GCSE Design and Technology-mapping

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					GCSE Design and Technology (Electric Products) – Mapping of e-learning
                               units.

   Area of Study      Learning unit                 Description
All areas          Circuit Drawing    The circuit drawing tool is a tool
                   Tool               that will allow you to draw
                                      electronic circuit diagrams quickly.

                                      It also includes a text entry function
                                      to allow you to label diagrams and
                                      write explanations to accompany
                                      the diagrams.

                                      This allows you to produce pages
                                      containing circuit diagrams for your
                                      notes and project work.
All areas          Electricity        The electricity exploration tool is a
                   exploration tool   tool that will allow you to discover
                                      all of the basic principles of
                                      electricity.

                                      It consists of an interactive circuit
                                      builder that allows you to build basic
                                      circuits, and a multimeter that will
                                      measure voltages, currents and
                                      resistances in the circuit.

                                      Comprehensive help tutorials
                                      explain how to use the tool, and
                                      exploration tutorials help you to
                                      discover current voltage, resistance
                                      and Ohm's law. Full explanations
                                      are also included covering:

                                            electric charge
                                            current
                                            voltage
                                            resistance
                                            Ohm's law
                                            power and energy.


All areas          Electronics        The electronics dictionary is an
                   dictionary         interactive reference tool.

                                      It allows you to find simplified
                                      definitions and explanations of
                                      common words used in electronics.

                                      The tool has four main areas. These
                                      are:

                                      1. The search box. This allows
                                         you to enter a word or the first
                                         letter(s) of a word. It then
                                  jumps to the word or words
                                  beginning with the entered
                                  letter(s).
                               2. The words list. This is a
                                  scrollable list of all the words in
                                  the dictionary.
                               3. The definition box. This
                                  displays the currently selected
                                  word and definition or
                                  explanation.
                               4. Associated words. This lists
                                  other words in the glossary
                                  associated with the currently
                                  displayed word.


All areas   Electronics        The calculation and reference tool is
            reference and      a tool that will allow you to access
            calculation tool   all of the reference data that you
                               may require when performing
                               electronics calculations.

                               It also includes a scientific calculator
                               and tools to assist you when
                               performing calculations.

                               These are:

                                     a units converter
                                     a re-arrange formula tool.

All areas   Components         The components database is an
            database           interactive reference tool.

                               It allows you to see explanations and
                               images of common electronic
                               components.

                               The images include photographs, circuit
                               symbols and other media such as pin-
                               outs. The tool has three main areas.
                               These are:

                                  1. The search box. This allows
                                     you to enter a component or the
                                     first letter(s) of a component. It
                                     then jumps to the component or
                                     components beginning with the
                                     entered letter(s).
                                  2. The components list. This is a
                                     scrollable list of components in
                                     the database.
                                  3. The display box. This displays
                                     the currently selected
                                     component, a definition or
                                     explanation, and images.
All areas    Components self       This is a self check unit and allows the
             check                 learner to check their knowledge of:

                                          resistors and variable resistors
                                          capacitors, inductors and
                                           transformers
                                          semiconductors, diodes and
                                           transistors
                                          switches and sensors
                                          output components.



All areas    Testing               This unit covers:

                                          testing equipment and how to
                                           use it
                                          how to test a circuit design
                                          how to fault find a circuit
                                          how to measure values and test
                                           components.



Mechanical   Switches              This unit covers:
switches
                                          the different switch
                                           operations and how they
                                           work
                                          switch symbols
                                          types of switches, their
                                           operations and how they
                                           work.

Resistors    Resistors basics      This unit covers:

                                          resistors – what they are and
                                           why they are used
                                          types of resistors
                                          resistor units
                                          tolerance of resistors
                                          preferred values of resistors.

             The resistor colour   This unit covers:
             code
                                          how a resistor is marked
                                           with the colour code
                                          how the colour code works
                                          how to convert between
                                           colour codes and resistor
                                           values.

             Variable resistors    This unit covers:

                                          what a variable resistor is
                                          how a variable resistor works
                                          how the resistance changes
                                           in a variable resistor
                                          types of variable resistor.
Capacitors     Capacitors       This unit covers:

                                       capacitors - what they are
                                        and how they work
                                       capacitor units
                                       capacitor tolerance and
                                        ratings
                                       types of capacitors.


Diodes         Diodes           This unit covers:

                                       diodes - what they are and
                                        the p-n junction
                                       how diodes work
                                       diode characteristics and
                                        ratings
                                       types of diodes.


Field effect   Field effect     This unit covers:
transistors    transistors
                                       field effect transistors - what
                                        they are, types and
                                        construction
                                       how JUGFETs operate
                                       how MOSFETs operate.


Thyristors     Semiconductors   This unit covers:

                                       the structure of atoms, valence
                                        band and bonding of atoms
                                       conducting, insulating and
                                        semiconductor materials
                                       doping of semiconductors
                                       different semiconductor devices.



Operational    Operational      This unit covers:
amplifiers     amplifiers
                                       op-amps - what they are and
                                        how they work
                                       the 741 op-amp
                                       different op-amp circuits and
                                        their operation.


Logic          Logic circuit    This is an interactive design tool
               design tool      That allows the learner to draw and
                                stimulate logic circuits using the
                                basic logic gates. It also contains
                                help tutorials and tutorials for each
                                logic gate.
Logic gates self   This unit allows the learner to check
check              their knowledge on:

                         logic gate symbols
                         logic functions
                         logic gate recognition
                         truth tables.

AND gates          This unit covers:

                         the AND function
                         how 2-input and 3-input AND
                          gates operate
                         the circuit symbols for 2-
                          input and 3-input AND gates
                         the truth tables for 2-input
                          and 3-input AND gates
                         different AND gate integrated
                          circuits (ICs).
OR gates
                   This unit covers:

                         the OR function
                         how 2-input and 3-input OR
                          gates operate
                         the circuit symbols for 2-
                          input and 3-input OR gates
                         the truth tables for 2-input
                          and 3-input OR gates
                         different OR gate integrated
                          circuits (ICs).

NAND gates         This unit covers:

                         the NAND function
                         how 2-input and 2-input
                          NAND gates operate
                         the circuit symbols for 2-
                          input and 3-input NAND
                          gates
                         the truth tables for 2-input
                          and 3-input NAND gates
                         different NAND gate
                          integrated circuits (ICs).

NOR gates          This unit covers:

                         the NOR function
                         how 2-input and 2-input NOR
                          gates operate
                         the circuit symbols for 2-
                          input and 3-input NOR gates
                         the truth tables for 2-input
                          and 3-input NOR gates
                                           different NAND gate
                                            integrated circuits (ICs).
               NOT gates
                                    This unit covers:

                                           the NOT function

                                           how NOT gates operate

                                           the circuit symbol and truth
                                            table for a NOT gate

                                           how NAND and NOR gates
                                            can be used to replicate the
                                            NOT function

                                           different NOT gate integrated
                                            circuits (ICs).
               XOR gates
                                    This unit covers:

                                           the XOR function
                                           how XOR and XNOR gates
                                            operate
                                           the circuit symbols and truth
                                            tables for XOR and XNOR gates
                                           different XOR and XNOR gate
                                            integrated circuits (ICs).
               Universal gates
                                    This unit covers:

                                           what universal gates are
                                           NAND and NOR gate functions
                                           how to create other logic
                                            functions from NAND gates
                                           how to create other logic
                                            functions from NOR gates.

               Combinational        This unit covers:
               logic
                                           combinational logic
                                           Boolean algebra and Boolean
                                            expressions
                                           producing a Karnaugh map
                                           minimising a circuit using
                                            Boolean algebra and Karnaugh
                                            mapping.



Construction   Circuit design
techniques     units shown at the
               top of the table.
Moonstable     Timer circuits       This unit covers:
timers
                                           the types of timer circuits
                                           monostable and astable
                                                  waveforms and calculations
                                                 how to create a time delay
                                                 the 555 timer
                                                 Other timer circuits.



Interface devices   Transistors           This unit covers:

                                                 transistors - what they are and
                                                  how they are constructed
                                                 how transistors work
                                                 how to protect and test
                                                  transistors
                                                 types of transistor circuit
                                                  configurations.



Output devices      Output                This unit covers:
                    components
                                                 the different output
                                                  components, their operation and
                                                  how they work
                                                 output component symbols and
                                                  what they look like
                                                 how to connect output
                                                  components correctly.




Other units that may be useful in the teaching of this subject

                         Learning unit                Description
                    AC                    This unit covers:


                                                 the differences between direct
                                                  current and alternating current
                                                 types of AC waveforms
                                                 voltage and current waveforms
                                                 phasors and phase angles.



                    Digital electronics   This unit covers:


                                                 digital and analogue electronics
                                                  and the differences between
                                                  them
                                                 logic levels, gates and truth
                                                  tables
                                                 integrated circuits and families
                                                  of digital devices
                                                 rules for using digital devices
                                                  and their characteristics.
Sensors               This unit covers:

                            the different sensor components
                             and their operation
                            sensor symbols and what they
                             look like
                            different uses for sensors
                            basic sensor circuits.



Series and parallel   This unit covers:
capacitance
                            the difference between series
                             and parallel circuits and how to
                             identify them
                            how capacitance is affected in
                             series and parallel circuits
                            how to calculate the total
                             capacitance in series and
                             parallel circuits.




Series and parallel   This unit covers:
resistance
                            the difference between series
                             and parallel circuits and how to
                             identify them
                            how to calculate the total
                             resistance in series and parallel
                             circuits
                            voltage drops in series and
                             parallel circuits
                            current flow in series and
                             parallel circuits
                            series/parallel combination
                             circuits.



Voltage and           This unit covers:
current dividers
                            Kirchoff’s voltage and current
                             laws
                            how a parallel circuit operates
                             as a current divider
                            how a series circuit operates as
                             a voltage divider
                            basic voltage divider circuits
                            voltage divider sensor circuits.

				
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