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Multisim pattern four lights controller
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Four pattern Lantern controller (a) basic requirements: design 14 pattern automatically switch of Lantern controller, requirements achieved (1) Lantern a bright a out, from left right mobile; (2) Lantern two bright two out, from left right mobile; (3) four bright four out, from left right mobile (4) from 1~8 from left to right successive points bright, then successive extinguished; (5) four species pattern automatically transform. (B) the main reference: 555 timer, die 16 74LS161 counters, dual d flip-flop 74LS74, with 74LS08, not 74LS04, four data selector 74LS153, eight-bit shift register 74LS164.
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