Amaya Toman Abubuwan da za mu tuna a cikin bayyani na yau na tarihin IT sun rabu daidai da shekaru ɗari - amma al'amura ne guda biyu mabanbanta. Na farko, za mu tuna da ranar tunawa da ranar haihuwar masanin kimiyya, mathematician kuma masanin ilimin lissafi Derrick Lehmer, a kashi na biyu na labarin za mu yi magana game da bayyanar farko da kwayar cuta a cikin wayoyin hannu.
Zai iya zama sha'awar ku
An haifi Derrick Lehmer (1905)
A ranar 23 ga Fabrairu, 1905, an haifi ɗaya daga cikin mashahuran malaman lissafi kuma firaministan masu ilimin lissafi, Derrick Lehmer, a Berkeley, California. A cikin 1980s, Lehmer ya inganta akan aikin Édouard Lucas kuma ya ƙirƙira gwajin Lucas-Lehmer don Mersenne primes. Lehmer ya zama marubucin ayyuka da rubutu da nazari da nazari da yawa kuma ya yi aiki a jami'o'i da dama. A cikin 22, Lehmer ya sami digiri na girmamawa daga Jami'ar Brown, bayan shekaru shida ya karantar a taron kasa da kasa kan kwamfutoci da lissafi a Jami'ar Stanford. Har wala yau, ana ɗaukansa a matsayin majagaba wajen magance matsaloli a ka’idar lamba da kuma wasu fannoni da dama. Ya mutu a ranar 1991 ga Mayu, XNUMX a ƙasarsa ta Berkeley.
Gidan hoton hoto
Kwayar cutar wayar hannu ta farko (2005)
A ranar 23 ga Fabrairu, 2005, an gano kwayar cutar ta farko da ta kai hari kan wayoyin hannu. Ita wannan cuta da aka ambata ana kiranta Cabir kuma tsutsotsi ce ta cutar da wayoyin hannu da tsarin aiki na Symbian - misali, wayoyin hannu daga Nokia, Motorola, Sony-Ericsson, Siemens, Samsung, Panasonic, Sendo, Sanyo, Fujitsu, BenQ, Psion. ko Arima. Kwayar cutar ta bayyana kanta ta hanyar nuna saƙo mai ɗauke da kalmar "Caribe" akan allon wayar da ta kamu da cutar. Hakanan kwayar cutar ta iya yaduwa ta siginar Bluetooth, galibi a cikin nau'in fayil mai suna size.sis, wanda aka sanya a cikin babban fayil ɗin System/apps/caribe. A lokacin, mafita ɗaya kawai ita ce ziyarar sabis na musamman.
