1951 (UNIVAC): The UNIVAC, short for Universal Automatic Computer, was released in 1951. It was invented by J. Presper Eckert and John Mauchly. The computer is an electrical computer that contains thousands vacuums tubes that uses various punch cards and switched to input data. It uses punch cards for outputting data.
1957 (UNIVAC ii): The UNIVAC II is the second model in the UNIVAC line. This computer is twice the speed as the first one. The computer was the only computer that was completely self checked. It could read, write, and compute simultaneous without extra equipment. Data that has been recorded on a magnetic tape is fed from the UNIVAC II to the magnetic core of the computer. This is where it was held for instant access. It then goes to the data processor where the computing happens. The UNIVAc II has several utilities. It had a unityper II, which was a typewriter like thing that was hooked up to the computer so you could type and the computer would save it. It also had a verifier which checked the accuracy of tapes. Also, there is a card-to-tape converter which will take information from a punched card system and turn it into a tape system. There is a uniprinter which types the results of the UNIVAC II. There is also a high speed printer. Which prints data from tapes. There is also a tape-to-card converter because some applications need a punch card system.
1964: Douglas Engelbart invents a prototype of the modern computer, with a mouse and a graphical user interface (GUI). This marks the evolution of the computer from a specialized machine for scientists and mathematicians to technology that the public can use.