Digital Electronics University presentation.pdf

Digital Electronics

1. DIGITAL
ELECTRONICS
Advantage, Scope & Future Possibilities
Presented to:
Md. Hasan Maruf
Assistant Professor, Green University
of Bangladesh.
Made by:
Abul Kashem
I.D.:203001010

2. What is Digital Electroncis?
Why was digital electronics needed?

3. Digital Systems : The 21st Era
Basically, the 21st era system uses Silicon wafers IC's, CMOS etc. in the VLSI
technology to build up the large scale electronic devices and machines.
The most commonly used devices are the Data servers, GPS systems,
Security systems, market products like Bar Code Readers etc. !
All these devices are precise and reliable except the user makes his own
mistake, i.e. in these devices, system errors are least possible.
The Cost : Performance ratio is high, hence these are economically
beneficial too !

4. What are Integrated Circuits (IC's) ???
What are Logic Gates ???

5. CMOS – The basic building block IC's today!!!
In CMOS structure, when n-MOS is on, the p-
MOS is off, and when p-MOS is on, the n-MOS
is off !
Thus, the structure of CMOS does the work of
two transistors, consuming the less power of
only one transistor (MOSFET).
This shows the reason why CMOS is being
used at a large scale today.
It is used to make the logic gates.

6. Example of Advantage of Digital Systems over Analog Systems :
The most common present time example is the
speedometers used in vehicles.
In analog meters, there is an error chance of misreading
the speed, while in the digital seven-segment display of a
digital speedometer, there is no chances left for a
misreading error, hence increasing the accuracy !
Even in the digital meters, there is a ‘HOLD’ button to
hold the display value on screen.

7. (Analog Vs Digital) Electronics !!
Analog Elex. : Digital Elex. :
It has usually larger circuits &
occupies more area.
It has smaller integrated circuits
& occupies lesser area.
Analog measuring instruments
are less accurate, chances of
misreading are more.
Digitalmeasuring instruments
are more accurate, and there is
no case of misreading it.
The instruments are delicate
and harms are more in case of
drops and falls.
The instruments are more
strong, and there are lesser
harms on drops and falls.

8. Data Transmission using Digital Systems……
The digital system send the data in the form of packets of digital codes,
thus we can encode and decode them in various formats and codes.
Data encryption is also possible in the digital systems, hence the data
transmission is more secure, and can be manipulated in many formats !
Digital systems are much advantageous in communications.

9. Future Scopes & Possibilities Of Digital Electronics :
The digital electronics uses VLSI
technology, which has considerably
decreased the size and area of the circuit
boards, and has enhanced the accuracy
and performance of the systems.
Moreover, digital systems have the
advantage of data encryption for the
communication purposes !
The data transmission is safe and secure.
All these factors clearly show that the
digital electronics stream has wide future
scope in the modern era !

10. Thank You
Allah Hafez