The premiere of the IBM 5150 PC took place on August 12, 1981 and up to the present day the standard for the production of a personal computer. The whole idea was that engineers use publicly available parts instead of producing their own. IBM was equipped with an Intel 8088 processor with a speed of 4.77 MHz, ram memory with a capacity of 16 Kb, which could be expanded to 640 Kb. His monitor had a resolution of 80 x 24 characters. The data was stored on 5.25-inch diskettes with a capacity of 160 Kb, it operated under the control of the Microsoft operating system IBM PC-DOS v. 1.0. The cost of 2.5 thousand dollars. The machine was ready in just a year.