Step 1: Insert the 555 timer chip into the Snap Circuits IC Socket block

The 555 Timer IC was introduced by a company called Signetics (later bought out by Philips) in 1972 and was designed by Hans R. Camenzind in 1971. The 555 chip has 25 transistors, 15 resistors and 2 diodes in an 8 pin DIP (Dual In-line Package) and looks like a square bug with eight legs. It has a notch at the top and Pin 1 is in the top left corner. (See picture 1) (Source: http://en.wikipedia.org/wiki/File:Signetics_NE555N.JPG)

The Snap Circuits Eight-Pin IC Socket block is picture 2 (source: http://cs-sales.net/eiicso6u8.html)

Insert the 555 timer chip into the Snap Circuits Eight-Pin IC Socket block. Make sure that the notch in the top of the 555 timer chip is aligned with the diagram of the chip pictured on the IC socket block. (See picture 3) (Source: http://www.snapcircuits.net/learning_center/designer)
<p>Note that the Snap Circuits Extreme SC-750 no longer contains the 8 pin IC socket block so you will need to purchase the additional part.</p>
who will use this anyway?
Makers, people who want to learn electronics, K-12 teachers, post-secondary educators, scientists, technologists, engineers, mathematicians...

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