计组、离散、数据结构更新

计算机组织与结构/淘宝群/2015级作业题/desktop.ini

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计算机组织与结构/淘宝群/考前从入门到精通/0,必考点.txt

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计算机组织与结构/淘宝群/考前从入门到精通/desktop.ini

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计算机组织与结构/淘宝群/考前从入门到精通/试题/13年1月机组题.txt

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+
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计算机组织与结构/淘宝群/课后题答案/组成原理---第五章-答案.txt

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+
+ 
+
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+
+DMA<EFBFBD><EFBFBD>ʽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>׼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Լ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>潻<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ռ<EFBFBD><EFBFBD>CPU<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>DMA<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƣ<EFBFBD><EFBFBD><EFBFBD>CPU<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD>Ȩ<EFBFBD>ø<EFBFBD>DMA<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݽ<EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD>CPU<EFBFBD>䲻<EFBFBD>ܷô棬<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һЩ<EFBFBD>ڲ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҪCPU<EFBFBD><EFBFBD><EFBFBD>жϷ<EFBFBD>ʽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݺ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3<EFBFBD>ַ<EFBFBD>ʽ<EFBFBD>У<EFBFBD>DMA<EFBFBD><EFBFBD>ʽ<EFBFBD><EFBFBD>CPU<EFBFBD>Ĺ<EFBFBD><EFBFBD><EFBFBD>Ч<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߡ<EFBFBD>
+
+ 
+
+5.8. <20><><EFBFBD><EFBFBD>ÿ<EFBFBD><C3BF><EFBFBD>ַ<EFBFBD>=10bits<74><73><EFBFBD><EFBFBD><EFBFBD>ݴ<EFBFBD><DDB4><EFBFBD><EFBFBD><EFBFBD>=480*10=4800bps
+
+ 
+
+5.10 ʲô<CAB2><C3B4>I/O<>ӿڣ<D3BF><DAA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˿ڵ<CBBF><DAB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>I/O<>ӿڣ<D3BF>I/O<>ӿ<EFBFBD><D3BF><EFBFBD><EFBFBD>η<EFBFBD><CEB7>ࣿ
+
+<EFBFBD>𣺽ӿڣ<EFBFBD>CPU<EFBFBD><EFBFBD><EFBFBD>ⲿ<EFBFBD>豸֮<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+
+<EFBFBD>ӿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>˿ڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>𣺲μ<EFBFBD>P186-187<38><37>
+
+<EFBFBD><EFBFBD><EFBFBD>ýӿڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɣ<EFBFBD>P187<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѡ<EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݻ<EFBFBD><EFBFBD>壬<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ת<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>豸״̬<EFBFBD><EFBFBD>
+
+<EFBFBD>ӿڷ<EFBFBD><EFBFBD>ࣨP190<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>/<2F><><EFBFBD>нӿڣ<D3BF><DAA3>ɱ<EFBFBD><C9B1><EFBFBD>/<2F><><EFBFBD>ɱ<EFBFBD><C9B1>̽ӿڣ<D3BF>ͨ<EFBFBD><CDA8>/ר<>ýӿڣ<D3BF><DAA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>/DMA<4D>ͽӿڡ<D3BF>
+
+ 
+
+5.11 <20><><EFBFBD><EFBFBD>I/O<>ӿڵĹ<DAB5><C4B9>ܺͻ<DCBA><CDBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɣ<EFBFBD>
+
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD>I/O<>ӿڵĹ<DAB5><C4B9>ܣ<EFBFBD>P188<38><38><EFBFBD><EFBFBD>ѡַ<D1A1><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><DDA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EEA3AC>ӳ<EFBFBD>豸״̬<D7B4><CCAC>
+
+I/O<>ӿ<EFBFBD><D3BF><EFBFBD><EFBFBD>ɣ<EFBFBD>P190<39><30><EFBFBD><EFBFBD><EFBFBD>豸ѡ<E8B1B8><D1A1><EFBFBD><EFBFBD>·<EFBFBD><C2B7><EFBFBD><EFBFBD><EFBFBD>ݻ<EFBFBD><DDBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>豸״̬<D7B4><CCAC><EFBFBD>ǣ<EFBFBD><C7A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><DFBC><EFBFBD>·<EFBFBD><C2B7>ͼ<EFBFBD><CDBC>ͼ5.31<EFBFBD><EFBFBD>
+
+ 
+
+5.12 <20><><EFBFBD>ϳ<EFBFBD><CFB3><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD><D1AF>ʽ<EFBFBD>Ľӿڵ<D3BF>·<EFBFBD><C2B7>˵<EFBFBD><CBB5><EFBFBD>乤<EFBFBD><E4B9A4><EFBFBD><EFBFBD><EFBFBD>̣<EFBFBD>
+
+<EFBFBD>𣺳<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD><EFBFBD>ʽ<EFBFBD>ӿڵ<EFBFBD>·<EFBFBD>Ĺ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̣<EFBFBD>P193<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ<EFBFBD><EFBFBD>ͼ5.35<EFBFBD><EFBFBD>
+
+ 
+
+5.13 ˵<><CBB5><EFBFBD>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD>ڵ<EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵ<EFBFBD><CFB5>
+
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>·<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģ<EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>Դ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>أ<EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>Դ<EFBFBD><EFBFBD>Ӧһ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڵ<EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD>жϷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>׵<EFBFBD>ַ<EFBFBD><EFBFBD>
+
+<EFBFBD><EFBFBD>ϵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD>Կ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڵ<EFBFBD>ַ<EFBFBD><EFBFBD>ָʾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ô<EFBFBD><EFBFBD>ɻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڵ<EFBFBD>ַ<EFBFBD><EFBFBD>
+
+ 
+
+5.14 ʲô<CAB2><C3B4><EFBFBD><EFBFBD><EFBFBD>£<EFBFBD>I/O<>豸<EFBFBD><E8B1B8>CPU<50><55><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>CPU<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>蹤<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>D<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ1<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><EFBFBD><EFBFBD><EFBFBD>δ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>MASK<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ0<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><EFBFBD><EFBFBD><EFBFBD>󴥷<EFBFBD><EFBFBD><EFBFBD>INTR<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ1<EFBFBD><EFBFBD><EFBFBD><EFBFBD>P195<EFBFBD><EFBFBD>
+
+ 
+
+5.15 ʲô<CAB2><C3B4><EFBFBD>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>к<EFBFBD><D0BA><EFBFBD><EFBFBD>ã<EFBFBD>
+
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>CPU<EFBFBD>ڲ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ENIT<EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD>ENITΪ<EFBFBD><EFBFBD>1<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>CPU<EFBFBD><EFBFBD>Ӧ<EFBFBD>жϣ<EFBFBD>Ϊ<EFBFBD><EFBFBD>0<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>CPU<EFBFBD><EFBFBD>Ӧ<EFBFBD>жϡ<EFBFBD><EFBFBD>ô<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ÿ<EFBFBD><EFBFBD>ж<EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD>ù<EFBFBD><EFBFBD>ж<EFBFBD>ָ<EFBFBD>λ<EFBFBD><EFBFBD>
+
+<EFBFBD><EFBFBD>λ<EFBFBD>ж<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD>䲻ͬ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>жϺͶ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>жϡ<EFBFBD>
+
+ 
+
+5.16. <20><>ʲô<CAB2><C3B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD>£<EFBFBD>CPU<50><55><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><D3A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+
+<EFBFBD>𣺵<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>ʱ<EFBFBD><EFBFBD>CPU<EFBFBD><EFBFBD>Ӧ<EFBFBD>жϵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>1<EFBFBD><EFBFBD>
+
+    CPU<50><55>Ӧ<EFBFBD>жϵ<D0B6>ʱ<EFBFBD>䣺ÿ<E4A3BA><C3BF>ָ<EFBFBD><D6B8>ִ<EFBFBD>н׶εĽ<CEB5><C4BD><EFBFBD>ʱ<EFBFBD>̡<EFBFBD>
+
+ 
+
+5.17. 
+
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD>[ע<>⣺<EFBFBD><E2A3BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>N<EFBFBD><4E><EFBFBD><EFBFBD><EFBFBD>ݵĴ<DDB5><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>жϴ<D0B6><CFB4><EFBFBD><EFBFBD><EFBFBD>]
+
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD>N<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵ<EFBFBD>ʱ<EFBFBD><EFBFBD>=P*N+Q<><51><EFBFBD>룩<EFBFBD><EBA3A9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ÿ<EFBFBD><C3BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD>Ĵ<EFBFBD><C4B4><EFBFBD>ʱ<EFBFBD><CAB1>=( P*N+Q)/N<><4E>
+
+<EFBFBD><EFBFBD><EFBFBD>ԣ<EFBFBD>ÿ<EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD><EFBFBD><EFBFBD>ϵͳ<EFBFBD>ɸ<EFBFBD><EFBFBD>ٵ<EFBFBD><EFBFBD>ж<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD>N/( P*N+Q)<29><>
+
+ 
+
+5.19 <20><><EFBFBD><EFBFBD>[<5B><><EFBFBD><EFBFBD>Ϊ<EFBFBD>ж<EFBFBD>Ƕ<EFBFBD>ס<EFBFBD>] <20><>ӡ<EFBFBD><D3A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧͣ<D3A6><CDA3><EFBFBD><EFBFBD><EFBFBD>ȴ<EFBFBD><C8B4>̲<EFBFBD><CCB2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ټ<EFBFBD><D9BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>⣬<EFBFBD><E2A3AC>ӡ<EFBFBD><D3A1><EFBFBD>ٶȱȴ<C8B1><C8B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ٶ<EFBFBD><D9B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͣ<EFBFBD><CDA3>ӡ<EFBFBD><D3A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݶ<EFBFBD>ʧ<EFBFBD><CAA7>
+
+ 
+
+5.20 <20>𣺵<EFBFBD><F0A3BAB5><EFBFBD><EFBFBD>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>жϵĴ<CFB5><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>P201 ͼ5.43
+
+<EFBFBD><EFBFBD>ͬ<EFBFBD><EFBFBD><EFBFBD>ڻָ<EFBFBD><EFBFBD>ֳ<EFBFBD>֮<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>жϷ<EFBFBD><EFBFBD><EFBFBD>֮ǰ<EFBFBD><EFBFBD><EFBFBD>жϣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>жϣ<EFBFBD><EFBFBD>ڱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֳ<EFBFBD>֮<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>жϣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD>ֶ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>жϡ<EFBFBD>
+
+ 
+
+5.21 <20>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8>ʲô<CAB2><C3B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʲô<CAB2>ط<EFBFBD><D8B7><EFBFBD>
+
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8>ʲô<CAB2><C3B4>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8><EFBFBD>Ĵ<EFBFBD><C4B4><EFBFBD>PC<50><43>
+
+ 
+
+5.28 CPU<50><55>DMA<4D><41><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧʱ<D3A6><CAB1><EFBFBD>Ƿ<EFBFBD><C7B7><EFBFBD>ͬ<EFBFBD><CDAC>Ϊʲô<CAB2><C3B4>
+
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧʱ<EFBFBD>䲻ͬ<EFBFBD><EFBFBD>CPU<EFBFBD><EFBFBD>ӦDMA<EFBFBD><EFBFBD>ʽ<EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD>ڽ<EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD>ж<EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD>ִ<EFBFBD>н<EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> P210<31><30>
+
+ԭ<EFBFBD>򣺲<EFBFBD><EFBFBD><EFBFBD>DMA<EFBFBD><EFBFBD>ʽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ٶȺܿ죬CPU<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ը<EFBFBD><EFBFBD>̵<EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݶ<EFBFBD>ʧ<EFBFBD><EFBFBD>
+
+5.29 <20><><EFBFBD><EFBFBD>DMA<4D>ӿڵ<D3BF>·˵<C2B7><CBB5><EFBFBD>乤<EFBFBD><E4B9A4><EFBFBD><EFBFBD><EFBFBD>̣<EFBFBD><CCA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+
+<EFBFBD>𣺲μ<EFBFBD>P207<EFBFBD><EFBFBD>ͼ5.47<EFBFBD><EFBFBD>P205<EFBFBD><EFBFBD>
+
+ 
+
+5.30 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD><DAA3><EFBFBD><EFBFBD>ݴ<EFBFBD><DDB4>ͽ׶Σ<D7B6>CPU<50>Ƿ<EFBFBD><C7B7><EFBFBD>ȫֹͣ<CDA3>ô档
+
+         ͼ<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԭ<EFBFBD><D4AD>ch5(5).ppt<70><74>P5~8<><38>
+
+ 
+
+5.31 <20><><EFBFBD><EFBFBD>ÿ<EFBFBD><C3BF><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1>=1/40k =25*10-6=25us, С<><D0A1>40us<75><73><EFBFBD><EFBFBD><EFBFBD>ԣ<EFBFBD><D4A3><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD>жϷ<D0B6>ʽ<EFBFBD><CABD>
+
+ 
+
+5.32. <20><><EFBFBD><EFBFBD>[<5B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̴<EFBFBD><CCB4><EFBFBD><EFBFBD>ٶȣ<D9B6>Ȼ<EFBFBD><C8BB><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8>ִ<EFBFBD><D6B4><EFBFBD>ٶȽ<D9B6><C8BD>бȽ<D0B1>]
+
+<EFBFBD><EFBFBD><EFBFBD>̵<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>=(3000/60)*8*1kB = 50*8k (B/s)
+
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݴ<EFBFBD><EFBFBD>͵<EFBFBD>Ƶ<EFBFBD><EFBFBD> >= <20><><EFBFBD>̵<EFBFBD><CCB5><EFBFBD><EFBFBD>ݴ<EFBFBD><DDB4><EFBFBD><EFBFBD>ʣ<EFBFBD><CAA3><EFBFBD><EFBFBD>ݲŲ<DDB2><C5B2><EFBFBD>ʧ<EFBFBD><CAA7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߵ<EFBFBD><DFB5><EFBFBD><EFBFBD>ݴ<EFBFBD><DDB4>͵<EFBFBD>Ƶ<EFBFBD><C6B5> f >= [(50*8k*8)bits/16bits]<5D><> f >= 200kHz<48><7A>
+
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ÿ<EFBFBD>δ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD>䣺t<=1/200kHz <20><> t<=5us. 
+
+<EFBFBD><EFBFBD>ʽ<EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ÿ<EFBFBD><EFBFBD>5us<EFBFBD><EFBFBD><EFBFBD>봫<EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݽ<EFBFBD><EFBFBD><EFBFBD>ʧ<EFBFBD><EFBFBD>
+
+<EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD>ִ<EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD>Ϊ25us, Զ<><D4B6><EFBFBD><EFBFBD>5us, <20><><EFBFBD>˲<EFBFBD><CBB2><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1>ӦDMA<4D><41><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+
+<EFBFBD>ɲ<EFBFBD><EFBFBD>õķ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĵ<EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD>ڽ<EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD>ӦDMA<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+
+ -------------------------------------------------
+
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߣ<EFBFBD>ľ<EFBFBD><EFBFBD>ˮ http://www.cnblogs.com/muyoushui
+
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD>: <20><><EFBFBD><EFBFBD>ԭ<EFBFBD><D4AD>