Oscilloscope screenshot showing a slightly misshapen squarewave at 4MHz.
https://assets.chaos.social/media_attachments/files/112/489/073/361/133/490/original/f58b485d1018f896.jpeg
I got a hint that the 74LS74 flip flop divides the clock twice. First to 2MHz then to 1Mhz. But both outputs look misshapen and measure at 4MHz.
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