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THE DESIGN AND IMPLEMENTATION OF ELECTRONICS SEQUENTIAL SIGN PATTER DISPLAY

 

ABSTRACT

          This design implementation of this electronic sequential sign post display employs the use of some specialized components. This section of the project introduces the reader to the different section of the project and the components that makes them up.

          Emphasis are laid on describing the behaviour and operational system of the components as related to the project modeling, analysis, design and implementation of an ELECTRONIC SIGN POST, which is made up of a power supply, a shift register, a counter, multivibrator (555CMOSI.C) transistor, relay, resistors of different ohmic values capacitors, sensitive mic (for the switching system) and 220V AC lamp.

 

 

A SIMPLE DIODE

CAPACITOR

          In it’s simple form, it is just a device or component which is used to store electronic charge. It is known by its charging and discharging principle. When it is connected current will flow into the capacitor until it is full then it discharges gradually.

          The two types known are:

1.       Fixed capacitor

2.       Variable capacitor under fixed we have

a)       Electrolytic capacitor (polarized)

b)      Non-electrolytic capacitor (non polarized)

 

CIRCUIT CONNECTION

          A capacitor can be connected either in series or in