1.4 Data Types, Structures, Algorithms

• Which boolean law is the following: A ∧ (BVC) ≡ (A∧B) V (A∧C)

  Distribution
• Purpose of bitwise manipulation


  allows you to isolate and extract, toggle and set bit values in a sequence
• State the purpose of a D-type flip-flop circuit

  store a value of 1 bit when a signal is given
• Describe the inputs and outputs used by a D-type flip-flop circuits

  Data input: clock input

  Output: Q, when clock input goes high, Q changes to D
• Similarity between ASCII and unicode

  Both use binary to represent characters

  Both are character sets

  The first 7/8 bits of Unicode is the same as ASCII
• Differences between ASCII and Unicode

  • ASCII has fewer characters 128/256, Unicode has more characters
  • ASCII is 7/8 bits whereas Unicode can be larger 16/32
  • Unicode can have variable sized characters
  • ASCII limited to characters whereas Unicode can represent other symbols
• Describe how half adders can be adapted to add together two 4-bit binary numbers

  Two half adders can be joined together with an OR gate to form full adder

  4 full adders can be used to add two four bit numbers