Originally posted by RedWine
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taghriban too hamin mayeha ke green_president goft. faghat kami roghanesh bishtar bayad bashe
khob, hala tozihe bishtar. adade 437 ra dar nazar begirid. in adad dar 3 khane neveshte mishe (yani 3 raghami hast). har khane bish az 9 nemitoone bashe, doroste? yani age ma be in adad, 4 ezafe konim, khooneye aval mishe 1, va yek 1 ham be khooneye mojaver montaghel mishe. yani natije mishe 441. ta injash ke moshkeli nabood, bood? be in system, migand dah-dahi. ya bar mabnaye 10. yani dar har khoone nemishe bish az 9 ra nevesht. khob hala age paye, bejaye 10, bashe 2, pas dar har khoone bish az 1 ra nemishe nevesht. pas mimoone chi? mimoone 0 va 1. pas ma 2 ra chetor neshoon midim? be shekle 1 va 0 (10). hala behesh 1 ezafe konid (yani mikhahim 3 ra neshoon bedim) khooneye aval ke 0 hast, ma behesh 1 ezafe konim, mishe 1 va chon kamtar az 2 hast, ghabele ghabool hast. pas ma "11" khahim dasht. "11" yani 3. hala age baz yek 1 behesh ezafe konid, chi mishe? khooneye aval "1" hast, pas 1+1 mishe 2. 2 az 2 kamtar nist pas nemishe 2 ra benevisid. pas khooneye aval mishe "0" va yek 1 montaghel mishe be khooneye 2. hala khooneye 2 chi hast? "1" hast. pas 1 + 1 baz mishe 2 ke baz nemishe too in khoone ham benevisim. pas khooneye 2 ham mishe "0" va baz yek 1 mire be khooneye 3. khooneye 3 toosh chizi nist. pas khooneye 3 mishe "1". khob pas chi daroomad? shod "100" ke hamoon 4 hast. be in list negah konid ke convert az mabnaye 10 be 2 hast:
mabnaye 2 <-> mabnaye 10
0 <-> 0
1 <-> 1
10 <-> 2
11 <-> 3
100 <-> 4
101 <-> 5
110 <-> 6
111 <-> 7
1000 <-> 8
1001 <-> 9
1010 <-> 10
1011 <-> 11
1100 <-> 12
1101 <-> 13
1110 <-> 14
1111 <-> 15
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khob nana jan barat begam ke midoni ke 1 +1 =2
to base 10 hala vaghti ke mikhahid base ro avaz konid mitonid to har basi benevisid masalan base 2 ke to computer be kar bordeh mishe ke behesh migan binary number.
hala chetor 2 mishe 10?
chon base ro be 2 mikhahim hesab konim
1+1 = 2
2/2 = 1 ba baghimandeh 0 pas vaghti ke minevishim mishe 10
hala age addad 3 bashe 3/2=1 ba baghimandeh 1 pas 3 mishe 11 dar base 2 ya hamon zabane computernana jan
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vaghti classe computer begiri yad migiri
hamid jan kheili khob bood hala soale man ineh ke IP number ro age dashteh bashi mitoni ba dashtan oon hameh mohtaviyate toye computeret ro mitonan bebinan?
pass che tori mitonim computeremon ro az in kar ha movazebat konim?
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fekr konam ghablesh in ra tozih dadam ke faghat ba dashtane IP, nemishe computeri ra hack kard. tozihe inke chetor yek computer hack mishe, kheyli toolanist va khodam ham ta be hal computere kesi dige ra hack nakardam. in ra goftam ke fekr nakonid alan man yek copy az hameye computer-haye shoma daram
vali doonestane yek seri chiza, komak mikone ke nagozarid digaran in kar ra bekonand. hala chetori movazebat konim?
avalandesh ke talash konid ziyad too internet sheytooni nakonid
yani ziyad be jahaee ke etminan nadarid, sarak nakeshid.
dige inke hatman az anti-virus va firewall estefadeh konid. age az windows xp va akharin SP oon (SP 2) estefadeh mikonid, khodesh default baraye shoma firewall ra active mikone. IE ham ta hadde bala secure mikone ke albatte hame hoselashoon az warning-ha sar mire va security ra paeen miyavarand.
age in kar-ha ra bekonid, shanse hack shodane shoma kam-tar mishe. va albatte be 0 nemirese
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