Review retrieval 3 º ESO

Posted by on Feb 1, 2018 in Technology | 0 comments

Types of levers: First grade: R, PA, F. Second grade: PA, R, F. Third grade: PA, F, R. Worm, use transmitting rotary motion between two shafts that form an angle of 90 degrees (always input and output gear). Description: Has a single tooth-shaped wire thread. The gear is a toothed wheel. Each time a turn just a cog goes with it. Features: The relations of transmission of motion through right angles, high cost and mov. without noise. pinion-rack system: This is a straight-tooth pinion, a rack engarnazado. Read More

tecno

Posted by on Jan 12, 2018 in Technology | 0 comments

MOTHERBOARD : known as the mainboard, system board etc is the main printed circuit board found in computers and other systems. It holds and allows communication between many of the crucial electronic components of a system, such as the central processing unit and memory, and provides connectors for other peripherals.
MICROPROCESSOR: is a computer processor that incorporates the functions of a computer’s central processing unit  on a single integrated circuit, The microprocessor is a multipurpose,
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t

Posted by on Sep 26, 2017 in Technology | 0 comments

A structure is something that supports an object or a load.

A structure must:

  • be strong enough to support its own weight and any load that is put on it..
  • be stable (not topple over easily when a force acts on it)
  • resist without losing moreshapethan expected.

There are three types of structures:

Mass structures (estructuras masivas)
Frame structures (estructuras de ensambladas: trianguladas, entramadas y colgantes)
Shell structures (estructuras de carcasa o laminares)

Mass structures

Mass structures are
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