Barrons Book

• Reading

  • On pages 129 to 148

  • This part is one of the most important sections of the review.  It covers a lot of material we haven't really touched and is popular on the exam.  Take your time and make sure you understand everything!
    
    

• Questions

  • On pages 149 to 166

  • Answer a selection of questions without notes.  There are a lot in here, if you're pressed for time you can jump around a bit.  For example, you may want to do a few number system conversions but you don't need to do all 18 questions on that topic.

  • Go back and check your answers 

Crash Course #4 - Binary Numbers and Letters with Binary

• Define Binary

• Define Bit

• Convert a binary value to decimal

• How many colors did an 8 bit game have access to?

• Define Byte

• What is the first bit in a binary number usually used to represent?

• Define Floating Point Numbers

• Define ASCII

• What do the values 65 and 97 represent in ASCII?

• How many values are on the extended ASCII table?

• What does mojibake mean? 

Crash Course #21 - Compression

•  What is the purpose of compression?

• What is run-length encoding?

• What is the difference between lossy and lossless compression?

• What is a Huffman Tree, and how does it work?

• What is perceptual coding, and how does it help forms of lossy compression?

Tom Scott - Why Snow and Confetti Ruin Video Quality

• To stream an uncompressed HD video, how many average American video broadband connections would you need?

• How does interframe compression work?

Numberphile - 15 and Hexadecimal

• Hexadecimal is also known as base _____.

• Why is hexadecimal useful for programmers who want to understand memory addresses in a computer?

  • Advantages over binary?

  • Advantages over decimal?

Number System Conversions

• Read the text tutorial and/or watch the video tutorial and then practice.

  • Text Tutorial - Converting Numbers

• Master how to convert between Decimal and each of the three number systems. Your quiz will ask you to do a few conversions to test your ability.  If you don’t love these sources, feel free to use any others you find online!

• Decimal <-----> Binary Conversion  (both ways)

• Decimal <-----> Octal Conversion  (both ways)

• Decimal <-----> Hexadecimal Conversion  (both ways)

Code.org - Images, Pixels, and RGB

• What is a pixel and what is it short for?

• What is resolution?

• What is density?

• What is RGB and how do these values work?