Amaya Toman Ntawm lwm yam, lub ntiaj teb ntawm kev siv tshuab kuj suav nrog kev lag luam tsheb. Hnub no yog thawj qhov kev sim tsav ntawm Ford Quadricycle, uas tau nrog ib qho teeb meem zoo kawg li. Ntxiv rau qhov kev caij tsheb no, niaj hnub no ib feem ntawm peb cov keeb kwm keeb kwm peb kuj tseem yuav nco txog patenting ntawm DRAM nco lossis caij tsheb ciav hlau nthuav dav.
Nws yuav yog txaus siab rau koj
Ford Quadricycle xeem tsav (1869)
Thaum Lub Rau Hli 4, 1896, Henry Ford tau txiav txim siab los sim tsav nws lub tsheb ua tiav tshiab uas siv roj av hu ua Ford Quadricycle. Thaum xub thawj, nws zoo li lub qhov rooj ntawm qhov chaw nres tsheb, uas tig mus rau qhov dav tsis txaus, yuav tiv thaiv nws qhov kev ua tiav thawj zaug. Hmoov zoo, qhov teeb meem no tau daws nrog kev pab ntawm xob laim-ceev improvised kev hloov kho. Cov rooj vag tau nthuav dav thiab Ford muaj peev xwm ua tiav lawv cov khoom tshiab. Ford Quadricycle muaj ob qhov sib txawv, tab sis tsis muaj kev thim rov qab.
Cov duab thaij duab
DRAM patent (1968)
Thaum Lub Rau Hli 4, 1968, Dr. Robert Dennard los ntawm IBM TJ Watson Research Center tau patented ib hom DRAM (Dynamic Random Access Memory) lub computer nco. DRAM khaws cov ntaub ntawv nyob rau hauv daim ntawv ntawm tus nqi hluav taws xob nyob rau hauv lub capacitor, uas sib haum mus rau parasitic capacitance ntawm tus tswj electrode (Gate) ntawm MOSFET hom transistor. Tsis ntev tom qab Dennard's patent tau tso cai, Intel tau tsim nws txoj kev vam meej 1kb DRAM nti.
Lwm cov xwm txheej tsis yog hauv kev siv tshuab xwb
- Lub tsheb ciav hlau hu ua Transcontinental Express tuaj txog ntawm New York mus rau San Francisco tom qab taug kev ntawm 83 teev thiab 39 feeb. (1876)
- American astronomers Michael Brown thiab Chad Trujillo nrhiav tau lub cev trans-Neptunian hu ua Quaoar (2002)
