kiufupi tu, kompyuta hutumia memory cell (chumba) ku tunza binary digits 0 na 1,
kila cell huweza kutunza (address) digit moja tu at a time, 0 au 1,
ivyo basi total number of ways a cell can store a bit = 2 ( 0 na 1 makes 2 ) ,
hapa ni zile sample space, 0 au 1 ambayo huunda 2
kama una 2 cells , ina maana
00 , cell1 inatunza 0 , cell2 inatunza 0. AU
01 , cell1 inatunza 0 , cell2 inatunza 1. AU
10 , cell1 inatunza 1 , cell2 inatunza 0. AU
11 , cell1 inatunza 1, cell2 inatunza 1
izo ndo possible events za mpangilio, ambazo zipo 4
utaona kwamba kama una 3cells mpangilio ni huu
000,001,010,011,100,101,110,111
mpangilio ni 8.
kama una 4cells , mpangilio ni 16
kama una n-cells , mpangilio ni '2 raise n'
samaani kwa kukuwekea hesabu
mpangilio ndio mpango mzima wa kupima memory storage , ivyo basi haiwezi dondokea nje ya hii, 2,4,8,16,32,64,etc