Digital Data-Bits & Bytes & Files Flashcards
1
Q
What is a bit
A
(b) Binary digit - 0 or 1 value
2
Q
What is a number system?
A
Method of representing or encoding numbers
3
Q
Different kinds of number systems
A
- Decimal (base 10)
- Binary (base 2)
- Hexadecimal (base 16)
4
Q
What is a byte?
A
(B) grouping of 8 bits
Considered the basic unit of information
5
Q
ASCII
A
American Standard Code for Information Interchange
6
Q
What is ASCII?
A
Character-encoded scheme based on the ordering of the English alphabet
7
Q
What is a String?
A
Sequence of bytes
Represents ASCII characters
8
Q
What is a file format?
A
- Collection of binary data
- Format determines the interpretation of bit patterns
9
Q
What is a file extension?
A
Your computer will pick a program to to open & interpret data
ex. image.jpg (.jpg is the file extension)
10
Q
What is file header?
A
First few bytes of the file, which the program looks at to determine the actual file type
