資源描述:
《計算機概述課件》由會員上傳分享,免費在線閱讀,更多相關(guān)內(nèi)容在教育資源-天天文庫。
.1??119462??Eniac?#$%?'()?+,-.?01???56?7?89?;?,-?1??>??A?B?DBEFG?I?JKLM??B,?P?R???U?VWX??Z?[??][?^??`a?bc?d?bc^??`ef6??11T?j??$?DBl???pAqr?ls?Wl?t???wex?DB?$?zB?>?|}??pA“”?“?”?“”ex?zB??2??16?????1??2??3?4??5???¤¥|??¨??3????????a???a??ˉ°¨e±2?3′μ?¥·??K?1o+?|??????àá???l?W5???A??????èl?????1o+?ê?2?ìí??3??DCADa????CAM?4?×???516?ù???+CAI?c??2ü]?Y?F?+a??+?6??-T??4??à?1à2;VWáaJ.????à??1-2?j?1.2??????5???éê??L??????e'b?ò“???”?8????ê?a?0.L2.3.4.5.6.7.8.9?10?ú?üy??ú?t??????????????720.30??7x102+2x101+0x100+3xlO1+0x102,)*??-.?*2.R0?2??3?0?2?????789:R0?2????=?N?@Ri??-.??*?RB9:C???E0?R2?F1G=?FRadixGJK2???N???K?O??=.?R???QE0??S9:JKE0???0,1TK???=?RV2?F2GF?G
19WJKR0??XB?JZ?????[\J?????]?X?`???bc???efg??????ij?k(??)??=?R?IpqRi???sJKR0????n??m`?wx??Ri,?[i=-m~nT?(3)????-.9JR0????X?}?K??bc?f???@??,E0??101.01???-.}101.016=1X22+0X21+1X20+0X2-1+1X2-2=5.25D9:JK??n??@m`??R0?????-.}(N)R=dn-1XRN_l+dn_2XRN-2+…+d2XR2+dlXRl+dOXRO+d_lXR-l+---+d_MXR-M?[diR0?????6E????0?????(1)?0?@E0??=??10@2,?“??0J”@“?E0J”?g?N?10K??(0,1,2,3,4,5,6,7,8,9)@TK??(0,1)???10i@2i(i=-m-n-l,m,n??)?E0?B2[????,g??????????¢???(2)?0?=?16,?N?16K?}0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,Fo?[A,B,C,D,E,F????10,11,12,13,14,15,?16i(i=-m-n-l,?[m?n??)????“??0J”???1-3??8?0~1516K?0??f?ˉ3°???Q±??(3)2?0??3???0???????-.???·9??3???0????}1010.101B=1X23+0X22+1X21+0X201X2-1+0X2-2+1X2-31?????????wx?9JR0??3???0?????XBJ???(4)?0???3??E0????·?0???3??E0??????B?“?Eàá”??????B}·?0????27J??@Já????7???2,?7?JKé???@á??ê??2ì??7???í??V0??\p???7?á?DBQ±?E0?????????Jp7??á??ó????Jp7??á??????·?0?`?3??E0?`?,??B“2à?”?×?ùúB?ü??3??E0?`???B“2à?”?×?ùúB?ü??YT???????0??Q?0???3?1B???=??(5)E0??f?0??à?3??E0??3???0?????B3K?.á???\4?????4??0?????\?4E0??J?0?????0???1.32[?è??7é??è?2[ú??è??EBCDIC?@ASCII??IBMì??í?EBCDIC??í?ASCH?Be??ó?????÷????ù?j???ó?g?7?@8?T°?.???7ASCII?B?7E0???JK?è??è??y30000000B—1111111B,??7=128??,
2?128???7ASCII????14???1-47ASCH???!8"#??1."#%&?'??"#%&'??)*'??+,-.???0127445#4?+?6?6828"#9:4;6763"#?=???>?@?#3755+B?@?#3008?D#?FG>.???.?????IJ2121H—7E7EH?M?;.??NO?P?QRJS>"#??U?MW;?U?W?YP???[U??+?^_?Y`a20H,b?cd"#?.??e"#.??=MWf?[U??g+20HWf?[U??g+20Hij?"#?.??N^+?mbn?opqrs"#?t??e"#t??="#.??+8080H2."#???"#xy?,-??+{J?}~a?#4;?#?????Q???x?R?x?R???xyR;xyR?3."#??"#??J?rst?"#UFG????"#=?+FG???;x???>"#xyrst^bP?c?????◤?D#?FG+#??'1”c??????4."##¢?"##¢?,-#£?"#x¥???rst6+8BU??>#?+J|§¨O??a??>16x16!??#¢?◤?16x16/8=32#?FG¨O?"##¢°@?c°?¢;±2¢D3?5."#???"#???J?"#·6FG"##¢%&??1????o"#????)????+)????????P??6.?à"#=?NO???"#?xy???;x¥?á?+??aJ"#??à=?NO?P?á???91-1?2??"#=??"#%&????6?èmNO???.1.4?é;?ê?rìí?!9rst?é>??éD??ó??;???D??>?rst??à????é???é???*cúrst??é????!10?ê?rìí?ê?rìí°@?ct?ìí?üìí;?ìí33f1gt?ìí?t?ìíJrstY--T?Y?àá??ìí?f2güìí??üìí???ê*cüìí??ê.rstàá?Y?D???üìí?ê?è?t?ìí?êf*??êg+?^éê??f3g?ìí??ìí???è?QR??è?t?ìí?êé???è?QR?“ìí”;“è”Dà?>?ìí??êD??á“è”;“?áe?”é?c??t?ìí.1.5rst????
3?!11rst???órst??J?????;????D????+??1>5?!12”FG?ê??”rst??ù1944ú8?+℉yt??????EDVAC???3??(1)?&'(?)*+??.??1???34??567?957?:5?&'=>?(2)@?BC??.BC??EF)*???IJK?L??.N??(3)34PQ1?.34PQIJRSTU.V?&'W???Z13)*?[?1.?.?]???_9`?ab?cd?f?h?i.9jk.l?ijk.n(ALU)?qc?rs?t3?[??21??1??]?uvwl?x1?9yz?n*RS?|}??????ls??n*?Qn*r1?n*[??(1)?t3?3?34????(2)??????+?1?a?(3)Q??U?Q?9??????Q?d?(4)1?n*???9???1?a[???¢????Q?1??¤n*h?+??(5)????¥??????334?34?]§¨?af????3?_9PQ??3?9??=>?34???34?9?34??CPU±>2334??3??_?3??_±??z??3?·>?CPU239???4.5?7?567??f??]1o????_?PQ:ab??>????a?6?5.57?57??f?=>]1.Wá?d?Px6??????`è?J???Z14ê*?ì?[?ê*?ìí??ìê*9+?ê*???B1?ìê*?ìê*??ì?D????ì(PQ)?òóPQ9?_??ì4????(1)?ì(OS)o¤?ì+?ú¥?5?=>ü????T???T??34?T??7?T?9?*T???ìs??x¥5???????ì??ê?MS-DOS?WindowsìF(xiàn)í???????ì?IBM?DOS/VSEìF(xiàn)í?????ì?UNIX]???ù???ì?
4?I?ì??üy?ì?t2?