1. SEVEN SEGMENT DISPLAY By :- Shubham & Sidhant

2. WHAT EXACTLY IT IS …?  A seven-segment display (SSD), or seven-segment indicator, is a form of electronic display device used for displaying decimal numerals that is an alternative to the more complex dot- matrix displays.

3. WHAT IT REQUIRES …? Seven-segment displays require -:  liquid crystal display (LCD)  arrays of light-emitting diodes (LEDs)  other light-generating or controlling techniques such as cold cathode gas discharge, vacuum fluorescent, etc can also be used.

4. Concept And Visual Structure  A seven segment display, as its name indicates, is composed of seven elements.  Individually on or off, they can be combined to produce simplified representations of the Arabic numerals.  Often the seven segments are arranged in an oblique (slanted) arrangement, which aids readability.  In most applications, the seven segments are of nearly uniform shape and size (usually elongated hexagons, though trapezoids and rectangles can also be used).

5. How it works …?  The image on the left is your typical seven segment display with each of the segments labeled with the 1 - 7. To display digits on these displays you turn on some of the LEDs. For example, when you illuminate segments 3 and 5 for example your eye perceives it as looking like the number "1." Light up 2, 3, and 5 and you will see what looks like a "7." Ok, so it isn't rocket science :-)

6. Earlier version

7. BLOCK DIAGRAM

8. MODIFIED VERSION

9. BLOCK DIAGRAM

10. FUTURE MODIFICATIONS  Seven segmental display consisting of 4 digit numbers.  Connect ssd with different circuits.

11. SOME OF THE USES Seven-segment displays are widely used in :-  digital clocks  electronic meters  other electronic devices for displaying numerical information.  Multiple-digit LED displays as used in pocket calculators