Technology 1st Term

Technology 1st Term

1. UNIT 1

   • Problems in life
     • ALGORITHM (Set of ordered steps or instructions to do an activity or solve a problem)
       • To represent ALGORTIHM we need a FLOWCHART or FLOWDIAGRAM
         • SYMBOLS IN FLOWCHARTS
           • TERMINAL (Represents the beigining and the end of the development of an algorithms
           • PROCESS (Used to represent each of the actions needed to develop the algorithm.)
           • DECISION (Used when we need to decide between two or more options. It indicates the path to follow depending on the chosen option.)
           • FLOW LINE ( Tell how is the order in the algorithm)
           • INPUT OR OUTPUT INFORMATION (We used when information is needed or when we present data or results)
       • SECUENTIAL ALGORIHM (Here, the instructions are ordered in the same order they appeare)
       • SELECTIVES ALGORITHMS (Have a series of instructions that are executed depending on whether or not a condition is met.)
       • ITERATIVE OR REPETIVE ALGORITHMS ( Have a set of instructions that are repeated several times, they are contained in loops that tell the end and the beigining)
     • PROJECT APPROACH
       • Definition
         • The PROJECT APPROACH is a method of dealing with and resolving the practical problems affecting any society.
       • STAGES OF THE PROJECT APPROACH
         • 1. DETECT THE PROBLEM OR NEED
         • 2. INFORMATION AND RESEARACH
         • 3. SEARCH FOR POSSIBLE SOLUTIONS
         • 4. CHOOSE THE SOLUTION
         • 5. DESIGN
         • 6. PLAN AND PREPARE THE WORK
         • 7. BUILT THE PRODUCT
         • 9. PRESENTATION AND ASSESMENT
         • 8. CHECK THE RESULTS
         • 10. WRITE THE PROJECT REPORT

2. UNIT 4

   • DRAWINGS
     • SKETECH (Is a free hand drawing without details. They are draws without scales, only proportion)
     • DIAGRAM (Itś a drawing with more details than the sketch. Free hand. Objects with view. In proportion with actual size)
     • TECHNICAL DRAWINGS ( Drawings made with ruler. All the details. Scale and dimension
   • MEASUREMENT UNITS
   • STANDARISATION (Set of standar laws that regulate every element. In Spain the most important is AENOR)
   • DIMENSION A FIGURE (We indicate on the drawing representing it, the actual measurements needed to define it
     • TYPES
       • DIMENSION LINE (Used to indicate measurements and are drawn parallel to the line that they measurement)
       • AUXILIARY DIMENSION LINE( These lines protrude about 2 mm and are used to delimit the dimension lines accurately. They must be at least 8 mm from the edge of the figure.)
       • DIMENSION LINE END POINTS
       • NUMBERS (Has to be expressed in milimmiters)
     • DIMENSIONAL STANDARS
       • CHAIN
       • PARALLELS
   • VIEWS OF AN OBJECT
     • SECONDARY VIEWS (The not most important points of view)
       • RIGHT ELEVATION (A view only showing the right part of the figure)
       • REAR ELEVATION (Is the scale drawing that gives a back view of the set. )
       • BOTTOM ELEVATION ( Is the lower view of one drawing)
     • PRIMARY VIEWS (The most importants 3 points of view)
       • FRONT ELEVATION (It is the main primary view; it is always the most representative face of the object. We can indicate it with an arrow.
       • LEFT ELEVATION (It is the view from the left- or right-hand side of the figure.)
       • PLAN ELEVATION (It is the view of the figure from overhead.)
   • OBJECTS IN PERSPECTIVE
     • CAVALIER PERSPECTIVE (The X and Z axes are drawn with a 90° angle of separation. The Y axis is drawn at an angle of 135º to the other two.
     • ISOMETRIC PERSPECTIVE (We draw all three axes separated by the same angle: 120º.)
   • 3D PRINTERS (They use a technology called fused, filament, fabrication to print objects)
     • DESIGN ( It has to be in STL format))

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