進(jìn)口CARLO GAVAZZI計(jì)數(shù)器的概述計(jì)數(shù)是一種zui簡單基本的運(yùn)算，計(jì)數(shù)器就是實(shí)現(xiàn)這種運(yùn)算的邏輯電路，計(jì)數(shù)器在數(shù)字系統(tǒng)中主要是對脈沖的個(gè)數(shù)進(jìn)行計(jì)數(shù)，以實(shí)現(xiàn)測量、計(jì)數(shù)和控制的功能，同時(shí)兼有分頻功能，計(jì)數(shù)器是由基本的計(jì)數(shù)單元和一些控制門所組成，計(jì)數(shù)單元?jiǎng)t由一系列具有存儲信息功能的各類觸發(fā)器構(gòu)成，這些觸發(fā)器有RS觸發(fā)器、T觸發(fā)器、D觸發(fā)器及JK觸發(fā)器等。計(jì)數(shù)器在數(shù)字系統(tǒng)中應(yīng)用廣泛，如在電子計(jì)算機(jī)的控制器中對指令地址進(jìn)行計(jì)數(shù)，以便順序取出下一條指令，在運(yùn)算器中作乘法、除法運(yùn)算時(shí)記下加法、減法次數(shù)，又如在數(shù)字儀器中對脈沖的計(jì)數(shù)等等。計(jì)數(shù)器可以用來顯示產(chǎn)品的工作狀態(tài)，一般來說主要是用來表示產(chǎn)品已經(jīng)完成了多少份的折頁配頁工作。它主要的指標(biāo)在于計(jì)數(shù)器的位數(shù)，常見的有3位和4位的。很顯然，3位數(shù)的計(jì)數(shù)器zui大可以顯示到999，4位數(shù)的zui大可以顯示到9999。

進(jìn)口CARLO GAVAZZI計(jì)數(shù)器作用在數(shù)字電子技術(shù)中應(yīng)用的zui多的時(shí)序邏輯電路。計(jì)數(shù)器不僅能用于對時(shí)鐘脈沖計(jì)數(shù)，還可以用于分頻、定時(shí)、產(chǎn)生節(jié)拍脈沖和脈沖序列以及進(jìn)行數(shù)字運(yùn)算等。但是并無法顯示計(jì)算結(jié)果，一般都是要通過外接LCD或LED屏才能顯示。

計(jì)數(shù)器的種類1、如果按照計(jì)數(shù)器中的觸發(fā)器是否同時(shí)翻轉(zhuǎn)分類，可將計(jì)數(shù)器分為同步計(jì)數(shù)器和異步計(jì)數(shù)器兩種。

進(jìn)口CARLO GAVAZZI常見的同步計(jì)數(shù)器有74160系列,74LS190系列，常見的異步計(jì)數(shù)器有如果按照技術(shù)過程中數(shù)字增減分類，又可將計(jì)數(shù)器分為加法計(jì)數(shù)器、減法計(jì)數(shù)器和可逆計(jì)數(shù)器，隨時(shí)鐘信號不斷增加的為加法計(jì)數(shù)器，不斷減少的為減法計(jì)數(shù)器，可增可減的叫做可逆計(jì)數(shù)器。

另外還有很多種分類不一一列舉，但是zui常用的是*種分類，因?yàn)檫@種分類可以使人一目了然，知道這個(gè)計(jì)數(shù)器到底是什么觸發(fā)方式，以便于設(shè)計(jì)者進(jìn)行電路的設(shè)計(jì)EA2-3T,EA2-4.5T,EA2-5T,EA2-6T,EA2-9T,EA2-12T,EA2-24T,EA2-3S,EA2-4.5S,EA2-5S,EA2-6S,EA2-9S,EA2-12S,EA2-24S,EA2-3NU,EA2-4.5NU,EA2-5NU,EA2-6NU,EA2-9NU,EA2-12NU,EA2-24NU,EA2-3TNU,EA2-4.5TNU,EA2-5TNU,EA2-6TNU,EA2-9TNU,EA2-12TNU,EA2-24TNU,EA2-3SNU,EA2-4.5SNU,EA2-5SNU,EA2-6SNU,EA2-9SNU,EA2-12SNU,EA2-24SNU,EA2-3NJ,EA2-4.5NJ,EA2-5,EA2-6NJ,EA2-9NJ,EA2-12NJ,EA2-24NJ,EA2-3TNJ,EA2-4.5TNJ,EA2-5TNJ,EA2-6TNJ,EA2-9TNJ,EA2-12TNJ,EA2-24TNJ,EA2-3SNJ,EA2-4.5SNJ,EA2-5SNJ,EA2-6SNJ,EA2-9SNJ,EA2-12SNJ,EA2-24SNJ,EB2-3,EB2-4.5,EB2-5,EB2-6,EB2-9,EB2-12,EB2-24,EB2-3T,EB2-4.5T,EB2-5T,EB2-6T,EB2-9T,EB2-12T,EB2-24T,EB2-3NU,EB2-4.5NU,EB2-5NU,EB2-6NU,EB2-9NU,EB2-12NU,EB2-24NU,EB2-3TNU,EB2-4.5TNU,EB2-5TNU,EB2-6TNU,EB2-9TNU,EB2-12TNU,EB2-24TNU,EC2-3,EC2-4.5,EC2-5,EC2-6,EC2-9,EC2-12,EC2-24,EC2-3T,EC2-4.5T,EC2-5T,EC2-6T,EC2-9T,EC2-12T,EC2-24T,EC2-3S,EC2-4.5S,EC2-5S,EC2-6S,EC2-9S,EC2-12S,EC2-24S,EC2-3NU,EC2-4.5NU,EC2-5NU,EC2-6NU,EC2-9NU,EC2-12NU,EC2-24NU,EC2-3TNU,EC2-4.5TNU,EC2-5TNU,EC2-6TNU,EC2-9TNU,EC2-12TNU,EC2-24TNU,EC2-3SNU,EC2-4.5SNU,EC2-5SNU,EC2-6SNU,EC2-9SNU,EC2-12SNU,EC2-24SNU,EC2-3NJ,EC2-4.5NJ,EC2-5,EC2-6NJ,EC2-9NJ,EC2-12NJ,EC2-24NJ,EC2-3TNJ,EC2-4.5TNJ,EC2-5TNJ,EC2-6TNJ,EC2-9TNJ,EC2-12TNJ,EC2-24TNJ,EC2-3SNJ,EC2-4.5SNJ,EC2-5SNJ,EC2-6SNJ,EC2-9SNJ,EC2-12SNJ,EC2-24SNJ,EE2-3,EE2-4.5,EE2-5,EE2-6,EE2-9,EE2-12,EE2-24,EE2-3T,EE2-4.5T,EE2-5T,EE2-6T,EE2-9T,EE2-12T,EE2-24T,EE2-3NU,EE2-4.5NU,EE2-5NU,EE2-6NU,EE2-9NU,EE2-12NU,EE2-24NU,EE2-3TNU,EE2-4.5TNU,EE2-5TNU,EE2-6TNU,EE2-9TNU,EE2-12TNU,EE2-24TNU,UA2-3,UA2-3NU,UA2-3NJ,UA2-3S,UA2-3SNU,UA2-3SNJ,UA2-4.5,UA2-4.5NU,UA2-4.5NJ,UA2-4.5S,UA2-4.5SNU,UA2-4.5SNJ,UA2-5,UA2-5NU,UA2-5NJ,UA2-5S,UA2-5SNU,UA2-5SNJ,UA2-12,UA2-12NU,UA2-12NJ,UA2-12S,UA2-12SNU,UA2-12SNJ,UB2-3,UB2-3NU,UB2-3NJ,UB2-3S,UB2-3SNU,UB2-3SNJ,UB2-4.5,UB2-4.5NU,UB2-4.5NJ,UB2-4.5S,UB2-4.5SNU,UB2-4.5SNJ,UB2-5,UB2-5NU,UB2-5NJ,UB2-5S,UB2-5SNU,UB2-5SNJ,UB2-12,UB2-12NU,UB2-12NJ,UB2-12S,UB2-12SNU,UB2-12SNJ,UC2-3,UC2-3NU,UC2-3NJ,UC2-3S,UC2-3SNU,UC2-3SNJ,UC2-4.5,UC2-4.5NU,UC2-4.5NJ,UC2-4.5S,UC2-4.5SNU,UC2-4.5SNJ,UC2-5,UC2-5NU,UC2-5NJ,UC2-5S,UC2-5SNU,UC2-5SNJ,UC2-12,UC2-12NU,UC2-12NJ,UC2-12S,UC2-12SNU,UC2-12SNJ,UD2-3,UD2-3NU,UD2-3NJ,UD2-3S,UD2-3SNU,UD2-3SNJ,UD2-4.5,UD2-4.5NU,UD2-4.5NJ,UD2-4.5S,UD2-4.5SNU,UD2-4.5SNJ,UD2-5,UD2-5NU,UD2-5NJ,UD2-5S,UD2-5SNU,UD2-5SNJ,UD2-12,UD2-12NU,UD2-12NJ,UD2-12S,UD2-12SNU,UD2-12SNJ,MR62-5SRY,MR62-6SRY,MR62-9SRY,MR62-12SRY,MR62-24SRY,MR62-48SRY,MR62-5KSR,MR62-6KSR,MR62-9KSR,MR62-12KSR,MR62-24KSR,MR62-48KSR,MR62-5KSRY,MR62-6KSRY,MR62-9KSRY,MR62-12KSRY,MR62-24KSRY,MR62-48KSRY,MR62-5SR,MR62-6SR,MR62-9SR,MR62-12SR,MR62-24SR,MR62-48SR,MR62-4.5UKSRYZ,MR62-5UKSRYZ,MR62-6UKSRYZ,PDF,MR62-9UKSRYZ,MR62-12UKSRYZ,MR62-24UKSRYZ,MOS-FET,代替,PHOTOMOS,MR602,MR612,MR622,MR22-12S,MR22-24S,MR22-48S,MR22-60S,MR24-5S,MR24-6S,MR24-12S,MR24-24S,MR24-48S,MR24-60S,MR301,MR321A,EN2,EP2,EP1,V23100,V23026,V23111,T81,T84,RE030012,RE030024,PE,V23092-A1024-A301,V23092-A1024-A302,V23092-A1012-A301,V23092-A1012-A302,T77,T73,T7N,T7C,T75,T9A,T92,V23047,V23049-B,V23050,V23048,R10,KH,KHA,PT,K10,KUP,RM2,RM3,RM7,KUEP,KUIP,KUGP,RM5,RM6,KUMP,

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