First commercial computer turns 50

The UNIVAC I (Universal Automatic Computer) Thursday celebrated its 50th birthday. On June 14, 1951, UNIVAC I made its debut at the US Census Bureau, the first enterprise customer in an industry that has grown to become a multibillion dollar market. It was shown off back then during a commemoration ceremony to celebrate "the fact that it was installed and ready to go," said Steve Holzman, a Unisys spokesperson.

For a hefty price tag of $US1.6 million, the Census Bureau invested in the computer, which could hold a maximum 12MB of data, had a processing speed of 0.008 MHz and required 952-cubic feet of space to house, about the size of a sport utility vehicle. In comparison, Unisys' latest enterprise computer, the ES 7000, holds thousands of gigabytes of data, has 32 processors running at 900MHz and is no bigger than an average-sized refrigerator.

The original machine was so big, in fact, a door opened up to its core where engineers would often install a desk and chair inside to enjoy the computer's air-conditioned centre, Unisys said.

Despite its size, the machine soon became a sought-after device for computing thousands of equations per second. One of its earliest customers, General Electric used the UNIVAC I to do its payroll. In its first few years in production, 46 customers from the US Army to DuPont employed the lumbering giant to run their own systems.

UNIVAC's creators also built the ENIAC (Electrical Numerical Integrator And Calculator) in the late 1940s as the predecessor to the UNIVAC I. The ENIAC was developed by John Mauchly and John Presper Eckert for a US military project known as Project PX to calculate the trajectory of artillery shells during the second World War. The machine they built was twice as large and possessed half the calculating speed of the UNIVAC, Unisys said.

"There were a lot of electromechanical technologies that did faster computations than you could do with a piece of paper," Holzman said of the time. "The ENIAC was the first fully electronic machine."

But ENIAC's creators quickly improved the performance of their first machine and by 1951 created a computer that would be sold to corporate customers besides the US government. Over the years, through a series of corporate buyouts and acquisitions, the UNIVAC found its home with Unisys in 1986.

The company now has a lot to reminisce about. Unisys Thursday issued an "apology" for introducing the UNIVAC to the enterprise market. The company said it was sorry for "giving SPAM a bad name," jokingly referring to the meat product whose name came to also mean unsolicited commercial e-mail. Unisys further offered a tongue-in-cheek apology for paving the way for the dot-com bubble and its subsequent burst and eliminating the concept of regular working hours.

But what the machine might be best remembered for, the company said, is the first computation that gave it widespread public attention. In 1952 the UNIVAC correctly predicted that Dwight D. Eisenhower would be victorious in the US presidential election. Guardedly, CBS' evening news show chose not to air the UNIVAC prediction, instead waiting for an official count. Soon after the polls closed, CBS anchor Walter Cronkite acknowledged its accuracy.

If only reporters had shared a similar scepticism for early predictions in the last US presidential election, George W. Bush ... no, Al Gore ... no, George W. Bush could have been more comfortable celebrating an early victory.

Join the newsletter!


Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Matt Berger

PC World
Show Comments

Father’s Day Gift Guide

Brand Post

Most Popular Reviews

Latest Articles


PCW Evaluation Team

Luke Hill


I need power and lots of it. As a Front End Web developer anything less just won’t cut it which is why the MSI GT75 is an outstanding laptop for me. It’s a sleek and futuristic looking, high quality, beast that has a touch of sci-fi flare about it.

Emily Tyson

MSI GE63 Raider

If you’re looking to invest in your next work horse laptop for work or home use, you can’t go wrong with the MSI GE63.

Laura Johnston

MSI GS65 Stealth Thin

If you can afford the price tag, it is well worth the money. It out performs any other laptop I have tried for gaming, and the transportable design and incredible display also make it ideal for work.

Andrew Teoh

Brother MFC-L9570CDW Multifunction Printer

Touch screen visibility and operation was great and easy to navigate. Each menu and sub-menu was in an understandable order and category

Louise Coady

Brother MFC-L9570CDW Multifunction Printer

The printer was convenient, produced clear and vibrant images and was very easy to use

Edwina Hargreaves

WD My Cloud Home

I would recommend this device for families and small businesses who want one safe place to store all their important digital content and a way to easily share it with friends, family, business partners, or customers.

Featured Content

Product Launch Showcase

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?