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UNIVAC
UNIVAC, or Universal Automatic Computer, was another successful invention of
John Mauchly and Presper Eckert in 1951 that could handle both numeric and textual
information.
UNIVAC
The UNIVAC had 5,200 vacuum tubes.
Features of First Generation Computers
• Huge in size.
• Very expensive.
• Made up of vacuum tubes.
Vacuum tube
Second Generation (1950s)
After 1955, the use of transistors and magnetic tapes
changed the image of the electronic computer.
During this period, the major computer manufacturers
began to offer a range of accessories, such as: Page
Printers, Cathode Ray-Tube displays, Card Feeders, etc. Magnetic tape
Features of Second Generation Computers
• Made up of transistors.
• Magnetic tapes were used to store data.
• Small in size and less expensive than the first generation computer.
• Faster and reliable.
Transistor
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Evolution of Computers

