Exam I Review

1. What are the primary two components of a computer?
2. What is the primary difference between main memory (RAM) and secondary memory?
3. What is the primary purpose of the hard drive?
4. What is a bit?
5. What is a byte?
6. Why do computers use a binary number system?
7. Convert the decimal number 121 to a binary number.
   Convert the binary number 11001011 to a decimal.
8. How many characters can be represented using 1 byte of storage?
   How many characters could be represented using 2 bytes of storage?
   Justify your answers with a short calculation.
9. What is an IDE and what are it primary three functions?
10. Compare and contrast procedural, object-oriented and event-driven programming.
11. Create a one line example of C++ code to illustrate how the following items are used
    • cout
    • cin
    • variable declaration
    • assignment statements
12. Label each of the operators in the expression below in the order of execution.
    2 + 3*4² + (3-7)
13. What is a variable?
14. List and describe the four properties of a variable.
15. Be able to recognize valid C++ identifiers (variable names).
    Example:  which of the following are valid identifiers in C++.
    
    • cat
    • side1
    • 2cars
    • twoCars
    • freight_train
    • double
    • house mouse
16. List the four primitive data types in C++ and give typical storage requirements for members of each data type.
17. What is ASCII?