For example, IBM PC this product is low-grade product. Bad point is the keyboard, which is close to the keys of a calculator, but portable for use in print is not easy because of the amount of space between the push button on each keyboard button too far from each other, and there is active buttons 62 because IBM has cut the keys off the numeric section. While more expensive when compared with the other computer. Make this version of the IBM PC was unable to penetrate the family.