This page shows the pin layouts of the various ICs used on the website. I only use 4000 series CMOS ICs at the moment and so these are the ones that are listed. However, there are 7400 series equivalents for every IC listed and a really good reference book is the CMOS Cookbook.
CAUTION: The 4000 series ICs are based on MOSFET technology which makes them very sensitive to static. Handle the ICs carefully!
The number 1 pin is identified by either a dot placed near the pin or by a semi-circular cut out at one end of the chip as shown.
4001 Quad 2 input NOR gate
4011 Quad 2 input NAND gate
4069 Hex NOT gate
4071 Quad 2 input OR gate
4081 Quad 2 input AND gate
4013 Dual D-type flip-flop
4017 Decade counter (÷10 counter)
4026 Decade counter (÷10 counter) with 7-segment driver
4043 Quad RS (NOR Logic) Bistable with common enable
4510 Divide by 10 BCD Up-Down Counter
741 Operational Amplifier
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