Study Guide for Test 1 (11 Jul 2011)

* There will be conversions of decimal numbers into binary, 
  octal, and hexadecimal and vice versa.

* There will be conversions of negative numbers into 8-bit 
  2's complement numbers. 

* You will create truth tables for Boolean expressions that will
  involve Boolean operators not, and, or, xor. The Boolean expressions
  will involve just two Boolean variables (let us say A and B) and your
  truth tables will have all possible permutations of A and B.

* You will define variables, i.e. write meaningful variable names and
  their values.

* You will evaluate expressions given certain input values.

* You will write Boolean expressions that evaluate to True
  given a set of conditions.

* There will be questions on conditionals. You will either write 
  conditional statements given a set of criteria or you will
  be given a conditional statements and a set of input values and
  you should be able to state what the result or output of those
  conditionals will be.

* You are responsible for these built-in functions:
  - abs (x)
  - chr (i)
  - cmp (x, y)
  - float (x)
  - int (x)
  - long (x)
  - ord (c)
  - pow (x, y)
  - range ([start], stop [, step])
  - str (object)

* You will write the body of functions given a set of criteria.
  The functions will be similar in difficulty to the ones you did in
  Tutorial Exercises 2 and 3.