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During the times from 1930-1980, there were many great advances in computer technology. here are some of the highlights.
1972: The HP-35
1981: The IBM Personal Computer
The HP-35 was the world's first pocket electronic scientific calculator.
It was introduced in January 1972 by Hewlett-Packard.
Hewlett-Packard sold over 100,000 of the HP-35s the first year. They sold for $395.
The IBM was the first computer
that people could afford to buy as a personal computer.
Less than four months after IBM introduced the PC, Time Magazine named the computer "man of the year"
1944: The world's first programmable electronic computer - Colossus
During world war II, the Colossus computer was used by British code-breakers to help read encrypted German messages.
The computer was designed by an
Engineer known as Tommy Flowers,
who with the help from a few other
mathematicians and engineers, was
able to get the prototype working in
late 1943.
By the end of the war, 10 of these
computers were in use. However,
once the war was over, all models
and evidence of the colossus were
destroyed.
Although the people who worked with the Colossus computers were sworn to secrecy, word about the computer was leaked a few years after the war.
In 1994, a re-build project for the
colossus started and was
completed in 2007.
Many people worked with the computer - helping it analyze codes. they worked in Bletchley Park.
1960: The PDP1
The PDP-1 was an 18 bit machine created by Benjamin Curley.
The Digital Equipment Corporation introduced the PDP-1 as the world's first small interactive computer in November 1960 and it was soon sold for about $120,000.
1948: Manchester's 'Baby'
The computer was built and designed by a group of several people including J Presper Eckert, John Mauchly, John von Neumann, Herbert Goldstine and A. W. Burks
The EDVAC used 3,600 vacuum tubes and was used at the Ballistic Research Laboratories in Aberdeen, Maryland.
The machine was created in 1952 and was operational until December 1962.
1951: LEO computers
In 1948, engineers at Manchester University built the first general-purpose computer – the Manchester Small Scale Experimental Machine, which was nicknamed ‘Baby’.
It was the first computer with memory that could be used to store a program.
In 1951, the LEO I computer was operational and ran the world's first regular routine office computer job.
The company "LEO Computers Ltd" was formed in 1954
The LEO (Lyons Electronic Office) computer was created during October 1947 by a British company known as ‘J. Lyons & Company’ who were originally famous for its catering and teashops.
The directors of the company had a big interest in new office management techniques, such as the commercial development of computers.