Seven segment display usually occur in
Q. Seven segment display usually occur in _______ types- Published on 20 Oct 15a. Common anode
b. Common Cathode
c. Both a & b
d. None of the above
ANSWER: Both a & b
Seven segment display exists in two types namely common anode and common cathode.
Generally, all the cathodes of the diodes are connected together to ground in common cathode type.
The reason behind this connectivity is that it becomes feasible to light any segment by applying forward biasing to that specific LED.
Therefore, only +5 V supply is sufficient to anode so as to light the segments at this level.
On the contrary, all the anodes in common anode mode or type are together connected to +5V and hence, ground is supposed to light the segments individually.
Both the common modes of anode and cathode types are usually taken into account while generating the seven segment display.
