This is not altogether strait forward to answer. It depends on which country's history you look at (and what you define as a computer) but certainly the very first computer that could be programmed was (a mechanical computer) invented by Charles Baggage (the difference engine) in In 1822.
Then in 1936, during WW2, Alan Turing described the "Turing" machine, a design which all electronic computers have followed since. The A Mark 2 Colossus computer was the worlds first semi programmable computer and was invented in Blechley Park during WW2 to break the German Enigma codes.
After the war the US was in a better financial position to develop commercial version of computers and began to patent designs (the British did not pursue commercial patents like the US and hence lost out).
The history of the US development of computers can be seen in the related link I will make below.
I think it was the apple computer.
Intel 4004
1951 was when the first computer was used
The name of the first micro computer is a micro computer
The first digital computer was called ENIAC
The First portable computer was Osborn-1
The country that was the first to use the computer was Germany. This computer was a binary calculator and was used to complete mathematical computations. The first computer used for breaking codes was used in England.
The first computer used for calculation is highly dependent on what you consider a computer to be. In many views, the first computer used for calculations was the abacus which dates back to 2400 BC.
Based on the Unix Operating System.
PARAM PADMA is the name of the first super computer.
mr. computer
The first electronic computer was called the ENIAC (Electronic Numerical Integrator and Computer).