Tipuri De Sisteme De Calcul Si De Comunicatii

Tipuri De Sisteme De Calcul Si De Comunicatii

Recapitulare rezolvai urmtorul rebus: Rezolvai urmtorul rebus: http://www.informaticainscoli.ro/doku.php?id=wiki:aplica http://www.informaticainscoli.ro/doku.php?id=wiki:aplicatii.1.0 TIPURI DE SISTEME DE CALCUL SI DE COMUNICATII Sisteme de calcul - istoric Abac:

https://www.google.ro/search? biw=1366&bih=657&tbm=isch&sa=1&ei=prWsW7QZztbAAuD8vKgI&q=abac&oq=abac&gs_l=img.3..0j0i67k1l2j0l7.132167.133046.0.133477.4.4.0.0.0.0.131.425.1j3.4.0....0...1c.1.64.img..0.4.423....0. GBqvaGpWICA#imgrc=mT0QN8pwMt5wpM: Sisteme de calcul - istoric Maina de adunat Blaise Pascal(1642) Masina consta din sase cilindri ce aveau reprezentate cifrele 0,1,...,9 pe cte o band. La fiecare rotatie cu 1/10 din lungimea cercului corespunztor, se schimba cifra iar fiecare 10 atins de un cilindru determina trecerea automat, pe cilindrul urmtor,

a unei unitti de ordin superior. Astfel, suma a dou numere rezulta n urma rotatiilor succesive fcute pentru primul si al doilea numr Cum functioneaza? https://www.youtube.com/watch?v=3h71HAJWnVU https://www.antic-shop.ro/antichitate/masini-de-scris/masina-de-calculat-aritmometru Sisteme de calcul - istoric Gotfried von Leibnitz Leibnitz a construit masini de adunat si nmultit (1694, 1704) inventnd un cilindru suplimentar care permitea repetarea adunrilor n vederea efecturii unei nmultiri (antrenorul).

Dispozitivele de calcul descrise de el pentru efectuarea celor patru operatii aritmetice au aplicatii si astzi. Cum funcioneaz? https://www.youtube.com/watch?v=OacMkA38QiQ https://www.google.ro/search? tbm=isch&q=leibniz+calculator&chips=q:leibniz+calculator,online_chips:gottfried,online_chips:m %C3%A1quina&sa=X&ved=0ahUKEwiSqrTmk93dAhVKDuwKHYbXBUAQ4lYIJigA&biw=1366&bih=657& dpr=1#imgrc=FFxVpPNY9z1EnM: Sisteme de calcul - istoric Charles Babbage

Charles Babbage a proiectat, ntre 1834 si 1854, o masin care, folosind rotite de calcul zecimal, urma s execute o adunare ntr-o secund dar care n-a fost, din pcate, complet realizat. Munca lui Babbage a fost ncurajat de ideile inovatoare ale Adei Byron, numele celor doi rmnnd de referint n pionieratul informaticii prin intuirea unor principii general valabile n informatic, cum ar fi separarea memoriei si unittii de executie n construirea unui calculator sau posibilitatea utilizrii acestuia pentru rezolvarea unor probleme complexe Exemplu:

https://www.youtube.com/watch?v=qctHEGKr9Zs https://www.google.ro/search?q=charles+babbage+calculator&tbm=isch&source=iu&ictx=1&fir=w2LCOmFe0A6xCM%253A %252CQ_wZNUZ7CTUUhM%252C_&usg=AI4_kS2A5CET8jggm0vW25805I4kUXrUw&sa=X&ved=2ahUKEwiG58afld3dAhXI1qQKHVuEA7kQ9QEwC3oECAQQBg#imgdii=_uFffFiQQ5e7mM:&im grc=w2LCOmFe0A6xCM: Sisteme de calcul - istoric Primul calculator electronic ENIAC Primul calculator electronic a fost construit n 1943 n Statele Unite (Philadelphia) si s-a numit ENIAC. Acesta

folosea procedeele de calcul aplicate la calculatoarele mecanice dar, datorit pieselor electronice, avea o vitez mai mare: 32.000 de operatii aritmetice pe secund. Era de dimensiuni mari, componentele sale principale fiind o memorie pentru date, una pentru instructiuni si o unitate de comand pentru executia instructiunilor. Enumerarea caracteristicilor sale fizice este foarte sugestiv pentru a crea o imagine asupra primelor tipuri de calculatoare: el continea 18.000 de tuburi electronice, 7.500 de relee, 7.000.000 de rezistente si ocupa 145m2 cntrind 30t.

https://www.google.ro/search?q=eniac&tbm=isch&tbs=rimg:CZu6IQQ0cv5IjiYeAjXY5WSx5b2Jwn0koQjzaBdLwWxFMfpUwkkkHotCBA4i5H431VyqYY9H9pHeVeA7HHx7o_17yoSCZh4CNdjlZLHEWeWRD9a9dRwKhIJlvYnCfSShCMRA490TVtIeU4qEgnNoF0vBbEUxxFvEixnB8UUeioSCelTCSSQei0IEU7I0WV7nqXLKhIJEDi LkfjfVXIR1bDJ3t46tFEqEgmphj0f2kd5VxF9G1OempR2qSoSCYDscfHuj7_1vEZ0TgdgTAzMa&tbo=u&sa=X&ved=2ahUKEwj92s6UhdvdAhXCZlAKHU NHB4QQ9C96BAgBEBg&biw=1366&bih=657&dpr=1#imgrc=mHgI12OVksdg_M: https://www.trecut.wellcome.ro/calculatorul-eniac Sisteme de calcul - istoric n 1947, John von Neumann stabilete principiile de baz pentru calculatoarele clasice arhitectura von Neumann MEMORIE

UNITATE ARITMETICO LOGIC UNITATE DE CONTROL INTRARE IEIRE

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