Contains instruction in pc ideas, data programs, networking, working methods, pc hardware, the Internet, software functions, assist desk ideas and problem fixing, and ideas of customer service. The Control Information Corporation (CDC) 6600 performs up to three million instructions per second —three times sooner than that of its closest competitor, the IBM 7030 supercomputer. The 6600 retained the excellence of being the fastest pc on the earth till surpassed by its successor, the CDC 7600, in 1968. A part of the speed came from the pc´s design, which used 10 small computer systems, often called peripheral processing units, to dump the workload from the central processor.