Pin _ _ _ Diagram of the 555 I.C. The. MicroChip. On. Off. Microchips are small electronic circuits that have many different components built onto a small piece of silicon (which is a semi-conductor) housed in a plastic case. These can be referred to as IC’s (integrated circuits).
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Microchips are small electronic circuits that have many different components built onto a small piece of silicon (which is a semi-conductor) housed in a plastic case. These can be referred to as IC’s (integrated circuits).
All IC’s are usually set up in a DIL (Dual In Line) configuration, this is where there are two sets of parallel connections (the pins).
As you can be seen from the diagram to the left the I.C has a small circle, this normally identifies pin 1, and the remaining pins are numbered anticlockwise (as shown in the diagram).
The 555 Timer IC
It is possible to use discrete components such as resistors, capacitors, etc to achieve the same results as a 555 timer IC however it is more usual to use the 555 timer IC.
Check your understanding
Look at the pin out diagram, between which two pins would you connect a power supply? ____&___
To which pin would you connect a switch to? ____________
On what pin have you connected your buzzer? __________
Draw a diagram to explain what happens when the 555 timer IC is triggered (pin 2 is activated). You will need to label and explain your diagram.