鎮ㄥソ锛屾杩庝締鍒扮董搴浕瀛愬競鍫�(ch菐ng)缍�(w菐ng)
鐧婚寗 | 鍏嶈不(f猫i)娉ㄥ唺(c猫)
銆�銆�鍕�(d貌ng)鎱�(t脿i)闅ㄦ(j墨)瀛樺劜(ch菙)鍣�(DRAM=Dynamic Random Access Memory)锛屾槸瑷�(j矛)绠楁(j墨)绯荤当(t菕ng)浣跨敤鐨勯毃姗�(j墨)瀛樺彇鍏�(n猫i)瀛�(RAM)涓殑涓�绋�銆傚畠鍙兘灏囨暩(sh霉)鎿�(j霉)淇濇寔寰堢煭鐨勬檪(sh铆)闁�锛岀偤渚嬩繚鎸�?j菒n)?sh霉)鎿�(j霉)锛屽畠浣跨敤闆诲瀛樺劜(ch菙)銆傛墍浠ワ紝蹇呴爤涓�娈垫檪(sh铆)闁撳埛鏂颁竴娆�锛屽鏋滃瓨鍎�(ch菙)鍠厓娌掓湁琚埛鏂�锛屽瓨鍎�(ch菙)鐨勪俊鎭氨鏈�(hu矛)涓熷け銆�(闂�(gu膩n)姗�(j墨)灏辨渻(hu矛)涓熷け鏁�(sh霉)鎿�(j霉))
銆�銆�鍕�(d貌ng)鎱�(t脿i)闅ㄦ(j墨)瀛樺劜(ch菙)鍣�(寰噺)瀛樻斁涓殑姣忎竴浣嶆暩(sh霉)鎿�(j霉)鍦ㄥ垎闁嬮浕瀹瑰櫒涔嬪収(n猫i)闆嗘垚闆昏矾. 鍥�?y脿n)妾庡類炵⒕濞欒悳楂�鈹忔絾?锛屼俊鎭渶绲傞��鑹�锛岄櫎闈炲懆鏈熸�у湴鍒锋柊闆诲鍣ㄥ厖闆�銆� 鍥犳鍒锋柊瑕佹眰锛屽畠鏄痑 鍕�(d貌ng)鎱�(t脿i) 瑷樻喍鑸囩浉灏�(du矛)SRAM骞朵笖鍏朵粬闈滄厠(t脿i)瑷樻喍銆�
銆�銆�寰噺鐨勫ソ铏曟槸瀹冪殑绲�(ji茅)妲�(g貌u)妯哥礌锛氬儏涓�鏀櫠楂旂鍜岄浕瀹瑰櫒姣忎綅鍦⊿RAM闇�瑕�锛岃垏鍏敮鏅堕珨绠℃瘮杓�銆傞�欏厑瑷卞井閲忓埌閬�(d谩)闈炲父楂� 瀵嗗害.璞RAM锛屽畠鍦ㄩ 鏄撳け鎬ц鎲� 瑷�(sh猫)鍌�锛屽洜?y脿n)妯楅紘G澶卞畠鐨勬暩(sh霉)鎿�(j霉)锛岀暥(d膩ng)鍙栨秷闆绘簮銆傜劧鑰屼笉鍚屼簬SRAM锛屾暩(sh霉)鎿�(j霉)涔熻ū鍦ㄥ姏閲忎互鍚庣煭鏅�(sh铆)闁撲粛鐒舵仮寰�(f霉)銆�
銆�銆�1銆侀毃姗�(j墨)瀛樺彇
銆�銆�鎵�璎傗�滈毃姗�(j墨)瀛樺彇鈥�锛屾寚鐨勬槸鐣�(d膩ng)瀛樺劜(ch菙)鍣ㄤ腑鐨勬秷鎭璁�鍙栨垨?q奴)鎳湋r(sh铆)锛屾墍闇�瑕佺殑鏅�(sh铆)闁撹垏閫欐淇℃伅鎵�鍦ㄧ殑浣嶇疆鐒￠棞(gu膩n)銆傜浉灏�(du矛)鐨�锛岃畝鍙栨垨?q奴)鎳厾妯炶洘L鍟忥紙Sequential Access锛夊瓨鍎�(ch菙)瑷�(sh猫)鍌欎腑鐨勪俊鎭檪(sh铆)锛屽叾鎵�闇�瑕佺殑鏅�(sh铆)闁撹垏浣嶇疆灏辨渻(hu矛)鏈夐棞(gu膩n)绯伙紙濡傜甯讹級銆�
銆�銆�2銆佹槗澶辨��
銆�銆�鐣�(d膩ng)闆绘簮闂�(gu膩n)闁夋檪(sh铆)RAM涓嶈兘淇濈暀鏁�(sh霉)鎿�(j霉)銆傚鏋滈渶瑕佷繚瀛樻暩(sh霉)鎿�(j霉)锛屽氨蹇呴爤鎶婂畠鍊戝鍏ヤ竴鍊�(g猫)闀锋湡鐨勫瓨鍎�(ch菙)瑷�(sh猫)鍌欎腑锛堜緥濡傜‖鐩わ級銆俁AM鍜孯OM鐩告瘮锛屽叐鑰呯殑鍗�(q奴)鍒ユ槸RAM鍦ㄦ柗闆讳互鍚庝繚瀛樺湪涓婇潰鐨勬暩(sh霉)鎿�(j霉)鏈�(hu矛)鑷嫊(d貌ng)娑堝け锛岃�孯OM涓嶆渻(hu矛)銆�
銆�銆�3銆侀珮瑷晱閫熷害
銆�銆�鐝�(xi脿n)浠ｇ殑闅ㄦ(j墨)瀛樺彇瀛樺劜(ch菙)鍣ㄥ咕涔庢槸鎵�鏈夎í鍟忚ō(sh猫)鍌欎腑瀵叆鍜岃畝鍙栭�熷害鏈�蹇殑锛屽彇瀛樺欢閬蹭篃鍜屽叾浠栨秹鍙婃(j墨)姊伴亱(y霉n)浣滅殑瀛樺劜(ch菙)瑷�(sh猫)鍌欑浉姣旓紝涔熼’寰楀井涓嶈冻閬�銆�
銆�銆�4銆侀渶瑕佸埛鏂�
銆�銆�鐝�(xi脿n)浠ｇ殑闅ㄦ(j墨)瀛樺彇瀛樺劜(ch菙)鍣ㄤ緷璩撮浕瀹瑰櫒瀛樺劜(ch菙)鏁�(sh霉)鎿�(j霉)銆傞浕瀹瑰櫒鍏呮豢闆诲悗浠ｈ〃1(浜岄��(j矛n)鍒�)锛屾湭鍏呴浕鐨勪唬琛�0銆傜敱浜庨浕瀹瑰櫒鎴栧鎴栧皯鏈夋紡闆荤殑鎯呭舰锛岃嫢涓嶄綔鐗瑰垾铏曠悊锛屾暩(sh霉)鎿�(j霉)鏈�(hu矛)婕告几闅ㄦ檪(sh铆)闁撴祦澶�銆傚埛鏂版槸鎸囧畾鏈熻畝鍙栭浕瀹瑰櫒鐨勭媭鎱�(t脿i)锛岀劧鍚庢寜鐓у師渚嗙殑鐙�鎱�(t脿i)閲嶆柊鐐洪浕瀹瑰櫒鍏呴浕锛屽綄瑁�(b菙)娴佸け浜嗙殑闆昏嵎銆傞渶瑕佸埛鏂版濂借В閲嬩簡闅ㄦ(j墨)瀛樺彇瀛樺劜(ch菙)鍣ㄧ殑鏄撳け鎬�銆�
銆�銆�5銆佸皪(du矛)闈滈浕鏁忔劅
銆�銆�姝ｅ鍏朵粬绮剧窗(x矛)鐨勯泦鎴愰浕璺�锛岄毃姗�(j墨)瀛樺彇瀛樺劜(ch菙)鍣ㄥ皪(du矛)鐠�(hu谩n)澧冪殑闈滈浕鑽烽潪甯告晱鎰�銆傞潨闆绘渻(hu矛)骞叉摼瀛樺劜(ch菙)鍣ㄥ収(n猫i)闆诲鍣ㄧ殑闆昏嵎锛屽紩鑷存暩(sh霉)鎿�(j霉)娴佸け锛岀敋鑷崇噿澹為浕璺�銆傛晠姝よЦ纰伴毃姗�(j墨)瀛樺彇瀛樺劜(ch菙)鍣ㄥ墠锛屾噳(y墨ng)鍏堢敤鎵嬭Ц鎽搁噾灞帴鍦�銆�
銆�銆�鍕�(d貌ng)鎱�(t脿i) RAM 涔熸槸鐢辫ū澶氬熀鏈瓨鍎�(ch菙)鍏冩寜鐓ц鍜屽垪渚嗙祫鎴愮殑.
銆�銆�3 绠″嫊(d貌ng)鎱�(t脿i) RAM 鐨勫伐浣滃師鐞�
銆�銆�DRAM 鏁�(sh霉)鎿�(j霉)绶� 3 绠″嫊(d貌ng)鎱�(t脿i) RAM 鐨勫熀鏈瓨鍎�(ch菙)闆昏矾濡備笂鍦栨墍绀�.鍦ㄩ�欏��(g猫)闆昏矾涓�,璁�閬告搰绶氬拰瀵伕鎿囩窔鏄垎闁嬬殑,璁� 鏁�(sh霉)鎿�(j霉)绶氬拰瀵暩(sh霉)鎿�(j霉)绶氫篃鏄垎闁嬬殑.
銆�銆�瀵搷浣滄檪(sh铆),瀵伕鎿囩窔鐐�"1",鎵�浠� Q1 灏�(d菐o)閫�,瑕佸鍏ョ殑鏁�(sh霉)鎿�(j霉)閫氶亷 Q1 閫佸埌 Q2 鐨勬煹妤�,骞堕�氶亷鏌垫サ 闆诲鍦ㄤ竴瀹氭檪(sh铆)闁撳収(n猫i)淇濇寔淇℃伅.璁撴垜鍊戠湅涓�涓嬪嫊(d貌ng)鎱�(t脿i)鏁堟灉
銆�銆�璁�鎿嶄綔鏅�(sh铆),鍏堥�氶亷鍏敤鐨勯爯(y霉)鍏呴浕绠� Q4 浣胯畝鏁�(sh霉)鎿�(j霉)绶氫笂鐨勫垎甯冮浕瀹� CD 鍏呴浕,鐣�(d膩ng)璁�閬告搰绶氱偤楂橀浕骞� 鏈夋晥鏅�(sh铆),Q3 铏曚簬鍙皫(d菐o)閫氱殑鐙�鎱�(t脿i).鑻ュ師渚嗗瓨鏈�"1",鍓� Q2 灏�(d菐o)閫�,璁�鏁�(sh霉)鎿�(j霉)绶氱殑鍒嗗竷闆诲 CD 閫氶亷 Q3,Q2 鏀鹃浕,姝ゆ檪(sh铆)璁�寰楃殑淇℃伅鐐�"0",姝ｅソ鍜屽師瀛樹俊鎭浉鍙�;鑻ュ師瀛樹俊鎭偤"0",鍓� Q3 鐩＄鍏峰倷灏�(d菐o)閫氭浠�,浣� 鍥�?y脿n)?Q2 鎴,鎵�浠�,CD 涓婄殑闆诲淇濇寔涓嶈畩,鍥犺��,璁�寰楃殑淇℃伅鐐�"1".鍙,灏�(du矛)閫欐ǎ鐨勫瓨鍎�(ch菙)闆昏矾,璁�寰楃殑淇℃伅鍜屽師渚嗗瓨鍏ョ殑淇℃伅姝ｅソ鐩稿弽,鎵�浠ヨ閫氶亷璁�鍑烘斁澶у櫒閫�(j矛n)琛屽弽鐩稿湪閫佸線 鏁�(sh霉)鎿�(j霉)绺界窔.
銆�銆�涓�鑸▓(j矛)绠楁(j墨)绯荤当(t菕ng)浣跨敤鐨勯毃姗�(j墨)瀛樺彇鍏�(n猫i)瀛�(RAM)鍙垎鍕�(d貌ng)鎱�(t脿i)锛圖RAM锛夎垏闈滄厠(t脿i)闅ㄦ(j墨)瀛樺彇鍏�(n猫i)瀛�(SRAM)鍏╃ó锛屽樊鐣板湪浜嶥RAM闇�瑕佺敱瀛樺劜(ch菙)鍣ㄦ帶鍒堕浕璺寜涓�瀹氬懆鏈熷皪(du矛)瀛樺劜(ch菙)鍣ㄥ埛鏂�锛屾墠鑳界董绯绘暩(sh霉)鎿�(j霉)淇濆瓨锛孲RAM鐨勬暩(sh霉)鎿�(j霉)鍓囦笉闇�瑕佸埛鏂伴亷绋�锛屽湪涓婇浕鏈熼枔锛屾暩(sh霉)鎿�(j霉)涓嶆渻(hu矛)涓熷け銆�
銆�銆�SRAM闈滄厠(t脿i)鐨勯毃姗�(j墨)瀛樺劜(ch菙)鍣細 鐗归粸(di菐n)鏄伐浣滈�熷害蹇紝鍙闆绘簮涓嶆挙闄�锛屽鍏RAM鐨勪俊鎭氨涓嶆渻(hu矛)娑堝け锛屼笉闇�瑕佸埛鏂伴浕璺�锛屽悓鏅�(sh铆)鍦ㄨ畝鍑烘檪(sh铆)涓嶇牬澹炲師渚嗗瓨鏀剧殑淇℃伅锛屼竴缍�(j墨ng)瀵叆鍙娆¤畝鍑猴紝浣嗛泦鎴愬害杓冧綆锛屽姛鑰楄純澶с�係RAM涓�鑸敤渚嗕綔鐐鸿▓(j矛)绠楁(j墨)涓殑楂橀�熺珐娌栧瓨鍎�(ch菙)鍣�(Cache)銆�
銆�銆�DRAM鏄嫊(d貌ng)鎱�(t脿i)闅ㄦ(j墨)瀛樺劜(ch菙)鍣�(Dynamic Random Access Memory)锛� 瀹冩槸鍒╃敤鍫�(ch菐ng)鏁堟噳(y墨ng)绠＄殑鏌垫サ灏�(du矛)鍏惰ク搴曢枔鐨勫垎甯冮浕瀹逛締淇濆瓨淇℃伅锛屼互瀛樺劜(ch菙)闆昏嵎鐨勫灏�锛屽嵆闆诲绔浕澹撶殑楂樹綆渚嗚〃绀衡��1鈥濆拰鈥�0鈥�銆侱RAM姣忓��(g猫)瀛樺劜(ch菙)鍠厓鎵�闇�鐨勫牬(ch菐ng)鏁堟噳(y墨ng)绠¤純灏戯紝甯歌鐨勬湁4绠�锛�3绠″拰鍠鍨婦RAM銆傚洜姝ゅ畠鐨勯泦鎴愬害杓冮珮锛屽姛鑰椾篃杓冧綆锛屼絾缂洪粸(di菐n)鏄繚瀛樺湪DRAM涓殑淇℃伅__鍫�(ch菐ng)鏁堟噳(y墨ng)绠℃煹妤靛垎甯冮浕瀹归噷鐨勪俊鎭毃钁楅浕瀹瑰櫒鐨勬紡闆昏�屾渻(hu矛)閫愭几娑堝け锛屼竴鑸俊鎭繚瀛樻檪(sh铆)闁撶偤2ms宸﹀彸銆傜偤浜嗕繚瀛楧RAM涓殑淇℃伅锛屽繀闋堟瘡闅�1锝�2ms灏�(du矛)鍏跺埛鏂颁竴娆°�傚洜姝�锛岄噰鐢� DRAM鐨勮▓(j矛)绠楁(j墨)蹇呴爤閰嶇疆鍕�(d貌ng)鎱�(t脿i)鍒锋柊闆昏矾锛岄槻姝俊鎭笩澶�銆侱RAM涓�鑸敤浣滆▓(j矛)绠楁(j墨)涓殑涓诲瓨鍎�(ch菙)鍣�銆�
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