Video: Dab tsi yog qhov txawv ntawm thawj tiam thiab thib ob tiam programming lus?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Hauv thawj tiam lub ntsiab nco yog hauv daim ntawv ntawm magnetic nruas thiab hauv tiam thib ob lub ntsiab nco yog hauv tsim RAM thiab ROM. Punched card thiab magnetic daim kab xev tau siv nyob rau hauv thawj tiam thiab magnetic daim kab xev tau siv nyob rau hauv tiam thib ob . Tshuab lus tau siv nyob rau hauv ua ntej thiab sib dhos lus tau siv nyob rau hauv thib ob.
Yog li ntawd, dab tsi yog qhov txawv ntawm ib tug thawj thiab thib ob tiam program language?
Ua ntej - tiam lus yog cov ntaub ntawv yooj yim cov lus qhia rau processors ua. Thib ob - tiam lus siv lub assembler los hloov lus nqe lus rau hauv tshuab lus.
Kuj Paub, yog vim li cas lub computer tiam thib ob zoo dua thawj tiam? 1) Transistors tau siv rau qhov chaw ntawm lub tshuab nqus tsev. 2) Ob tiam computers tau me me nyob rau hauv kev sib piv nrog cov thawj tiam computers . 3) Lawv tau nrawm dua piv nrog cov thawj tiam computers . 4) Lawv tsim hluav taws xob tsawg thiab tsis tshua muaj kev ua tsis tiav.
Ib yam li ntawd, cov lus programming twg pib los ntawm tiam thib ob?
Assembly los yog assembler lus yog tus tiam thib ob ntawm computer lus . Los ntawm lig 1950s, qhov no lus tau los ua neeg nyiam. Kev sib dhos lus muaj cov tsiaj ntawv ntawm cov tsiaj ntawv. Qhov no ua rau programming yooj yim dua li sim ua qhov kev pab cuam ntawm xoom thiab ib qho.
Qhov twg yog thawj tiam lus?
Ua ntej - tiam lus . Ua ntej - tiam lus yog lub khoos phis tawj qis tshaj plaws lus . Cov ntaub ntawv raug xa mus rau lub computer los ntawm programmer raws li cov lus qhia binary. Cov lus qhia binary yog qhov sib npaug ntawm cov teeb liab qhib / tawm siv los ntawm khoos phis tawj los ua haujlwm.
Pom zoo:
Dab tsi yog cov khoom siv loj tshaj plaws ntawm thawj thiab thib ob tiam ntawm lub tshuab computer?
Thawj tiam (1940-1956) siv lub tshuab nqus tsev vacuum, thiab tiam thib peb (1964-1971) siv cov khoom sib txuas (tab sis tsis yog microprocessors). Mainframes ntawm cov tiam thib ob no siv cov ntawv xuas nrig ntaus rau kev tawm tswv yim thiab tawm thiab 9-khiav 1/2 "magnetic daim kab xev drives rau kev khaws cia, thiab kab tshuab luam ntawv rau cov ntawv luam tawm
Dab tsi yog qhov sib txawv ntawm cov ntaub ntawv thib ob thiab thawj zaug?
Cov ntaub ntawv thib ob yog cov ntaub ntawv uas twb muaj lawm, sau los ntawm cov chaw soj ntsuam thiab cov koom haum ua ntej. Cov ntaub ntawv tseem ceeb yog cov ntaub ntawv ntawm lub sijhawm tiag tiag thaum cov ntaub ntawv thib ob yog ib qho uas cuam tshuam rau yav dhau los. Cov ntaub ntawv tseem ceeb suav nrog kev tshawb fawb, kev soj ntsuam, kev sim, daim ntawv nug, kev xam phaj tus kheej, thiab lwm yam
Dab tsi yog qhov sib txawv ntawm cov txheej txheem programming thiab modular programming?
Structured programming yog qib qis ntawm coding hauv txoj kev ntse, thiab kev ua haujlwm modular yog qib siab dua. Modular programming yog hais txog kev sib cais qhov chaw ntawm cov kev pab cuam rau hauv kev ywj pheej thiab hloov pauv tau, los txhim kho kev sim, kev tswj xyuas, kev sib cais ntawm kev txhawj xeeb thiab rov siv dua
Dab tsi yog qhov zoo sib xws thiab qhov txawv ntawm relays thiab PLC yog dab tsi?
Relays yog electro-mechanical keyboards uas muaj coil thiab ob hom kev sib cuag uas tsis yog NO & NC. Tab sis Programmable Logic Controller, PLC yog lub khoos phis tawj me uas tuaj yeem txiav txim siab raws li qhov kev zov me nyuam thiab nws cov tswv yim & tso tawm
Dab tsi yog qhov sib txawv ntawm qhov ntsuas qhov ntsuas thiab qhov ntsuas thib ob?
Primary index: nyob rau hauv ib tug sequentially order file, qhov Performance index uas nws search key qhia cov sequential order ntawm cov ntaub ntawv. Kuj hu ua clustering index. Secondary index: ib qho Performance index uas nws qhov tseem ceeb tshawb nrhiav qhia qhov kev txiav txim sib txawv ntawm qhov kev txiav txim ntawm cov ntaub ntawv. Kuj hu ua non-clustering index