Since my olympus stylus memory card does not fit my computer slot?

should i buy a kodak 70 in 1 card reader? is this what a card reader is used for? the camera memory card is small and my computer slot is too big. and why is it called '70 in 1 card reader? does it hav 70 different slots?? lol. i don't know that is why i am asking. hav a great sunday. thanks carmen