Strimer – tajhizotest, ki baroi nigoh doshtani informatsiya dar lentahoi magniti khizmat merasonad. Strimerho beshtar baroi nigoh doshtani nuskhahoi ehtiyotii informatsiyai dar vinchester mahfuzbuda istifoda burda meshavand. Informatsiya dar kassetahoi (katrij) lentahoi magniti sabt karda meshavad.
Strimerho dar istifodabari khele sodda buda, imkoniyati az hama arzontarini nigohdorii informatsiyaro faroham meovarand. Strimerho az hamdigar bo hajmashon (az 20 Mbayt to 40 Gbayt dar yak kasseta), tipi kassetahoyashon, inteyrfeysashon, surati sabt va khondanashon (az 100 Kbayt/s to 5 Mbayt/s), etimodnokii sabtashon va gayraho farq mekunand. Strimerho niz ba misli modemho dar du shakl dokhili va beruni istehsol karda meshavand.