Electronics

Electronics

1. Electronics is the branch in sciences which studies electricity,he physics, engineering, technology and applications that deal with the emission, flow and control of electronsin a vacuum or in special materials

   • Vacuum
     • Vacuum tubes
       • A glass tube containing electrodes sealed in a vacuum
     • Vacuum-tube Triode
       • The adiotion of the grid gave it three electrodes instead of two
     • Vacuum-tube Diode
       • A simple vacuum tube consisting of two electrodes: a negative charge filament and a positively charge plate
     • Semiconductors
       • Semiconductors
         • Is a material that is neither a good conductor nor a good insulator
       • Semiconductors Diodes
         • Semiconductors devices that, like vacuum-tubes diodes, allow current to pass in only one direction
       • Transistor
         • A semiconductor device that can perform the same funtions as a vacumm-tube triode such as acting as a "switch" and amplifying weak signals
         • Types
           • Juntion Transitor
           • The point-contact mansitor
           • Field effect Transitor (FET)
       • Circuits
         • Such device, consisting of a single piece of semiconductor containing an entire electronic circuit
         • Electronic Computers
           • A device that process information using electrtonic circuits
           • Data
             • Pieces of information, in a short time, computers have drastically increased man's capacity to process information
             • Analog Data
               • Can have any possible value withiin a specified range
               • Digital Data
                 • Can have only certain values within the range
                 • Data Unit
                   • Byte
           • Hardware
             • MOst of the computer's hardware can be divided into three
               • Processing
                 • Memory
                   • Input and output
             • CPU
               • Central processing unit
                 • The CPU controls all the other systems of the computer, performs calculation, and executes
               • RAM
                 • Random-access memory
                   • Its name refers to the fact that the computer does not have to search through its entire RAM