row to get the _______.
decimal value
How do you convert a decimal value to a binary value using the table?
Fill the ‘Off or on’ row with 0s and 1s so that the sum of the decimal values of columns with a 1 equals the decimal value
What is the binary representation of the decimal value 87?
01010111
What is the decimal value of the binary number 10011101?
157
What character encoding standard was the first to be used?
ASCII
How many characters can ASCII represent?
256
What is the binary value for the character ‘a’ in ASCII?
01100001
What is the decimal value for the character ‘b’ in ASCII?
98
What does UTF-8 allow that ASCII does not?
Represents characters with more than one byte
True or False: Computers communicate using decimal values.
False
Use the binary conversion table to convert the binary value 00010011 into a decimal value. What is the result?
19
Use the binary conversion table to convert the decimal value 179 into a binary value. What is the result?
10110011
