Unit 4 Lab 4
Data Representation and Compression
In this lab, you will explore how different kinds of information are represented.
Bits
Vocabulary
Click each word to view the definition.
Byte
A byte is eights bits.
Word
A word is the number of wires that connect the processor to the memory As of 2017, Words are 32 or 64 bits.
Self-Check
Unit 4 Lab 4: Bits
Binary Sequences
Vocabulary
Click each word to view the definition.
Binary Sequence
A binary sequence (also called a bitstream) is a sting of ones and zeros.
Self-Check
Unit 4 Lab 4: Binary Sequences
If There's Time
Representing Whole Numbers
Vocabulary
Click each word to view the definition.
Width
Width is the number of bits that a CPU processes at a time.
Word
Word is a binary sequence of that many bits
Click to access the page.
Floating Point
Vocabulary
Click each word to view the definition.
Floating Point
Scientific notation (such as 2,350,000 = 2.35 × 106) uses powers of ten to represent very large or very small values. Floating point is the same idea but with powers of two.
Click to access the page.
Binary Representation
Vocabulary
Click each word to view the definition.
Bit
The word "bit" is an abbreviation for binary digit.
Self-Check
Unit 4 Lab 4: Binary Representation
Data Compression
Vocabulary
Click each word to view the definition.
Lossless Compression
Lossless data compression algorithms (such as PNG) are reversible (there is no loss in quality); you can reconstruct the original data.
Lossy Compression
Lossy data compression algorithms are not fully reversible; you can reconstruct only an approximation of the original data.
Self-Check
Unit 4 Lab 4: Data Compression