Page 13 - Template EBook Kita (A4 Document)

TOPIC 1: INTRODUCTION TO 555 TIMER

WHAT'S IN A 555 TIMER?

3 flip flop The outputs of the comparators are

given as inputs to a flip flop. An SR
flip-flop is a memory element that can

store and output a logic “0” or logic

“1” depending on the two inputs SET

and RESET or S and R, respectively.

S R Q Q'

0 0 Memory Memory

1 0 1 0

0 1 0 1

1 1 Invalid Invalid

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