BIO120H1 Study Guide - 555 Timer Ic, Electronic Symbol, Multivibrator
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BIO120H1 Full Course Notes
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Description : an integrated circuit with 16 pins. They are often used in timing circuits and to switch on/off leds. Operation: the 4017 ic takes a clock pulse in and then outputs in 10 steps. It counts to a certain number and restarts the count or can stop the count. It can reset at 10 instead of 16, and can make each count available on each pin of the ic. The pulse from the 555 timer can be used to activate a 4017 ic. The 555 ic can pulse it at regular intervals, which will cause the designated pin of the. 4017 ic to emit current lighting the led. Another pulse from the 555 ic results in the next pin of the 4017 ic to emit current. Description : the 555 is an 8pin timer ic. It can be used as a timer which can be controlled by using a resistor and capicator.
