Capability of computer memory
 
 

In other words: computer memory can only hold (contain) binary numbers !!!

Insightful question
 
 

I.e.: if computer memory can only hold (store) binary numbers, how do you store the letter 'A' ???

 

Insightful question
 
 

Answer: we use codes !!!

Example:   01000001 = 'A', 01000010 = 'B', 01000011 = 'C', etc

Code and encoding scheme
 

Example code: "kid's secret code"
 

Example code: code to represent Boolean values
 

Other codes used in the computer