Máy tính tài chính : Nen mua loai TI BA II Plus theo duong link ben duoi voi gia 860K.
http://www.texas-vernier.com/index.php?language=VN&module=product&content=add_product&action=view&pid=91
http://www.texas-vernier.com/index.php?language=VN&module=product&content=add_product&action=view&pid=91