文档介绍：Ｓtrucｔuｒe　anｄｆunｃｔｉon oｆ the ＭＣS—５１ｓeriｅｓ
　　Ｓtructure and　fｕｎcｔiｏn of tｈe MCS－５1 series ｏne－cｈiｐ computer ＭＣＳ-５1 is ａｎame　of a pｉecｅｏf one－chiｐ cｏmpuｔer　ｓeriｅs ｗｈich Ｉntel Ｃompaｎy　produces。　Thiｓ　coｍpany iｎtｒoduced　８ top—grade onｅ-cｈip　compuｔers　of MCＳ－５１ sｅｒｉeｓ in 1980　aftｅr　inｔrｏducing ８ one-chip coｍpuｔers of MCS-4８　seｒies iｎ１９７６。　It　ｂｅlｏng tｏ a lot of kiｎdｓ tｈis line oｆ oｎe—chｉｐ computer ｔｈe chｉｐs have，suｃh as　8051,　8031， 8751,　8０C５1BH, 80C31ＢＨ，eｔc．， tｈeir　baｓiｃ composition， bａsic pｅrformanｃe ａnd ｉnstrｕｃtion system　ａre ａll tｈe　samｅ． 8051 ｄaiｌｙ repｒesentativeｓ- 51 seriaｌ one—chip　ｃomｐuteｒs .
An　oｎe—cｈiｐｃoｍputeｒ system is made up ｏｆ sｅveｒａl followｉｎg ｐarts：　( 1）Ｏnｅ mｉｃroｐｒocｅｓsｏr ｏf 8 (CＰU）．　（２） At slicｅ dａtａ meｍory RAＭ（128B/256Ｂ)，iｔ use　ｎot　ｄepoｓiｔtｉｎg not ｃan　rｅaｄinｇ /daｔａｔhat write，　such aｓｒesｕｌｔ not mｉddlｅ oｆｏpｅratioｎ， fiｎａl result anｄ　dａｔa　waｎted tｏ show，ｅtｃ． ( 3)　Procｅｄure　ｍｅmoｒｙＲOM／ＥPＲOM （４KB/８KB ), is useｄ　tｏｐｒeserｖe the procｅdｕre , ｓoｍe iｎiｔiａl datａ anｄ forｍ in ｓlice. But doeｓ nｏt tａｋe ROM/EPRＯＭ witｈin some　ｏne—ｃhiｐ cｏmputers, ｓuch as 8031　， 8032, 80C ,eｔc.. ( ４） Four　8 rｕn side　by ｓide I/Ｏ intｅｒface　P0 foｕｒＰ３， eａch moutｈｃａn　use ａs iｎtroducｔiｏn , ｍay ｕsｅ　ａs ｅxｐｏrting　tｏo．　( 5） Two ｔimer /　coｕｎter，ｅach　ｔimeｒ / coｕｎteｒ may ｓｅt uｐ and　count iｎ thｅｗay， useｄ to ｃount ｔo tｈe　eｘteｒnaｌ incｉdent, can set ｕp into ａ tｉmｉｎｇ way　tｏo， and ｃan accｏｒｄｉnｇ to ｃｏｕnt ｏｒ　reｓult of timing　realiｚe　ｔhe ｃｏntrol　of the ｃomputeｒ。（　6）　Five　cut off cｕtting ｏff thｅ cｏnｔrol sｙｓｔｅm of the sｏｕrｃe 。 (　7) Oｎe ａlｌ　duplexinｇｓeriaｌ I/O mouth oｆ UAＲT （unｉversal　ａsynchrｏnｏuｓ recｅivｅｒ/transmitｔer (UART) ），　is ｉｔ reａｌｉｚe one—chip computer or ｏｎｅ－cｈｉp cｏmputer　anｄｓerial　ｃｏｍｍuｎiｃation　of compｕtｅｒ tｏ usｅ for．（ 8) Strｅtch osciｌlatｏr aｎd　clｏck pｒoｄｕce ciｒcuiｔ， quartz ｃrｙstal ｆinely tｕne elｅｃtric cａpacity ｎｅed outｅｒ．　Allow　oscillatｉon frｅquency ａｓ 1２ｍegａhertas　noｗ at　moｓt． Evｅｒy　ｔhe aｂove—mｅnｔｉoned　parｔ was ｊoineｄ througｈ　the　inｓide　ｄatａｂuｓ。Among ｔｈｅm， CPU　is