Program Flow

• IF Statements allow you to check if a condition is true or false.
• SWITCH statements check the value of a variable . They are neater.
• DO UNTIL loop is at the END of look. WHILE loop is at start of loop.
• NOT Gate: Does the opposite, when you input 1 it outputs 0 (vice versa).

  A) NOT gate

  
• AND Gate: If you input: 0 and 0 = output 0. If you input : 1 and 0 input = 0. Need 2 ones to be 1.

  A) AND gate

  
• OR Gate: only need one 1 to be 1. input: 1 and 0 = 1.

  A) OR gate