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15 Jan 2020 12:27:21 UTC
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LED Traffic Lights
An unusual implementation of LED traffic lights.
This is a programmable unit employing a 2k byte CMOS static RAM chip (Sony CXK5814P-35L) and a latch (74LS273 or 74HC273). A 555 timer is used as a clock and is connected to the CLK input of the latch.
...
https://www.youtube.com/watch?v=KvhAYFCmsV0
This is a programmable unit employing a 2k byte CMOS static RAM chip (Sony CXK5814P-35L) and a latch (74LS273 or 74HC273). A 555 timer is used as a clock and is connected to the CLK input of the latch.
...
https://www.youtube.com/watch?v=KvhAYFCmsV0
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