RS-pafiripi-chips on whitekuva. Musimboti kushanda, chadzo diagrams, tafura iitike

Rinokonzera - zano nyore ndiyo digital muchina. Rine mbiri mamiriro hachichinji. Mumwe izvi ezvinhu ari basa kukosha "1", uye mumwe - "0". Rukungiso ezvinhu, uye kukosha mashoko binary iyo inochengeterwa zvirimo, goho anonongedzera akatsunga: Direct uye inverted. In Kana apo zvakananga goho dzingangoitika chichasimbiswa, iyo yakafanana pfungwa imwe, mamiriro pafiripi-chips on whitekuva akadana unit (zvinogona panguva inverted goho riri razero). Kana zvakananga goho hakusi zvinogona, ipapo chikungiso ezvinhu anonzi razero.

Zvinokonzera dzinoiswa nemashoko anotevera zvinhu:

1. Pakazosvika nzira pakunyora mashoko (synchronous uye asynchronous).

2. By nzira dzokudzora mashoko (nhamba, hunosanduka, chimwe-chikuva, multistage).

3. By nzira Kuzadziswa akanyatsorongwa kwokubatana (JK-pafiripi-chips on whitekuva, RS-ude, T-Triger, D-pafiripi-chips on whitekuva uye mamwe marudzi).

The chikuru parameters pakubhadhara ose ude ndivo kupfuura kukosha mazano chiratidzo nguva, kunonoka nguva inodiwa yokuti nokuchinja ari pafiripi-chips on whitekuva, uye achitendera oparesheni nguva.

Munyaya ino, ngatimbotaura pamusoro ichi mhando mudziyo, sezvo RS-pafiripi-chips on whitekuva. Ivo vari marudzi maviri: synchronous uye asynchronous.

Asynchronous RS-pafiripi-chips on whitekuva ane mitsetse miviri zvinovaka (R uye S) chiyamuro. mudziyo uyu anoshanda maererano tafura iitike.

Hazvitenderwi kuti vakadaro pafiripi-chips on whitekuva kunosanganisira anonongedzera panguva zvinoshandisa pakurima ari mudziyo, kukonzera mamiriro chokwadi. Kubatana uku kungaratidzwa sechinhu chinodiwa RtSt = 0. In kuderedza Karnaugh mepu akaratidza mutemo rukungiso oparesheni, unonzi maitiro mukana wokuti vanhu vanga: Q (T + 1) = St V R'tQt. Saka RtSt ndiye razero.

On ari dzichipfekeka dhayagiramu zvinoratidza RS-pafiripi-chips on whitekuva asynchronous mhando NAND uye yechipiri kuita pamusoro kana zvinhu.

The mhando rechipiri - synchronous RS-FF. Akadaro zano iri zvayakaita ane nhatu yakananga zvinoshandisa pakurima S, R, uye C. The musiyano pakati synchronous uye asynchronous mhando pafiripi-chips on whitekuva ndiyo kuvapo yaunonyanya kushandisa mazano (C). Zvakafanira kuti zvinotevera: nekuti ari mudziyo zvinoshandisa pakurima (pfungwa chaikosha) anonongedzera kutumwa kwete nguva dzose panguva imwe chete. Izvi imhaka yokuti ivo napo mhando dzakasiyana uye uwandu nodes kuti sokunonoka zvakasiyana. Fani iyi inonzi "machisa." Somugumisiro "zviitiko" vakadaro chiratidzo tsika vakawana zvichange seari pasi yapfuura tsika nezvimwe zviratidzo. izvi zvose zvinotungamirira zvinorasisa venhema namano.

Fani iyi inogona kubviswa nokushandisa mazano anonongedzera nguva gating mudziyo. Kureva panguva mazano wesuwo NAND kunze zvakananga mashoko anonongedzera akapa kiyi synchronizing pulses, ichi ruzivo nguva mazano anonongedzera vane nguva kukiya angonanga mazano.

Mukuru zvimiso kwakarurama kwomudzimu nokuchinja pfungwa nzendo dziri RS-pafiripi-chips on whitekuva uye pfungwa kudzora navo - RT unacceptability mawa chiito kana chiratidzo St, mumwe nokuchinja zano, uye mashoko acho kubva goho Q (T + 1) pafiripi-chips on whitekuva. Panyaya iyi, zvinogona akatevedzana rine chete synchronous okunze.

RS-mhando pafiripi-chips on whitekuva synchronous unhu anomirirwa mukana wokuti vanhu vanga: Q (T + 1) = StCt V R'tQt V QtC't.

Mufananidzo inoratidza RS-rukungiso synchronous mhando NAND. Chiyamuro AND namasuwo, hazvina musoro hadzisisina chakasvitswa kuti nokuchinja Data chiyamuro S kana R kuti anodiwa zvinoshandisa pakurima asynchronous RS kutaipa chihuri pamwe inverted chiyamuro chete kana mazano kune synchronous (C) chiratidzo pane pfungwa imwe.