Amaya Toman A cikin shirinmu na yau kan muhimman abubuwan da suka faru a fagen fasaha, za mu sake tunawa da ranar tunawa da kamfanin Apple bayan wani lokaci. Yau ita ce ranar tunawa da gabatar da Powebook 100. Amma kuma za mu yi magana ne game da kwan fitilar Thomas A. Edison ko alamar ƙwaƙwalwar ajiyar ferrite.
Zai iya zama sha'awar ku
Hasken fitilar Thomas A. Edison (1879)
A ranar 21 ga Oktoba, 1879, Thomas A. Edison ya kammala watanni 14 na gwada kwan fitilar gwajinsa. Kodayake kwan fitila na gwaji na farko ya dau tsawon sa'o'i 13,5 kacal, ya kasance babban nasara a lokacin. Edison ya inganta fasaha mai shekaru 50 don samar da kwararan fitila masu aminci da tattalin arziki.
Gidan hoton hoto
Patent don ƙwaƙwalwar ferrite (1949)
A ranar 21 ga Oktoba, 1949, masanin kimiyyar lissafi dan kasar Sin An Wang ya ba da izinin abin da ake kira ƙwaƙwalwar ajiyar ferrite. Tunanin farko na amfani da kayan ferromagnetic don fahimtar abubuwan tunawa an haife shi a cikin 1945 a cikin tunanin J. Presper Eckert da Jeffrey Chuan Chu na Makarantar Moore ta Jami'ar Pennsylvania. Dangane da ikon mallakar Wang, duk da haka, ba abin tunawa ba ne kamar yadda muka sani a yau, amma nau'in da'ira ne da ke amfani da nau'ikan ferrite guda biyu kowane bit a lokacin.
Littafin wutar lantarki na Apple (1991)
A ranar 21 ga Oktoba, 1991, Apple ya gabatar da kwamfutar tafi-da-gidanka mai ɗaukar hoto mai suna Powerbook 100. An gabatar da kwamfutar a wurin baje kolin kwamfuta na COMDEX da ke Las Vegas, kuma ya kamata ta wakilci ƙananan ƙirar ƙirar uku na farko da aka saki Apple PowerBooks a lokaci guda. Littafin rubutu na Powerbook 100 an sanye shi da na'ura mai sarrafa 16MHz Motorola 68000 kuma an sanye shi da na'ura mai ɗaukar hoto na monochrome mai girman inci tara. The PowerBook-ko ma dai dukan samfurin line-mu mamaki samu da kyau daga masu amfani, samun Apple fiye da $XNUMX biliyan a farkon shekararsa.
