He improved upon the design by adding Vaccum Tubes
As , When the time ENIAC was built semiconductors were not invented so it used vaccum tubes as switching device, and it used around 16000 tubes so it had to be placed in a room of around 800 sq.ft,this was one of the prblm and another was that it could not store instructions.
The ENIAC has 17,468 vacuum tubes. These tubes were the first technology that made computers function. Modern computers do not use this technology.
ENIAC,EDSAC,EDVAC,UNIVAC(I &II) and MARKS1
ENIAC
First Generation computers were made out Vaccum Tubes. They required alot of Electricity and emitted a lot of heat. Vaccum Tubes were also needed to be replaced when it becomes really hot. So Vaccum Tubes were not very efficient or easy to handle.
a vaccum tube is really really niceeee
vaccum tubes and valves.
Eniac didn't have any transistors. It was built with 17,468 vacuum tubes, 7,200 crystal diodes, and a whole host of other components. But no transistors. The first transistor was created in November, 1947, almost two years after Eniac was completed.
it used 1800 vacuum tubes
The UNIVAC and ENIAC computers are examples of first-generation computing devices. Computers employing vacuum tubes are known as first-generation computers. THESE WOULD OCCUPY A 1800 SQUARE FEET. IT WOULD CONTAIN 18000 VACCUM TUBES AND CONSUME A LARGE POWER
It was difficult to change directions and the vacuum tubes always burned out