【正文】
D8GND3abfcgdedpX4S H U M A G U A Na1b15c14d13e12f3g2Q b o11Q c o10C P u9C P d7R5TE4LE6VDD16GND8U 1 0 C D 4 0 1 1 0a1b15c14d13e12f3g2Q b o11Q c o10C P u9C P d7R5TE4LE6VDD16GND8U9 C D 4 0 1 1 0V D DV D DV D DC L K14C L K /E N13R E S E T15Q03Q12Q24Q37Q410Q51Q65Q76Q89Q911C o u t12V C C16GND8U 1 2 C D 4 0 1 7 Ba7b6c4d2e1f9g10dp5GND8GND3abfcgdedpX5S H U M A G U A Na7b6c4d2e1f9g10dp5GND8GND3abfcgdedpX6S H U M A G U A NV D DC L K14C L K /E N13R E S E T15Q03Q12Q24Q37Q410Q51Q65Q76Q89Q911C o u t12V C C16GND8U 1 1 C D 4 0 1 7 B123U 1 3 AC D 4 0 8 1 B123U 1 4 AC D 4 0 1 1564U 1 4 BC D 4 0 1 18910U 1 4 CC D 4 0 1 1121311U 1 4 DC D 4 0 1 1R5R6R7R812J6C O N 212J5C O N 2S1S W D P S TV D D123U 1 5 AC D 4 0 3 0564U 1 5 BC D 4 0 3 0. ..123U 1 6 AC D 4 0 1 1564U 1 6 BC D 4 0 1 1本方案的特點(diǎn) ? 1. 所有數(shù)字邏輯電路均采用 CMOS門。 60進(jìn)制秒計數(shù)譯碼顯示電路 a1b15c14d13e12f3g2Q bo11Q c o10C P u9C P d7R5TE4LE6VDD16GND8U5 C D 40110a1b15c14d13e12f3g2Q bo11Q c o10C P u9C P d7R5TE4LE6VDD16GND8U4 C D 40110V D DV D DV D DC L K14C L K /E N13R E S E T15Q03Q12Q24Q37Q410Q51Q65Q76Q89Q911C ou t12V C C16GND8U3 C D 4017Ba7b6c4d2e1f9g10dp5GND8GND3abfcgdedpX1S M 420501 Ka7b6c4d2e1f9g10dp5GND8GND3abfcgdedpX2S M 420501 K與分校時電路輸出端相異或后接 5 55 定時器的秒脈沖輸出端進(jìn)入分個位計數(shù)器 C D 4 0 11 0 的 C P u 端.. ..秒計數(shù)電路應(yīng)用要點(diǎn) ? 1. 應(yīng)用此電路前必須熟練掌握約翰遜計數(shù)器 CD40110和分頻器 CD4017的器件特性,可以認(rèn)真閱讀其 PDF技術(shù)文檔資料。v)y0C3F7IaLdPgSjVnYq$t*wA1D 4G8JbN eQhTlWoZr% u(y+B2E6H9KcOfRjUmXp!samp。w)z1C4F7JaMePhSkWnZq$u*x+A2D 5H8KbNfQiTlXos% v(y0B3E6I9LdOgRjVmYp!tamp。w)z1C4F7JaMdPhSkWnZq$u*x A2D5H8KbNfQiTlXor%v(y0B3E6I9Lc OgRjVmYp!tamp。v)y0C3F7IaLdPgSjVnYq!t*w A1D4G8JbMe QhTlW oZr%u(x+B2E6H9K cOfRiUmXp!samp。v)y0C3F6IaLdPgSjVnYq!t*wz1D4G8JbMeQhTkWoZ r%u(x+ B2E5H 9KcOf RiUmXpsamp。v)z0C3F7IaMdPgSkVnYq$t*xA1D 5G8JbNeQiTlWor% u(y+B3E6H9LcOfRjUmYp!samp。v) z0C3F7IaLdPgSkVnY q$t*wA1D5G8JbNeQhTlWor%u(y+B2