CodeHS - Unit 5 - Digital Information

Front

What is the number base of the binary number system?

Back

2

Front

What is the place value of the 1 in the binary number 100₂?

Back

4s place

Front

What is the binary representation of 13₁₀?

Back

1101₂

Front

Nora is designing a simple lock that uses 2 switches, each of which can be either ON or OFF. How many possible combinations can Nora create with these 2 switches?

Back

4

Front

How many bits are needed to encode each character using ASCII?

Back

8 bits

Front

What is a pixel?

Back

A single tiny dot, or square, of color in a digital image.

Front

Convert the hexadecimal value 9F₁₆ to binary.

Back

1001 1111₂

Front

What is the decimal value of the hexadecimal number C₁₆?

Back

12₁₀

Front

Which 3 color channels can be adjusted in the RGB color scheme to transform the look of a pixel?

Back

Red, Green, and Blue

Front

What is the range of values (in decimal) that each color channel (red, green, blue) can have in a digital photo editing challenge?

Back

0₁₀ - 255₁₀